July 23rd, 2014

Sinclair Full-Length Sizing Die Shims

When your cases become hard to extract, or you feel a stiff bolt lift when removing a cartridge, it’s probably time to full-length size your cases, and “bump” the shoulder back. With a hunting load, shoulder bumping may only be required every 4-5 loading cycles. Short-range benchrest shooters, running higher pressures, typically full-length size every load cycle, bumping the shoulder .001-.002″. High Power shooters with gas guns generally full-length size every time, and may need to bump the shoulders .003″ or more to ensure reliable feeding and extraction.

Sinclair Die Shims

Use Shims for Precise Control of Shoulder Bump
Some shooters like to set the “default” position for their full-length die to have an “ample” .003″ or .004″ shoulder bump. When they need less bump, a simple way to reduce the amount of shoulder movement is to use precision shims in .001″ (one-thousandth) increments.

Mats Johansson writes: “I’ve been using [shims] since Skip Otto (of BR fame) came out with them. I set up my dies with the .006″ shim, giving me the option of bumping the shoulder a bit more when the brass gets old and hardens while still having room to adjust up for zero headspace, should I have missed the original setup by a thou or two. Hunting rounds can easily be bumped an extra .002-.003″ for positive, no-crush feeding. Being a safety-oriented cheapskate, I couldn’t live without them — they let me reload my cases a gazillion times without dangerous web-stretching. Shims are a must-have, as simple as that.”

Sinclair Die ShimsSinclair Int’l offers a 7-piece set of Die Shims that let you adjust the height of your die (and thereby the amount of bump and sizing) in precise .001″ increments. Sinclair explains: “Some handloaders will set their die up to achieve maximum sizing and then progressively use Sinclair Die Shims between the lock ring and the press head to move the die away from the shellholder. Doing this allows you to leave the lock ring in the same position. These shims are usually available in increments of .001″ and work very well.”

Seven Shims from .003″ to .010″
Sinclair’s $12.49 Die Shim Kit (item 22400) includes seven shims in thicknesses of .003, .004, .005, .006, .007, .008, and .010. For ease of use, shim thickness is indicated by the number of notches cut in the outer edge of each shim. Even without looking you can “count” the notches by feel.

Permalink Reloading 8 Comments »
July 22nd, 2014

Huge Inventory Reduction Sale of RCBS Products at Bullets.com

Bullets.com has launched a huge closeout on its entire RCBS inventory. Here’s a great opportunity to save big bucks on high-quality RCBS tools and reloading accessories, including RCBS Chargemasters and even RCBS Rockchucker presses. The folks at Bullets.com report: “We have slashed prices to levels at or below cost on hundreds of items.” Guys — take note: this is a unique opportunity to pick up some great gear at truly rock-bottom prices. In fact the deals are so good that your Editor plans to purchase a couple presses, a powder measure stand, and some accessories for my RCBS 2000 progressive press. I really don’t think you can beat these prices… and remember this is an inventory close-out sale, limited to stock on hand. When it’s gone, it’s gone. So don’t say we didn’t warn you!

RCBS Rebate Bullets.com inventory reduction sale

GO to RCBS Sale at Bullets.com

Closeout items include:
RCBS Rebate Bullets.com inventory reduction saleReloading Presses
Electronic Powder Measures
Reloading Kits
Digital and Beam Scales
Tumblers
Ultrasonic Cleaners
Sizing and Seating Dies
Shell Holders
Bullet Casting Kits
Case Prep Tools and much more.

Here Are Some of the RCBS Presses on Sale:
RCBS Rebate Bullets.com inventory reduction sale

Get RCBS Factory Rebates
In connection with this Bullets.com SALE, you can save even more with RCBS factory rebates. If you spend $50.00 you can get a $10.00 rebate. If you spend at least $300.00 on RCBS products you can save $50.00. These rebates are good through 12/31/2014. CLICK HERE for details.

Click for Detals
RCBS Rebate Bullets.com inventory reduction sale

Permalink Hot Deals, Reloading No Comments »
July 19th, 2014

Tips on Case-Trimming from PMA Tool

The folks at PMA Tool, makers of arbor presses, neck-turning tools, and other case-prep tools, offer some good advice about case trimming on the PMA Tool Blog. Here we reprint a PMA blog post that explains case trimming basics and helps you choose the right case-trimming tool for your needs.

