November 4th, 2017

Going Grendel — Erik Cortina Converts AR15 to 6.5 Grendel

6.5 Grendel AccurateShooter.com cartridge Erik Cortina

Here’s an interesting project — using a second-hand barrel to upgrade an AR15. Our friend Erik Cortina decided to make his AR15, originally chambered in 6.8 SPC, into a 6.5 Grendel. Erik acquired a “pre-owned” 6.5-06 match barrel through our Shooters’ Forum. Erik inspected the barrel with a bore-scope and confirmed it was in good shape after the first few inches (past the chamber).

Erik Cortina barrel 6.5 Grendel

The 6.5-06 barrel had more than enough length, so he trimmed off the chamber end, then contoured the barrel to fit his AR15. This is a smart way to upgrade a gun without spending $350 or more on a brand new barrel.

In the first video, Erik explains the process of converting his 6.8 SPC AR15 into a 6.5 Grendel: “I take the upper completely apart and pull barrel off which will be used to take dimensions for new barrel. The new barrel will be turned from an old competition heavy barrel. All the barrel reaming will be done using JGS reamers. I will also use JGS reamers to make a seating and F/L sizing die.”

In the second video, Erik contours the “pre-owned” barrel to fit his AR. He uses an old bolt-action 6.5-06 competition barrel and cuts it to 17″ long and contours it to fit his AR-15. The barrel is turned down on a manual lathe to .750″ outside diameter for the majority of its length in order to fit the gas system barrel block that is made for a .750″ barrel. After contouring, the barrel will be threaded and chambered.

Permalink Gunsmithing, Tactical 4 Comments »
October 18th, 2017

Stop Neck Sizing! Why You Should Full-Length Size Your Brass

Full-Length Sizing Erik Cortina Neck Sizing Video

Why It’s Smart to Full-Length Size Your Brass

Commentary by Erik Cortina

Should You Full-Length Size Your Cartridge Brass?

Absolutely. Let Me Explain Why…

I have seen it time and time again, shooters on the line wrestling with their rifle trying to get the bolt closed while the wind is switching. They were too focused trying to get their bolt to close and getting their rifle settled back on the bags that they missed the wind switch. Bang… Eight! The straw that broke the camel’s back for me was at the 2017 Canadian Nationals. I was paired up with a young girl and she would try really hard to close the bolt on her rifle. The majority of the time she would get it to close, but often times she could not even get the round to chamber. She was focused on her rifle the entire time rather than on the conditions. When we completed our strings, she had five rounds that did not chamber our of 15! That is way too many!. I told her she needed to think about Full-length sizing with 0.002″ shoulder bump, or Controlled Full-length Sizing like I call it. I told her not to worry about losing accuracy. I told her that I full-length size all my rounds and asked if she noticed how smooth my bolt was and noticed my score. She said yes, they were both great!

Controlled Full-length Sizing Does NOT Harm Accuracy
I have found that Controlled Full-length Sizing does NOT hurt accuracy or shorten brass life. I find that I can focus much more on the conditions when I don’t have to think about chambering a round nor extracting it. It has become second nature. After firing, I keep my head welded to the stock, I open the bolt by placing my thumb on top of stock and rotating hand upwards. I reach in and retrieve spent case, place it back in ammo box, and pick up another loaded round and put in chamber. I verify conditions and when ready, I push the bolt in and close it with my index and middle finger.

With Controlled Full-length Sizing you “bump” the shoulder around .002″ for bolt guns.*
full length sizing
Image courtesy Sinclair International which carries a variety of Full-length dies.

Full-Length Sizing Erik Cortina Neck Sizing Video

Whidden Gunworks DiesWhidden Full-Length Sizing Dies
by AccurateShooter.com Editor
For proper Full-length sizing, you want a quality die that’s a very good match to your chamber. For our project rifles we usually turn to Whidden Gunworks which offers both bushing and non-bushing FL dies. And if you want the hot new option, check out Whidden’s patent-pending, click-adjustable FL-sizing die. This gives instant, precise control over shoulder bump. It works great.

*With gas guns, such as the AR10, you may want to increase shoulder bump to .003″ or more. With some benchrest cartridges, .0015″ bump may prove optimal. But .002″ is a good starting point.

Permalink Bullets, Brass, Ammo, Gear Review, Reloading 9 Comments »
October 7th, 2017

F-Open Nat’l Champ Talks Wind Reading and Cartridge Choice

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux
“A big congratulations to Bob Mead (1582-68X), who utterly destroyed the competition in tricky wind conditions to take the Gold.” — Jay Christopherson, 2017 F-Open Nationals Second Place.

In this 15-minute video, Team Lapua’s Erik Cortina interviews Robert Mead, the 2017 LR F-Open Champion. Robert (Bob) discusses his wind reading techniques with Erik, and the newly-crowned F-Open Champ explains how to set up a reliable wind zero. Bob also discusses cartridge choices in F-Open. He admits the straight .284 may be the tightest grouping 7mm cartridge, but he has used the 7mm RSAUM for a decade now. He believes the RSAUM may the best cartridge for 1,000 yards in 7mm, all things considered (grouping ability, ballistics): “To me it’s a light magnum, it’s capable of high speed, yet burns less powder than your regular magnums. [But] it’s a finicky cartridge — you’ve got to do a fair amount of load development.”

Every serious F-Class competitor should watch this video start to finish:

Credit Erik Cortina for video and the photo of Robert Mead with trophy above.

Permalink - Videos, Competition, Shooting Skills No Comments »
October 1st, 2017

Report from F-Class Nationals in Lodi, Wisconsin

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux
“A big congratulations to Bob Mead (1582-68X), who utterly destroyed the competition in tricky wind conditions to take the Gold.” — Jay Christopherson, F-Open Second Place.

The 2017 F-Class National Championships in Lodi, Wisconsin are now history. Hail the new Champions: Robert Mead, F-Open (1582-68X) and Ian Klemm, F-TR (1557-56X). Hosted by the Winnequah Gun Club, the Nationals drew about 75 F-Open shooters and 45 F-TR competitors, down from last year. In F-Open, Robert Mead shot brilliantly in tough conditions to finish 14 points ahead of his closest competitor, AccurateShooter.com’s System Administrator Jay Christopherson. Erik Cortina was just one point behind Jay, but Erik had the high X-Count for the match at 71X.

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux
Photos of Robert Mead and Ian Klemm courtesy Erik Cortina.