Case Trimming Basics
Trimming the cartridge case to the proper length is a crucial step in case preparation that should not be overlooked or underestimated. The cartridge case or the rifle can be damaged, or even worse you get badly injured. In most instances cases should be trimmed after firing and sizing. Trimming new brass is necessary for a lot of wildcats and can be beneficial in some instances, but by and large, trimming new brass is not necessary for most situations (unless you are neck-turning). Cases should be trimmed after you have sized the case, because the expander ball on the decapping pin can (and will) stretch the neck. Those of us who neck size should get into the habit of trimming after sizing as well. This is a good rule of thumb to go by, and hopefully it will keep you safe during the reloading and shooting process.

There are so many case trimmers out there that work, deciding which one is right for you can be confusing. Even though I have trimmed thousands of cases, using about every method possible, I can’t answer the question of what case trimmer is right for you because of all the variables that may be involved. I can, however shed some light on the subject.

Wilson Micrometer Case Trimmer

The two most popular designs of trimmers either index (1) off the base or the head of the case, (2) off the shoulder or datum line of the case. There are pros and cons to each and it all depends on what you are willing to live with.

Indexing off the Base (Case Head)
Let’s talk about the first one I have listed, indexing off the base, or the head of the case. The pros to this method are that you can achieve a very accurate over all length and that is after all, what it is all about. The cons to this method are that you can get some variation doing it this way. Let me explain, the base is not always square to the body or can be damaged during firing especially if it is fired through a military style rifle with a very aggressive ejector. These cases should be discarded, but sometimes they can be overlooked. This condition can lead to an over all length that is incorrect. The case head being out of square will be corrected upon firing, however that case will wind up being shorter than the rest of your cases, possibly creating a difference in the neck tension on the bullet. The more you can do to eliminate variables in your reloads the better off you are going to be. This method can also be very slow, and if the user gets careless the result will be a inconsistent over all length.

Forster Case Trimmer

Indexing off the Shoulder (Datum Line)
The second method I mentioned, trimming off the shoulder or the datum line of the case, has its pros as well. I have found this to be the quickest of the methods and very accurate as well. After the case has been sized through the die the dimensions (particularly the headspace) of the cases are usually very uniform and exact, this allows the case to be trimmed by indexing off the shoulder. This method can be done very quickly, by hand, or by powering either the case, or the trimmer. You also don’t have to worry about the case heads being out of square with the body using this method. Generally the trimming time is cut in half, and this leads to greater focus on the job, without becoming careless. [Editor's Note: The World's Finest Trimmer (WFT) is one power device that indexes off the shoulder datum. It works fast and is very precise. The new WFT 2 Model with interchangeable trim chambers works with multiple cartridge types.]

Little Crow WFT

Summary
The choice is yours to make. I hope that this was some help to you, whether you are looking for your first trimmer or looking to replace the trimmer you have. Just remember to always put safety first and accuracy second, and you will start making little bug holes in no time.

Story Tip by EdLongrange. User Submissions are welcome.
Permalink Bullets, Brass, Ammo, Reloading 5 Comments »
July 18th, 2014

Neck Bushing Geometry — How Good Are YOUR Bushings?

Do you use bushings to size your case-necks? Are you assuming that your bushings are actually round on the inside, with a hole that’s centered-up properly? Well you may be in for an unpleasant surprise, based on what our friend Jim de Kort recently discovered. Jim was concerned about the run-out on his brass. His cases went into his bushing-equipped FL die pretty straight, but came out of the die with up to .004″ run-out. “What gives?”, Jim wondered. “Could the problem be the bushings themselves?”

To answer that question, Jim decided to examine his bushings. Using an Accuracy One Wheel-drive concentricity gauge, Jim checked out some of his neck bushings. What he discovered may surprise you…


Neck Bushing Flaws Revealed

Trust no one… — Jim de Kort

Jim writes: “I measured the concentricity of my 6BR rounds today. I noticed they went into the neck-bushing equipped full-length sizing die with <.001" deviation but came out with .003-.004". The culprit, it appears, was the bushing itself. Without it the cases stayed within .0005" to .001" deviation, so something was happening with the bushing.