In F-TR, Ian Klemm also won by a margin of 14 points. This was an impressive win by Ian, given the challenging winds and weather. F-TR runner-up Todd Sanders also shot remarkably well, considering he is a relative newcomer to F-Class. Forum member KyBountyHunter observed: “Outstanding shooting this week gentlemen, in some of the most challenging conditions that I’ve seen. Congrats to all the winners. Ian — fantastic job taking First Place (well deserved) [and] special congrats to Todd. For this only being his second year in F-TR, he’s going to be force to be reckoned with for a long time!”.

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux

CLICK HERE for Match Results. Sorry — no equipment list yet.

Final Results for F-Open (TOP 10):
1. Robert Mead: 1582-68X HM
2. Jay Christopherson: 1568-59X HM
3. Erik Cortina: 1567-71X HM
4. John Myers: 1558-64X HM
5. Pat Scully: 1558-50X HM
6. Larry Bartholome: 1554-55X HM
7. Robert Sebold: 1554-41X HM
8. Steve Harp: 1553-58X HM
9. Jeff Hopkins: 1551-49X MA
10. Lou Murdica: 1550-46X MA

Final Results for F-T/R (TOP 10):
1. Ian Klemm: 1557-56X HM
2. Todd Sanders: 1543-43X MA
3. Brad Sauve: 1542-44X MA
4. Laura Perry: 1539-46X EX
5. Daniel Pohlabel: 1534-49X MA
6. Josh Moore: 1529-37X EX
7. Ken Klemm: 1528-38X MA
8. Bob Lorenz: 1525-47X EX
9. Raymond Weaver: 1522-36X HM
10. Alan Barnhart: 1521-31X HM

Strong Performances by Members of Team Lapua-Borden-Brux
Jay Christopherson posted: “A big congratulations to Bob Mead (1582-68X), who utterly destroyed the competition in tricky wind conditions to take the Gold. This was a great end to the 2017 competition season for me as I managed to hang on by the skin of my fingertips to win Silver at the 2017 F-Class US National Championships (F-Open).” For the record, Team Lapua-Borden-Brux ended up with all five present members of the team in the Top 8 of the Grand Aggregate.

Jay Christopherson (2nd, 1568-59X, Silver)
Erik Cortina (3rd, 1567-71X, Bronze)
Pat Scully (5th, 1558-50X)

Bob Sebold (7th, 1554-41X)
Steve Harp (8th, 1553-58X)

In team competition, Team Lapua-Borden Brux won the F-0pen Long Range Championship as well as the Mid-Range Championship. Jay told us: “That was some outstanding shooting by great team members. I’m really looking forward to the 2018 season.” Erik Cortina added: “So proud of our team. We conquered the 2017 LR National Championship as well as the Mid-Range National Championship. We could not have done it without our sponsors: Lapua, Borden Actions, and Brux Barrels.”

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux

In the F-TR Team Competition, mighty Team Sinclair triumphed yet again, winning its 10th Long Range National Championship. Team member Paul Phillips offered this interesting factoid: “This year we won with the original four members we had in 2004 plus Dan Pohlabel. It’s pretty awesome to be shooting with the same guys for 13 years! What a great run since 2004.” And those same four also all hail from Midland, Michigan (Midland County Sportsman’s Club). Team Sinclair still holds the 4-man Team 1000-yard National Record. Shown below, L to R, are team members: Daniel J. Pohlabel, Paul Phillips, Raymond Gross (Coach), Brad Sauve, and John Droelle.

Lodi Wisconsin F-Class National Championship Team Sinclair F-TR
All Team Sinclair members use identical hardware: McMillan XiT stock, Kelbly Panda action, Bartlein barrel, Nightforce scope, and Phoenix Precision bipod. All shoot Berger 200-20X bullets in Lapua brass.

The One that Got Away — Almost Matching F-Open 20-Shot Record
Erik Cortina shot a superb 200-16X during the competition (see electronic target scoring screen below). That was just one X shy of the current 200-17X National Record. Erik observed: “So close, yet so far. Almost matched the National Record of 200-17X but shot a ten on my very last shot. Everything felt good but luck was not on my side.”

Lodi Wisconsin F-Class National Championship Ian Klemm Robert Mead Jay Christopherson F-TR F-Open Borden Brux


File photo from Lodi at past F-Class Nationals.

Permalink Competition, News, Shooting Skills 1 Comment »
August 13th, 2017

$35,000 Pay-Out at Long Range Shooting Assn. Colorado Match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting matchIs long range shooting going to become a big-money sport like golf? Well the North American Long Range Shooting Association (NALRSA) thinks so. This relatively new organization is running a series of matches with huge money pay-outs for the top shooters.

The next NALRSA Match is happening next weekend (August 18-20) in Saguache, Colorado. Remarkably, the organizers will be offering $35,000 in total prize money, making this one of the richest rifle matches of the year:

“$35,000 dollar guaranteed payout in Colorado! Yes you read that right! As promised we are adding money into the Format 2 competition. We are going to guarantee $5,000 in each category #5 and #7. So get signed up! We have a vision at NALRSA to turn Long Range Shooting into a ‘real’ sporting event with BIG payouts just like so many other sporting events. Help us grow the sport and become a part of our exciting events!”

NALRSA Facebook Page | NALRSA Website at Long-Range-Shooting.com

This guy knows a thing or two about long range shooting.
NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match
Yep, that’s our buddy Erik Cortina (left) with the $6,250 First Prize check he received for finishing first in NALRSA’s Bandera (TX) match held in May.

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

NALRSA National long range shooting association colorado Saguache $35,000 shooting match

Permalink Competition, Tactical 2 Comments »
May 22nd, 2017

Accurate Cartridges — The .284 Shehane, an Improved .284 Win

F-Class Reloading .284 Winchester Win Shehane Accuracy

If you look at that 5-round group you might think it was shot with a 6 PPC or maybe a 6mmBR. But no, this was done with heavy 180gr Berger Hybrid bullets and the .284 Shehane, an improved version of the .284 Winchester. In fact, this impressive sub-quarter MOA group was shot while fire-forming with a very well-worn barrel!

Gun builder Ryan Pierce of Piercision Rifles explains:

Here’s a 5-shot 0.191″ group at 100 yards with my .284 Shehane fireforming loads. This barrel has 2200 rounds through it. It had 2000 as a straight .284 Win and then I set it back to .284 Shehane to form brass with. This was the first five rounds through it after I cleaned it after the last match. [The load was] 180 Hybrids with 54.0 grains of H4831 SC.