One bushing had .00025" deviation on the outside, yet almost .003" on the inside, so it is crooked. But even when using a bushing that is within .001" I still get .003" runout after sizing. I repeated the same procedure for my 6x47 and got the same results. When using the bushing, concentricity suffers a lot."

Before we bash the bushing-makers, we must acknowledge that many different things can contribute to excessive run-out and/or mis-alignment of case-necks. We don’t have all the answers here, and Jim would be the first to say that some mysteries remain. Still, these are interesting results that give all precision hand-loaders something to think about.

Jim Borden also offers this tip: “Check the trueness of the face of the die cap. That has more to do with trueness than the bushing. Also check perpendicularity of hole in bushing to top surface. When I was making dies, the cap was made by threading and facing the threaded tenon in same setup.”

bushing neck die run-out concentricity


Editor’s Comment: Many people have great results with neck-bushing dies, but Jim isn’t the only fellow who has seen some very odd results. I personally employ honed, non-bushing dies for many of my chamberings. These non-bushing dies (with the necks honed for .002-.003″ neck tension) produce extremely straight ammo, with run-out consistently under .0015″.

Permalink Reloading 8 Comments »
July 13th, 2014

Tempilaq and Green Label Thinner

Tempilaq is a temp-sensitive “paint-on” liquid coating which can be used to gauge case temperatures during the annealing process. Tempilaq is offered in 43 different temperature ratings from 175°F to 1900°F (79°C to 1038°C).

Tempilaq quickly dries, forming a dull, opaque film. Then, when heat is applied to that surface and the rated temperature is reached, the film liquefies, letting you know that you’ve reached the target annealing temp. Because you can ruin brass by over-annealing, we recommend using Tempilaq when annealing, at least when you are setting up your torch position and calculating the amount of time your cases should be exposed to the flame. To prevent premature “burn-off” you can apply the Tempilaq to the inside of the necks.

Thinner for Tempilaq
One of our Forum members from Australia was concerned about some 700° F Tempilaq he had recently obtained. He explained that it was thick and glue-like, making it hard to apply. He wondered if there was a thinner he could use with the 700° Tempilaq.

Yes there is such a product: Green Label Thinner from Tempil (the manufacturer of Tempilaq). Forum member Gary M. (aka gmorganal) tells us: “You can buy Temiplaq thinner from McMaster Carr, and they will have it on your doorstep about the time you hang up the phone. I just ordered from them this week, and [the thinner] was delivered the next day. The thinner is about half the price of the [Tempilaq] paints — roughly $5.00 or so per bottle.” Tempil explains: “Use Green Label Thinner to dilute Tempilaq G® or to replace evaporated solvent. For use only with Tempilaq G® temperature indicating liquid.”

Permalink Bullets, Brass, Ammo, Reloading 1 Comment »
July 10th, 2014

Try Using O-Rings with Sizing Dies for Reduced Neck Run-out

Here’s an inexpensive procedure that can help you load straighter ammo, with slightly better measured concentricity (i.e. less run-out) on the case necks and bullets. Simply use a rubber O-Ring on the underside of the die locking ring. This allows the die to self-align itself (slightly) to the case that is being sized. Without the O-Ring, if the flat surface on the top of your press is not perfectly square with the thread axis, your die can end up slightly off-angle. This happens when the bottom of the locking ring butts up tight against the top of the press. The O-Ring allows the die to float slightly, and that may, in turn, reduce the amount of run-out induced during case sizing.

reloading die O-ring

Top prone shooter German Salazar has tried this trick and he says it works: “Go to your local hardware store and get a #17 O-Ring (that’s the designation at Ace Hardware, don’t know if its universal). Slip the O-Ring on the die and re-adjust the lock ring so that the O-Ring is slightly compressed when the die is at the correct height. Size and measure a few more cases. You will probably see a slight improvement in neck concentricity as the die can now float a bit as the case enters and leaves it. This isn’t going to be a dramatic improvement, but it’s a positive one.” We want to stress that adding O-Rings to sizing dies may help some reloaders, but we don’t offer this as a panacea. Try it — if using the O-Ring reduces measured runout that’s great. If it doesn’t, you’ve only spent a few pennies to experiment.

reloading die O-ring

Lee Precision makes die lock rings with built-in O-Rings. Lee’s distinctive lock ring design allows the same kind of self-alignment, which is good. However, Lee lock rings don’t clamp in place on the die threads, so they can move when you insert or remove the dies — and that can throw off your die setting slightly. By using an O-Ring under a conventional die lock ring (that can be locked in place), you get the advantages of the Lee design, without the risk of the lock ring moving.