Ya, I figured why not I had some old barrels laying around so I just chopped 2″ off the back and 1″ off the front and chambered it up as a Shehane. Had 1000 pieces to fireform and didn’t want to do all that on a brand new barrel.

My fireform loads are going 2765 FPS. I have a 29″ barrel also though since it’s a setback. Once you get it formed I would push it faster than that or I wouldn’t even bother with the Shehane. My old straight .284 load at 2890 fps had ES spread in single digits for 10 shots. I figured if I get it up to 2935-2950 fps that will be a point or two saved in a several day match.

.284 Winchester Shehane Reamer Print PT&G

Fellow .284 Shehane shooter Erik Cortina notes that the .284 Shehane has a velocity edge over the straight .284 Win because it holds more powder: “The Shehane has more capacity than the .284 Winchester. Ryan is using 54.0 grains simply as a fire-forming load. Typical load for a Shehane is around 57.0 grains of Hodgdon H4831 SC.” By blowing the sidewalls out 0.010″, the .284 Shehane picks up about 3.3 grains of extra case capacity. That enhancement makes a BIG difference. The extra boiler room is enough to drive the 180s at 2900-2950 fps with H4831sc, with long barrels.

Permalink Bullets, Brass, Ammo, Competition, Reloading No Comments »
May 19th, 2017

Make Your Own Threaded Case for Measuring Length to Lands

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

In this video, Forum member Erik Cortina shows how to create a custom modified case for use with the Hornady Lock-N-Load Overall Length Gauge (formerly the Stoney Point Tool). While Hornady sells modified cases for many standard cartridges, if you shoot a wildcat such as the 6mm Dasher or .284 Shehane, you’ll need to create a custom modified case*. And even if you shoot a standard cartridge such as the .308 Winchester you can get more consistent measurements if you make a custom modified case from a piece of brass fired in your chamber.

The process is straight-forward. Take a piece of brass fired in your chamber and full-length size it (with about .002″ shoulder bump). Then you need to drill out the primer pocket. Erik uses a mini-lathe for the operation, but this general process can be done with a drill press or other tools. Erik shows how to do this with a 0.290″ HSS (High Speed Steel) drill bit on a mini-lathe. After drilling the hole comes the tricky part — you need to tap the case with the precise 5/16″ x 36 threads per inch (tpi) right-hand thread that matches the male thread on the O.A.L. Gauge. This 5/16″ x 36 tpi tap is pretty uncommon, but you can order it from Amazon.com if you can’t source it locally.

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

If you use a mini-lathe, Erik suggests loosening the tailstock slightly, so it can float while cutting the threads. Erik also says: “Make sure you get the tap on pretty tight — it’s going to want to spin.” Erik turns the case at about 100 rpm when tapping the threads. Once the case and tap are rigged, the actual tapping process (see video at 6:00) takes only a few seconds. While the mini-lathe makes the tapping process go more quickly, the threading can also be done with other systems.

TIP: Don’t just make one modified case, make three. That gives you one for your range kit, one for your home reloading bench, plus a spare (since you WILL eventually lose or misplace one).


Here’s the Stuff You Need

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

5/16″-36 TPI Threading Tap
The required thread is somewhat uncommon. You need a 5/16″ – 36 tpi Right Hand Thread Tap. If you can’t find it locally, Amazon.com carries the correct tap. Erik notes: “The 5/16-36 tpi tap is not a common size. I think Hornady did this on purpose to make it more difficult for the average guy to make his own modified cases.”

0.290″ Drill Bit
Erik uses an 0.290″ HSS “L” drill bit. (This “L” Letter Gauge code designates a 0.290″ diameter bit). A close metric equivalent would be 7.3 mm (0.286″). Erik says: “A 9/32″ drill will also work but it will be harder to run the tap in since the hole will be .281″ instead of .290″ with the Letter Gauge L bit.”

Tips for Using O.A.L. Gauge with Modified Case
We’ve noticed that many folks have trouble getting reliable, consistent results when they first start using the Hornady O.A.L. Gauge (formerly the Stoney Point Tool). We’ve found this is usually because they don’t seat the modified case properly and because they don’t use a gentle, consistent method of advancing the bullet until it just kisses the lands.

Here is our suggested procedure for use the O.A.L. Gauge. Following this method we can typically make three of four measurements (with the same bullet), all within .001″ to .0015″. (Yes, we always measure multiple times.)

1. Clean your chamber so there is no build-up of carbon, debris, or lube. Pay particular attention to the shoulder area.

2. Screw the modified case on to the O.A.L. Gauge. Make sure it is seated firmly (and doesn’t spin loose). Note, you may have to re-tighten the modified case after insertion in the chamber.

3. Place your selected bullet so that the ogive (max bullet diameter) is behind the case mouth. This prevents the bullet from “snagging” as you insert the tool in the action.

4. Insert the O.A.L. Gauge into your chamber smoothly. Push a little until you feel resistance. IMPORTANT — You need to ensure that the shoulder of the modified case is seated firmly against the front of your chamber. You may have to wiggle and twist the tool slightly. If you do not have the modified case seated all the way in, you will NOT get a valid measurement.

5. Advance the bullet slowly. (NOTE: This is the most important aspect for consistency!). Push the rod of the O.A.L. tool gently towards the chamber. DON’T shove it hard! Easy does it. Stop when you feel resistance.

6. IMPORTANT. After gently pushing on the rod, give the end of the rod a couple forward taps with your finger. If your bullet was slightly skewed, it may have stopped too far back. Adding a couple extra taps will fix that. If the bullet moves after the taps, then again push gently on the rod. NOT too much! You just want to push the bullet until it just “kisses” the lands and then stops. Do NOT jam the bullet into the rifling. If you do that you will never get consistent results from one measurement to the next.

* For a $15.00 fee, Hornady will make a custom modified case for you if you send two fired pieces of brass. Send two fired cases and $15.00 check to: Hornady Manufacturing, Attn: Modified Cases, 108 S. Apollo St., Alda, NE 68810. More Info HERE.

Permalink - Videos, Reloading, Tech Tip 1 Comment »
January 3rd, 2017

Cortina’s Corner — Video Review of Forster Co-Ax Reloading Press

Co-ax Forster press

Forum member Erik Cortina has produced a series of YouTube videos about reloading hardware and precision hand-loading. This week we feature Erik’s video review of the Forster Co-Ax® reloading press. The Co-Ax is unique in both design and operation. It features dual guide rods and a central handle. You don’t screw in dies — you slide the die lock ring into a slot. This allows dies to float during operation.

Erik does a good job of demonstrating the Co-Ax’s unique features. At 1:00 he shows how to slide the dies into the press. It’s slick and easy. At the two-minute mark, Erik shows how sliding jaws clasp the case rim (rather than a conventional shell-holder). The jaws close as the ram is raised, then open as it is lowered. This makes it easy to place and remove your cases.

At the 5:20 mark, Erik shows how spent primers run straight down into a capture cup. This smart system helps keep your press and bench area clean of primer debris and residues.

While many Co-Ax users prime their cases by hand, the Co-Ax can prime cases very reliably. The priming station is on top of the press. Erik demonstrates the priming operation starting at 4:20.

Co-ax Forster press

Smart Accessories for the Co-Ax from Inline Fabrications
Lapua’s Kevin Thomas also owns a Co-Ax press, which he has hot-rodded with accessories from Inline Fabrications. Kevin tells us: “Check out the add-ons available from Inline Fabrications for the Co-Ax. I recently picked up a riser mount and a set of linkages for mine and love the results. The linkages are curved. When you replace the original straight links with these, the work area opens up substantially and the the press becomes much easier to feed.” CLICK HERE for Co-Ax Accessories.

Inline Fabrications Forster Co-Ax Accessories

Forster Co-Ax Curved Side Linkage
(For Better Access)

CLICK HERE

Forster Co-Ax Ultramount
(Riser plus Bin Support)

CLICK HERE

Co-Ax Roller Lever (Short)

CLICK HERE

Dual LED Lighting Kit for Co-Ax

CLICK HERE

Permalink - Videos, Reloading 2 Comments »
November 19th, 2016

Cortina’s Corner: Using the Giraud Power Trimmer

Trimming and chamfering brass are tasks hand-loaders grow to hate. Those chores are time-consuming and tiresome. Thankfully there are faster, better alternatives to manual trimming/chamfering. In this article, Forum member Erik Cortina shows how to use the Giraud tool which trims and chamfers in one operation. Erik has his own YouTube Channel dedicated to precision reloading and accurizing. Here we feature Erik’s video about the “mother of all brass trimmers”, the Giraud powered case trimmer. Erik says: “If you do volume reloading… this is the only trimmer to get. It not only trims to length but it also chamfers your case mouth inside and out.” In his video, Erik offers some very clever and useful tips that will help you get the most from your Giraud.

This is a manufacturer’s photo showing an older model.
Erik Cortina Meplat Giraud Case Trimmer YouTube Video Lapua

The Giraud trimmer is very precise. When set up correctly, it can trim brass with amazing consistency. In the video, Erik trims five pieces of brass in 15 seconds (6:32 mark). He then measures all five with precision calipers (7:00-8:08). All lengths are exact within .0005 (half a thousandth). Erik notes that the Giraud trimmer indexes off the case shoulder. As long as you have fire-formed brass with consistent base-to-shoulder dimensions, you should get very consistent trim lengths.

The secret to the system is a 3-way cutting head. This cutter can be swapped in and out in a couple minutes with wrenches provided with the kit. Erik has three different heads; one each for 6.5mm, 7mm, and .30 caliber. The video shows how to adjust the cutting heads to match caliber diameter (and to get the desired amount of inside/outside chamfer).

To trim and chamfer cases, you simply insert them nose-first into the cartridge-specific case-holder. Erik offers a smart tip — He uses a die locking ring to position the cartridge holder (3:15). This can be locked in place. Erik says die locking rings work much better than the hex-nuts provided by Giraud (with the hex-nut, one must re-set cut length each time you change case-holders.)

Erik Cortina Meplat Giraud Case Trimmer YouTube Video Lapua

The Giraud can be used in either horizontal or vertical modes. Erik prefers to have the trimmer aligned vertically, allowing him to push cases down on the trimmer head. But the trimming unit has twin sets of rubber feet, allowing horizontal or vertical orientation.

Erik Cortina Meplat Giraud Case Trimmer YouTube Video Lapua

Improved Case-Holder Made with Chamber Reamer:
For his .284 Shehane, Erik had to create his own case-holder (Giraud does not make one for that wildcat cartridge). Erik used his chamber reamer. To his surprise, Erik found that the brass was easier to trim in the custom case holder (compared to the Giraud-made spring-loaded holders). With a perfect fit, trimming and case extraction went more smoothly and the process was easier on his hands. (See 9:00-10:00). Based on Erik’s experience, you may want to create your own custom case-holder.

Trim Bullet Meplats Also
With a special bullet-holder fitting and meplat cutter head, the Giraud power trimmer can be used to trim bullet meplats. Trimming meplats can help make the Ballistic Coefficents of a batch of bullets more consistent. Uniforming meplats is also often done as a first step in the process of “tipping” bullets to improve BC.

Erik Cortina Meplat Giraud Case Trimmer YouTube Video Lapua

Giraud Power Trimmer

Permalink - Videos, Gear Review, Reloading No Comments »
October 7th, 2016

Is the .284 Shehane Inherently Accurate? You Better Believe It

F-Class Reloading .284 Winchester Win Shehane Accuracy

If you look at that 5-round group you might think it was shot with a 6 PPC or maybe a 6mmBR. But no, this was done with heavy 180gr Berger Hybrid bullets and the .284 Shehane, an improved version of the .284 Winchester. In fact, this impressive sub-quarter MOA group was shot while fire-forming with a very well-worn barrel!

Gun builder Ryan Pierce of Piercision Rifles explains:

Here’s a 5-shot 0.191″ group at 100 yards with my .284 Shehane fireforming loads. This barrel has 2200 rounds through it. It had 2000 as a straight .284 Win and then I set it back to .284 Shehane to form brass with. This was the first five rounds through it after I cleaned it after the last match. [The load was] 180 Hybrids with 54.0 grains of H4831 SC.

Ya, I figured why not I had some old barrels laying around so I just chopped 2″ off the back and 1″ off the front and chambered it up as a Shehane. Had 1000 pieces to fireform and didn’t want to do all that on a brand new barrel.