Permalink Reloading 15 Comments »
July 8th, 2014

Complete RCBS Reloading Kit with Rock Chucker Press on Sale

Are you just getting started in reloading, or maybe you have a buddy who is planning to start hand-loading? Well here’s a very complete RCBS reloading package for just $279.95 at Midsouth Shooters Supply. You get pretty much everything you need, including a scale, powder measure, loading block, powder funnel, reloading manual, and a rugged RCBS Rock Chucker press that can last a lifetime.

RCBS Reloading RockChucker Master Kit

Midsouth’s $279.95 sale price for the RCBS Rock Chucker Supreme Master Reloading Kit (RCBS item 09361) is a very good deal. We checked around and this kit typically sells for $325.00 to $345.00. For example, MidwayUSA currently lists this package for $325.99. Right now, Midsouth beats MidwayUSA’s price by more than forty-six bucks. That will pay for some powder and bullets.

RCBS Rock Chucker Supreme Master Reloading Kit includes all these items:

- Rock Chucker Supreme Single Stage Press
- 505 Balance Beam Scale (with pan)
- Uniflow Powder Measure
- Speer Reloading Manual
- Hand Priming Tool for small and large Primers
- Universal Case Loading Block (40-case capacity)
- Powder Funnel for .22 to .45 Calibers
- Case Lube Kit, with Lube Pad and Case Lube
- Case-Neck Brush Ttool
- Chamfer/deburring “Rocket” Tool
- Folding Hex Key Set (with 8 SAE sizes)

RCBS Reloading RockChucker Master Kit

Permalink Hot Deals, Reloading 1 Comment »
July 5th, 2014

Download FREE Updated Vihtavuori Reloading Guide PDF

The digital version of the Vihtavuori Reloading Guide (13th Edition) has been updated. It can be downloaded for FREE in PDF Format.

CLICK HERE to Download Vihtavuori Reloading Guide (Updated June, 2014)

Vihtavuori Reloading GuideIn this latest update, two new calibers have been added: .221 Remington Fireball and .300 AAC Blackout. (Lapua now makes .221 Fireball brass.) In addition, there is updated data for the popular .260 Remington cartridge. That’s good news as we know that many of our readers are looking for load data for the .260 Rem. Vihtavuori makes a variety of powders well-suited for both hunting and match loads in the .260 Rem.

The Vihtavuori Reloading Guide covers more than 20 different types of VV reloading powders. It was most recently updated in June, 2014. The online reloading info database at Vihtavuori.com has also been updated.

Vihtavuori Reloading Guide

Data Tip from EdLongrange. We welcome reader submissions.
Permalink Reloading 2 Comments »
July 1st, 2014

Sinclair International Tech Staffers Offer Precision Reloading Tips

cartridge reloadingA while back, Sinclair International’s Reloading Press Blog featured a “round-table” discussion of reloading techniques. Sinclair’s team of tech staffers were asked: “What do you feel is the one-most crucial step in precision reloading?”

Here are their responses (along with comments from our Editors):

Phil Hoham: “I feel that when working up a load do not go too high or too low in your powder charge. Stay away from “suggested loads” you hear at the range, or on the internet. Always be sure to use a published reloading manual that presents not only minimums and maximums, but also pressure, velocity, and a proper range of powders used. Do not get distracted in the reloading process, and remain focused at all times during each step involved.”

AccurateShooter.com: Some loads presented on the Internet are OK as a starting point, but it is absolutely critical to understand that pressure maximums will vary considerably from one rifle to another (of the same chambering). For example, one 6mmBR rifle shooting 105gr bullets can max out with 30.0 grains of Varget powder, while another rifle, with the same chamber dimensions, but a different barrel, could tolerate (and perform better) with half a grain more powder. You need to adjust recommended loads to your particular rifle and barrel.

Froggy Reloading Bench

Pete Petros: “This could be a very broad topic, but if I were to pick one, it would be making sure to pay close attention, and weigh each and every powder charge to ensure that each load is exact and consistent. This is important not only for accuracy, but also for safety reasons.”