My fireform loads are going 2765 FPS. I have a 29″ barrel also though since it’s a setback. Once you get it formed I would push it faster than that or I wouldn’t even bother with the Shehane. My old straight .284 load at 2890 fps had ES spread in single digits for 10 shots. I figured if I get it up to 2935-2950 fps that will be a point or two saved in a several day match.

.284 Winchester Shehane Reamer Print PT&G

Fellow .284 Shehane shooter Erik Cortina notes that the .284 Shehane has a velocity edge over the straight .284 Win because it holds more powder: “The Shehane has more capacity than the .284 Winchester. Ryan is using 54.0 grains simply as a fire-forming load. Typical load for a Shehane is around 57.0 grains of Hodgdon H4831 SC.” By blowing the sidewalls out 0.010″, the .284 Shehane picks up about 3.3 grains of extra case capacity. That enhancement makes a BIG difference. The extra boiler room is enough to drive the 180s at 2900-2950 fps with H4831sc, with long barrels.

Permalink Bullets, Brass, Ammo, Competition 5 Comments »
May 28th, 2016

The Color Purple — A Father’s Gift to His Daughter

Erik Cortina 6.5x47 Lapua F-Class Rifle Daughter

“My daughter’s favorite color is purple, so I built her a purple rifle….”

Here’s a feel-good story about a family that shoots together, and a dad who did something very special for his daughter. All fathers create things for their children, but it’s unusual to find a Dad who has the skills (and motivation) to build a top-level competition rifle for his child. Our friend, Erik Cortina, did just that. Here is the story of the lovely purple maple F-Class rig Erik built for his girl Amberleeana.

Erik Cortina 6.5x47 Lapua F-Class Rifle Daughter

AUDIO FILE: Erik Cortina and Daughter Amberleeana Talk about the Purple Rifle. (Sound file loads when you click button).

My daughter would always tell me when I would go to a match, “Remember Dad, only Xs matter, the other stuff on the target is just there for decoration!” — Erik Cortina

A Father’s Gift: An F-Classer for Amberleeana

by Erik Cortina
My daughter Amberleeana has been wanting to shoot F-Class for a long time because I have been dragging her to matches since she was a little girl. She would come into my reloading room and watch me reload while she asked a million questions, all which I tried to answer to the best of my abilities. At age 9, she started hunting with a semi-custom rifle her grandfather gave her, a 6×47 Lapua built on a Remington 700 action with a Bartlein barrel. She has been very successful as a hunter so she decided to move to the next step and start shooting F-Class.

She shot my backup rifle before and she really enjoyed it. Here’s a YouTube video from a while back. This shows Amberleeana, at age 11, shooting at 500 yards for the very first time. You can see she does very well.

After hearing about the U.S. F-Class Under 25 (U25) Rifle Team selection trials in Raton this upcoming summer, Amberleeana wanted to try out for the U25 Team. I told her that was OK, but we had to modify the rifle she was currently using so that it could fit her better. After some consideration, I decided instead to sell that rifle and build her a brand new one.

Erik Cortina 6.5x47 Lapua F-Class Rifle Daughter

Her favorite color is purple, so I built her a purple rifle with adjustable cheek piece and butt pad. Shurley Brothers (Austin, TX) crafted the stock from maple, and then applied a purple gloss finish. We think it turned out great. Amberleeana is eager to take the rifle to Raton this summer: “I would like to make the Under 25 U.S. Rifle Team and compete at the F-Class World Championship in Canada in 2017. My main focus now is on the upcoming team try-outs in Raton, New Mexico.”

I hope that my daughter enjoys F-Class as much as I have, which will allow us to spend more time together on the range and in the reloading room.

6.5×47 Lapua Load Development
The purple rifle is chambered for the 6.5×47 Lapua cartridge. Our preliminary load work up shows great promise using Vihtavuori N140 powder, 136gr Lapua Scenar bullets, and CCI 450 primers. We tried a variety of charge weights, starting at 35.7 grains of N140 and ending up at 38.2 grains. The photo below shows an initial series of 3-shot test groups at 120 yards. What do you think is the best node? What charge weight would YOU select among these? [Editor: That final load of 38.2 grains looks very good, but we would want to check for pressure signs and repeat with 10-round strings checking for ES and SD. Also, if you go by the vertical only, the 36.0 and 36.3 loads are worth further testing.]

Erik Cortina 6.5x47 Lapua F-Class Rifle Daughter

Erik Cortina 6.5x47 Lapua F-Class Rifle DaughterPurple Rifle Specifications:
Stock: Shurley Brothers Lowrider XL stock (Maple)
(Finished by Shurley Brothers, bedded by Speedy Gonzalez)
Action: Kelbly F-Class Panda
Trigger: Flavio Fare
Barrel: Brux 32″-long, 1:8″-twist, 4-groove stainless, chambered in 6.5×47 Lapua
(Barrel work and assembly done by Erik Cortina)
Barrel Tuner: ECTuner (matches barrel contour)
Scope: Nightforce 15-55x52mm Competition
Front Rest: SEB NEO front rest
Rear Sandbag: Edgewood
Load: VV N140, 136gr Scenars, CCI 450 primers

Erik Cortina 6.5x47 Lapua F-Class Rifle Daughter

Permalink - Articles, - Videos, Gunsmithing 7 Comments »
May 1st, 2016

How to Make a Modified Case to Measure Length to Lands

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

In this video, Forum member Erik Cortina shows how to create a custom modified case for use with the Hornady Lock-N-Load Overall Length Gauge (formerly the Stoney Point Tool). While Hornady sells modified cases for many standard cartridges, if you shoot a wildcat such as the 6mm Dasher or .284 Shehane, you’ll need to create a custom modified case*. And even if you shoot a standard cartridge such as the .308 Winchester you can get more consistent measurements if you make a custom modified case from a piece of brass fired in your chamber.

The process is straight-forward. Take a piece of brass fired in your chamber and full-length size it (with about .002″ shoulder bump). Then you need to drill out the primer pocket. Erik uses a mini-lathe for the operation, but this general process can be done with a drill press or other tools. Erik shows how to do this with a 0.290″ HSS (High Speed Steel) drill bit on a mini-lathe. After drilling the hole comes the tricky part — you need to tap the case with the precise 5/16″ x 36 threads per inch (tpi) right-hand thread that matches the male thread on the O.A.L. Gauge. This 5/16″ x 36 tpi tap is pretty uncommon, but you can order it from Amazon.com if you can’t source it locally.