AccurateShooter.com: If you’re shooting beyond 200 yards, it is critical to weigh your loads with an accurate scale. Loads that are uniform (within a few kernels) will exhibit lower Extreme Spread and Standard Deviation. And remember, even if you stick with the same powder, when you get a new powder lot, you may have to adjust your load quite a bit. For example, .308 Palma shooters have learned they may need to adjust Varget loads by up to a full grain from one lot of Varget to the next.

Ron Dague: “I feel that the most important step(s) in reloading for accuracy are in the initial case prep. Uniforming the primer pocket to the same depth to ensure consistency in primer seating is a crucial step. Additionally de-burring the flash holes, each in the same way to clean up and chamfer the inside is important. It ensures that the ignition from the primer is uniform and flows out in the same consistent pattern. Doing so will create uniform powder ignition and tighten up your velocity Extreme Spread.”

AccurateShooter.com: With some brands of brass, primer pocket uniforming and flash-hole deburring is useful. However, with the best Lapua, Norma, and RWS brass it may be unnecessary, or worse, counter-productive. So long as your Lapua brass flash-holes are not obstructed or smaller than spec, it may be best to leave them alone. This is particularly true with the small flash holes in 220 Russian, 6BR, and 6.5×47 cases. MOST of the flash-hole reaming tools on the market have cutting bits that vary in size because of manufacturing tolerances. We’ve found tools with an advertised diameter of .0625″ (1/16″) that actually cut an 0.068″ hole. In addition, we are wary of flash-hole deburring tools that cut an aggressive inside chamfer on the flash-holes. The reason is that it is very difficult to control the amount of chamfer precisely, even with tools that have a depth stop.

Rod Green: “I feel that bullet seating is the most important step. If you had focused on making sure all prior steps (case prep, powder charge, etc.) of the process have been carefully taken to ensure uniformity, bullet seating is the last step, and can mean all the difference in the world in terms of consistency. Making sure that the bullet is seated to the same depth each time, and time is taken to ensure that true aligned seating can make the load.”

Bob Blaine: “I agree with Rod. I strongly feel that consistent bullet seating depth is the most important step in creating the most accurate hand loads. I have seen the results in both my bench and long range rifles. Taking the time to ensure exactness in the seating process is by far, the number one most important step in my book.”

AccurateShooter.com: Agreed. When loading match ammo, after bullet seating, we check every loaded round for base of case to ogive length. If it varies by more than 3 thousandths, that round is segregated or we attempt to re-seat the bullet. We measure base of case to bullet ogive with a comparator mounted on one jaw of our calipers. You may have to pre-sort your bullets to hold the case-base to ogive measurement (of loaded rounds) within .003″.

Permalink Reloading, Tech Tip 4 Comments »
June 4th, 2014

Sinclair Int’l Guide to Cartridge Case Lubrication

Sinclair International has a good article on Case Lubrication which shows the various products and application methods available. Part of Sinclair’s Step-By-Step Reloading series, the article shows how to apply Spray Lube, Die Wax, or conventional lube from a Pad. The story also explains how to use dry lube to slick up the inside of your case necks.

Spray Lubes
High-volume reloaders often turn to spray-on lubricants such as the RCBS Case Slick (#749-001-341) or the Hornady One Shot (#749-001-065) to quickly lubricate large numbers of cases at once. An indispensable piece of gear that helps make spray lubing easy is a lube rack (#749-011-550) – a polymer block that holds cases upright and arranged to maximize their exposure to the spray.

Hornady spray cartridge case Lube

Editor’s Note: Ballistol Aerosol is other good spray product for regular full-length sizing (not heavy case forming). It goes on clear (no chalky residue), it is ultra-slippery, and it will remove the carbon from your case necks as you apply Ballistol with a patch. This is my primary spray lube — but many folks hate the distinctive Ballistol smell. Try before you buy.

Sizing Die Wax
Over the years, many benchrest shooters have come to trust Imperial Sizing Die Wax (#749-001-052) for their case lube needs. It offers high lubricity and easily wipes off with a paper towel. In fact, its lubricity makes it a popular choice for case forming, for those wildcat folks who need to form their own unique or obsolete cartridges. Unlike lube pads or spray lubes, sizing wax is applied more naturally. You just put a little on your fingers and transfer it to the cases by handling them. As simple and easy as Imperial Sizing Die Wax is to use, it’s probably best for low-volume applications.