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

If you use a mini-lathe, Erik suggests loosening the tailstock slightly, so it can float while cutting the threads. Erik also says: “Make sure you get the tap on pretty tight — it’s going to want to spin.” Erik turns the case at about 100 rpm when tapping the threads. Once the case and tap are rigged, the actual tapping process (see video at 6:00) takes only a few seconds. While the mini-lathe makes the tapping process go more quickly, the threading can also be done with other systems.

TIP: Don’t just make one modified case, make three. That gives you one for your range kit, one for your home reloading bench, plus a spare (since you WILL eventually lose or misplace one).


Here’s the Stuff You Need

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

5/16″-36 TPI Threading Tap
The required thread is somewhat uncommon. You need a 5/16″ – 36 tpi Right Hand Thread Tap. If you can’t find it locally, Amazon.com carries the correct tap. Erik notes: “The 5/16-36 tpi tap is not a common size. I think Hornady did this on purpose to make it more difficult for the average guy to make his own modified cases.”

0.290″ Drill Bit
Erik uses an 0.290″ HSS “L” drill bit. (This “L” Letter Gauge code designates a 0.290″ diameter bit). A close metric equivalent would be 7.3 mm (0.286″). Erik says: “A 9/32″ drill will also work but it will be harder to run the tap in since the hole will be .281″ instead of .290″ with the Letter Gauge L bit.”

Tips for Using O.A.L. Gauge with Modified Case
We’ve noticed that many folks have trouble getting reliable, consistent results when they first start using the Hornady O.A.L. Gauge (formerly the Stoney Point Tool). We’ve found this is usually because they don’t seat the modified case properly and because they don’t use a gentle, consistent method of advancing the bullet until it just kisses the lands.

Here is our suggested procedure for use the O.A.L. Gauge. Following this method we can typically make three of four measurements (with the same bullet), all within .001″ to .0015″. (Yes, we always measure multiple times.)

1. Clean your chamber so there is no build-up of carbon, debris, or lube. Pay particular attention to the shoulder area.

2. Screw the modified case on to the O.A.L. Gauge. Make sure it is seated firmly (and doesn’t spin loose). Note, you may have to re-tighten the modified case after insertion in the chamber.

3. Place your selected bullet so that the ogive (max bullet diameter) is behind the case mouth. This prevents the bullet from “snagging” as you insert the tool in the action.

4. Insert the O.A.L. Gauge into your chamber smoothly. Push a little until you feel resistance. IMPORTANT — You need to ensure that the shoulder of the modified case is seated firmly against the front of your chamber. You may have to wiggle and twist the tool slightly. If you do not have the modified case seated all the way in, you will NOT get a valid measurement.

5. Advance the bullet slowly. (NOTE: This is the most important aspect for consistency!). Push the rod of the O.A.L. tool gently towards the chamber. DON’T shove it hard! Easy does it. Stop when you feel resistance.

6. IMPORTANT. After gently pushing on the rod, give the end of the rod a couple forward taps with your finger. If your bullet was slightly skewed, it may have stopped too far back. Adding a couple extra taps will fix that. If the bullet moves after the taps, then again push gently on the rod. NOT too much! You just want to push the bullet until it just “kisses” the lands and then stops. Do NOT jam the bullet into the rifling. If you do that you will never get consistent results from one measurement to the next.

* For a $15.00 fee, Hornady will make a custom modified case for you if you send two fired pieces of brass. Send fired cases and $15.00 check to: Hornady Manufacturing, Attn: Modified Cases, 108 S. Apollo St., Alda, NE 68810. More Info HERE.

Permalink - Videos, Bullets, Brass, Ammo, Reloading 7 Comments »
February 12th, 2016

Erik Cortina Reviews Forster Co-Ax Press

eric cortina forster co-ax

We met with our friend Erik Cortina at the Berger Southwest Nationals this week. Erik (shown above), had a beautiful new F-Open rifle to show us. This features a new, large-diameter Borden action and a Shurley Brothers fancy maple stock. Erik loves great hardware — whether it comes to actions, stocks, or reloading equipment. One of Erik’s favorite reloading tools is his Forster Co-Ax press.

Co-ax Forster press

Cortina has produced a series of YouTube videos about reloading hardware and precision hand-loading. Here is Erik’s video review of the Forster Co-Ax® reloading press. The Co-Ax is unique in both design and operation. It features dual guide rods and a central handle. You don’t screw in dies — you slide the die lock ring into a slot. This allows dies to float during operation.

Erik does a good job of demonstrating the Co-Ax’s unique features. At 1:00 he shows how to slide the dies into the press. It’s slick and easy. At the two-minute mark, Erik shows how sliding jaws clasp the case rim (rather than a conventional shell-holder). The jaws close as the ram is raised, then open as it is lowered. This makes it easy to place and remove your cases.

At the 5:20 mark, Erik shows how spent primers run straight down into a capture cup. This smart system helps keep your press and bench area clean of primer debris and residues.

While many Co-Ax users prime their cases by hand, the Co-Ax can prime cases very reliably. The priming station is on top of the press. Erik demonstrates the priming operation starting at 4:20.

Co-ax Forster press

Smart Accessories for the Co-Ax from Inline Fabrications
Lapua’s Kevin Thomas also owns a Co-Ax press, which he has hot-rodded with accessories from Inline Fabrications. Kevin tells us: “Check out the add-ons available from Inline Fabrications for the Co-Ax. I recently picked up a riser mount and a set of linkages for mine and love the results. The linkages are curved. When you replace the original straight links with these, the work area opens up substantially and the the press becomes much easier to feed.” CLICK HERE for Co-Ax Accessories.

Inline Fabrications Forster Co-Ax Accessories

Forster Co-Ax Curved Side Linkage
(For Better Access)

CLICK HERE

Forster Co-Ax Ultramount
(Riser plus Bin Support)

CLICK HERE

Co-Ax Roller Lever (Short)

CLICK HERE

Dual LED Lighting Kit for Co-Ax

CLICK HERE

Permalink - Videos, Gear Review No Comments »
January 13th, 2016

Bigger, Bolder Borden — New Large-Diameter Borden Action

Borden Rifles Rimrock action BRM XD large receiver stainless

Our friend Erik Cortina told us that Jim Borden of Borden Accuracy has developed a new “wide-body” action, the Borden BRMXD. Erik is building a rifle around this action to shoot at the 2016 Berger SW Nationals. The new BRMXD is Borden’s first venture into action bodies larger than 1.350″ in diameter. The round BRMXD action measures a stout 1.470″ in diameter and comes standard with bottom recoil lug. If the customer prefers, Border can deliver the action with a conventional recoil lug on the front. We like the looks of Borden’s new BRMXD, and we bet this new stainless action will be a smooth runner.

Borden Rifles Rimrock action BRM XD large receiver stainless

Borden BRM-XD Action Specifications:

• Action: BRM-XD
• Length: 8-1/8″
• Outside Diameter: 1.470″
• Port Length: Single Port: 2.750″
— Dual Port w/ Mini Port for BR / PPC: 2.750″ Loading & 1.8″ Eject Port
— Dual Port w/ x47 Family Port: 2.750″ Loading & 1.9″ Eject Port
— Dual Port w/ .284 Family Port: 2.750″ Loading & 2.4″ Eject Port
• Weight: 42.6 oz for Single Port
• Price: $1325.00 with bottom lug for a single port – $1400.00 for a dual port + shipping
• Price: $1250.00 for no lug (Glue-In Only)

Borden Accuracy will also offer a 0.215″ spacer for shooters who wish to use their current PANDA barrels with a new BRMXD action. This hardened steel spacer will cost $50.00 (introductory price).

Borden Rifles Rimrock action BRM XD large receiver stainless

Borden Rifles Rimrock action BRM XD large receiver stainless

Permalink Gunsmithing, New Product 3 Comments »
December 20th, 2015

Sorting Bullets for Competition — What Works Best

Bryan Litz F-TR Bullet Sorting
Bryan Litz with his F-TR Nat’l Championship-winnning rifle, and the man who built it, John Pierce.

Bryan Litz knows something about bullet shapes and dimensions. He’s the chief designer of many of Berger’s projectiles, including the successful line of Hybrid bullets. Bryan also understands how bullets actually perform in “real world” competition. Bryan won BOTH the Mid-Range and Long-Range National F-TR Championships this year, a remarkable accomplishment. With Bryan’s technical expertise combined with his shooting skills, few people are better qualified to answer the question: “how should I sort bullets when loading for competition?”

Bullet Sorting Strategies — OAL vs. Base to Ogive
At the 2015 Berger Southwest Nationals, Forum member Erik Cortina cornered Bryan Litz of Applied Ballistics. Erik was curious about bullet sorting. Knowing that bullets can be sorted by many different criteria (e.g. weight, overall length, base to ogive length, actual bearing surface length etc.) Erik asked Bryan to specify the most important dimension to consider when sorting. Bryan recommended sorting by “Base to Ogive”. Litz noted that: “Sorting by overall length can be misleading because of the nature of the open-tip match bullet. You might get a bullet that measures longer because it has a jagged [tip], but that bullet might not fly any different. But measuring base to ogive might indicate that the bullet is formed differently — basically it’s a higher resolution measurement….”

Ballistics Q & A in Shooter’s Forum
Got more questions about bullets? Our Shooters’ Forum has a special area for Bullets & Ballistics topics. There you can get your own questions about bullets and ballistics answered by Bryan Litz and other experts from Applied Ballistics.

accurateshooter.com forum bryan litz berger ballistics bullets

Permalink Bullets, Brass, Ammo, Reloading 1 Comment »
November 29th, 2015

Cortina’s Corner: Rebarreling an AR15 to 6.5 Grendel

Erik Cortina barrel 6.5 Grendel

Here’s an interesting project — using a second-hand barrel to upgrade an AR15. Our friend Erik Cortina decided to make his AR15, originally chambered in 6.8 SPC, into a 6.5 Grendel. Erik acquired a “pre-owned” 6.5-06 match barrel through our Shooters’ Forum. Erik inspected the barrel with a bore-scope and confirmed it was in good shape after the first few inches (past the chamber). The 6.5-06 barrel had more than enough length, so he trimmed off the chamber end, then contoured the barrel to fit his AR15. This is a smart way to upgrade a gun without spending $350 or more on a brand new barrel.

In the first video, Erik explains the process of converting his 6.8 SPC AR15 into a 6.5 Grendel: “I take the upper completely apart and pull barrel off which will be used to take dimensions for new barrel. The new barrel will be turned from an old competition heavy barrel. All the barrel reaming will be done using JGS reamers. I will also use JGS reamers to make a seating and F/L sizing die.”

In the second video, Erik contours the “pre-owned” barrel to fit his AR. He uses an old bolt-action 6.5-06 competition barrel and cuts it to 17″ long and contours it to fit his AR-15. The barrel is turned down on a manual lathe to .750″ outside diameter for the majority of its length in order to fit the gas system barrel block that is made for a .750″ barrel. After contouring, the barrel will be threaded and chambered.

6.5 Grendel AccurateShooter.com cartridge Erik Cortina

Permalink - Videos, Gunsmithing, Tactical 4 Comments »
May 28th, 2015

Cortina’s Corner: ChargeMaster Tips (The Trickle Test)

Chargemaster tip Erik Cortina beep trickle Dandy Omega trickler Sartorius
Note that Erik has fitted a cartridge tip on his RCBS ChargeMaster’s dispensing tube.

Erik Cortina has been fiddling around with his RCBS ChargeMaster and he discovered something interesting. Through a series of tests he determined that the ChargeMaster dispensed slightly more precise charges when he trickled the last few 10ths of a grain on to the RCBS pan. Erik wasn’t expecting this result, but he confirmed there may be a slight benefit to this trickling method (as opposed to allowing the ChargeMaster to dispense the full charge).

We should note that Erik’s preferred method of weighing powder is to first dispense a slightly lower charge with the RCBS, transfer the pan to a laboratory-class Sartorius magnetic force restoration scale, then trickle up with his Omega (Dandy Products) Powder Trickler. However, if you don’t have a $800+ laboratory-grade scale, you might just try trickling on to the ChargeMaster pan. You can see Erik’s test procedure in this video:

(more…)

Permalink - Videos, Reloading 1 Comment »
May 26th, 2015

Wet and Wild at 2015 TXRA Long Range Championship

Texas Rifle Association Long Range Championship Bayou Rifles

This Texas Rifle Association (TXRA) Long Range Championship was a match to remember. Despite rain threats, organizers decided to hold the match. On Friday, against the advice of the weather forecasters, the team match was held. The weather held out long enough to complete the match but over four inches of rain fell Friday night. This made for an interesting weekend as competitors had to park at the 300-yard line and shooters and gear had to be trailered to the 1,000-yard line.

TSRA LR Championship Photo Gallery | TSRA LR Championship Complete RESULTS

Texas Rifle Association Long Range Championship Bayou Rifles

(more…)

Permalink Competition, News No Comments »
April 7th, 2015

Make Your Own Modified Case for Hornady O.A.L. Gauge

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

In this video, Forum member Erik Cortina shows how to create a custom modified case for use with the Hornady Lock-N-Load Overall Length Gauge (formerly the Stoney Point Tool). While Hornady sells modified cases for many standard cartridges, if you shoot a wildcat such as the 6mm Dasher or .284 Shehane, you’ll need to create a custom modified case*. And even if you shoot a standard cartridge such as the .308 Winchester you can get more consistent measurements if you make a custom modified case from a piece of brass fired in your chamber.

The process is straight-forward. Take a piece of brass fired in your chamber and full-length size it (with about .002″ shoulder bump). Then you need to drill out the primer pocket. Erik uses a mini-lathe for the operation, but this general process can be done with a drill press or other tools. Erik shows how to do this with a 0.290″ HSS (High Speed Steel) drill bit on a mini-lathe. After drilling the hole comes the tricky part — you need to tap the case with the precise 5/16″ x 36 threads per inch (tpi) right-hand thread that matches the male thread on the O.A.L. Gauge. This 5/16″ x 36 tpi tap is pretty uncommon, but you can order it from Amazon.com if you can’t source it locally.

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

If you use a mini-lathe, Erik suggests loosening the tailstock slightly, so it can float while cutting the threads. Erik also says: “Make sure you get the tap on pretty tight — it’s going to want to spin.” Erik turns the case at about 100 rpm when tapping the threads. Once the case and tap are rigged, the actual tapping process (see video at 6:00) takes only a few seconds. While the mini-lathe makes the tapping process go more quickly, the threading can also be done with other systems.

TIP: Don’t just make one modified case, make three. That gives you one for your range kit, one for your home reloading bench, plus a spare (since you WILL eventually lose or misplace one).


Here’s the Stuff You Need

Hornady Stony Point Tool OAL O.A.L. gauge bullet seating length ogive checker

5/16″-36 TPI Threading Tap
The required thread is somewhat uncommon. You need a 5/16″ – 36 tpi Right Hand Thread Tap. If you can’t find it locally, Amazon.com carries the correct tap. Erik notes: “The 5/16-36 tpi tap is not a common size. I think Hornady did this on purpose to make it more difficult for the average guy to make his own modified cases.”

0.290″ Drill Bit
Erik uses an 0.290″ HSS “L” drill bit. (This “L” Letter Gauge code designates a 0.290″ diameter bit). A close metric equivalent would be 7.3 mm (0.286″). Erik says: “A 9/32″ drill will also work but it will be harder to run the tap in since the hole will be .281″ instead of .290″ with the Letter Gauge L bit.”

Tips for Using O.A.L. Gauge with Modified Case
We’ve noticed that many folks have trouble getting reliable, consistent results when they first start using the Hornady O.A.L. Gauge (formerly the Stoney Point Tool). We’ve found this is usually because they don’t seat the modified case properly and because they don’t use a gentle, consistent method of advancing the bullet until it just kisses the lands.

Here is our suggested procedure for use the O.A.L. Gauge. Following this method we can typically make three of four measurements (with the same bullet), all within .001″ to .0015″. (Yes, we always measure multiple times.)

1. Clean your chamber so there is no build-up of carbon, debris, or lube. Pay particular attention to the shoulder area.

2. Screw the modified case on to the O.A.L. Gauge. Make sure it is seated firmly (and doesn’t spin loose). Note, you may have to re-tighten the modified case after insertion in the chamber.

3. Place your selected bullet so that the ogive (max bullet diameter) is behind the case mouth. This prevents the bullet from “snagging” as you insert the tool in the action.

4. Insert the O.A.L. Gauge into your chamber smoothly. Push a little until you feel resistance. IMPORTANT — You need to ensure that the shoulder of the modified case is seated firmly against the front of your chamber. You may have to wiggle and twist the tool slightly. If you do not have the modified case seated all the way in, you will NOT get a valid measurement.

5. Advance the bullet slowly. (NOTE: This is the most important aspect for consistency!). Push the rod of the O.A.L. tool gently towards the chamber. DON’T shove it hard! Easy does it. Stop when you feel resistance.

6. IMPORTANT. After gently pushing on the rod, give the end of the rod a couple forward taps with your finger. If your bullet was slightly skewed, it may have stopped too far back. Adding a couple extra taps will fix that. If the bullet moves after the taps, then again push gently on the rod. NOT too much! You just want to push the bullet until it just “kisses” the lands and then stops. Do NOT jam the bullet into the rifling. If you do that you will never get consistent results from one measurement to the next.

* For a $15.00 fee, Hornady will make a custom modified case for you if you send two fired pieces of brass. Send fired cases and $15.00 check to: Hornady Manufacturing, Attn: Modified Cases, 108 S. Apollo St., Alda, NE 68810. More Info HERE.

Permalink - Videos, Reloading 11 Comments »
March 2nd, 2015

Bullet Sorting — Bryan Litz Offers Smart Advice

At the 2015 Berger Southwest Nationals, Forum member Erik Cortina cornered Bryan Litz of Applied Ballistics. Erik, the F-Open winner in the 600-yard Mid-Range match, was curious about bullet sorting. Knowing that bullets can be sorted by many different criteria (e.g. weight, overall length, base to ogive length, actual bearing surface length etc.) Erik asked Bryan to specify the most important dimension to consider when sorting. Bryan recommended sorting by “Base to Ogive”. Litz noted that: “Sorting by overall length can be misleading because of the nature of the open-tip match bullet. You might get a bullet that measures longer because it has a jagged [tip], but that bullet might not fly any different. But measuring base to ogive might indicate that the bullet is formed differently — basically it’s a higher resolution measurement….”

Ballistics Q & A in Shooter’s Forum
Got more questions about bullets? Our Shooters’ Forum has a special area for Bullets & Ballistics topics. There you can get your own questions about bullets and ballistics answered by Bryan Litz and other experts from Applied Ballistics.

accurateshooter.com forum bryan litz berger ballistics bullets

Permalink - Videos, Bullets, Brass, Ammo No Comments »