Cartridge Case lubrication imperisal Die wax case sizing reloading

Dry Lubricant
Redding’s Imperial Application Media (#749-001-166) is a dry neck lube used to lube the inside of the neck, whether you’re full-length sizing or neck-sizing only. It consists of ceramic spheres coated with a fine graphite-based powder. You simply dip the neck into the container for a second to pick up the right amount of lube. This lube enables the expander ball to work smoothly throughout the case neck –instead of “grabbing” or “chattering” — to minimize case neck stretching.

Cartridge Case lubrication imperisal Die wax case sizing reloading

Editor’s Note: Dry Lube is also very useful if you ultrasonically clean your cases. After the ultrasound process, the inside of the case neck can be so “squeaky clean” that bullets don’t seat smoothly. A quick application of dry lube will help bullets slide into the neck easier and the neck “grip” on the bullets should be more consistent from round-to-round. Consistent neck tension is key to accuracy and uniform velocities.

Story Tip from EdLongrange. We welcome reader submissions.
Permalink Reloading 5 Comments »
June 2nd, 2014

Lyman E-Zee Case Length Gauge II Measures 70+ Cartridge Types

Lyman E-zee case gauge II cartridge length gageLyman’s popular E-Zee Case Length Gauge is now bigger and better. The new version II of Lyman’s Case Gauge is much larger than the original version. The Case Gauge II now measures more than 70 cartridge types — way more than before. This tool is a metal template with SAAMI-max-length slots for various cartridge types, including relatively new cartridges such as the .204 Ruger and Winchester Short Magnums. This tool allows you to quickly sort brass or check the dimensions. If you have a bucketful of mixed pistol brass this can save you hours of tedious work with calipers. You can also quickly check case lengths to see if it’s time to trim your fired brass.

If you load a wide variety of calibers, or do a lot of pistol shooting, we think you should pick up one of these Lyman Case Gauge templates. They are available for under twenty bucks at Sinclair Int’l and Amazon.com. The folks at Sinclair say the E-Zee Case Gauge II has a been a hot seller.

Lyman E-zee case gauge II cartridge length gage

Case Gauge Should Last a Lifetime
Easily measure the case length of over 70 popular rifle and pistol cases with Lyman’s new E-Zee Case Length Gauge II.

This rugged, precisely-made metal gauge makes sorting or identifying cases fast and accurate. The template is machined with SAAMI max recommended case lengths. Made from metal, with no moving parts, the E-Zee Case Gauge II should last a lifetime.

Permalink Gear Review, Reloading No Comments »
May 30th, 2014

How to Succeed at Club Matches — Six Tips

Every summer weekend, there are probably 400 or more club “fun matches” conducted around the country. One of the good things about these club shoots is that you don’t have to spend a fortune on equipment to have fun. But we’ve seen that many club shooters handicap themselves with a few common equipment oversights or lack of attention to detail while reloading. Here are SIX TIPS that can help you avoid these common mistakes, and build more accurate ammo for your club matches.

Benchrest rear bag1. Align Front Rest and Rear Bags. We see many shooters whose rear bag is angled left or right relative to the bore axis. This can happen when you rush your set-up. But even if you set the gun up carefully, the rear bag can twist due to recoil or the way your arm contacts the bag. After every shot, make sure your rear bag is aligned properly (this is especially important for bag squeezers who may actually pull the bag out of alignment as they squeeze).

Forum member ArtB adds: “To align my front rest and rear bag with the target, I use an old golf club shaft. I run it from my front rest stop through a line that crosses over my speed screw and into the slot between the two ears. I stand behind that set-up and make sure I see a straight line pointing at the target. I also tape a spot on the  golf shaft that indicates how far the back end of the rear bag should be placed from the front rest stop. If you don’t have a golf shaft, use a wood dowel.

2. Avoid Contact Interference. We see three common kinds of contact or mechanical interference that can really hurt accuracy. First, if your stock has front and/or rear sling swivels make sure these do NOT contact the front or rear bags at any point of the gun’s travel. When a sling swivel digs into the front bag that can cause a shot to pop high or low. To avoid this, reposition the rifle so the swivels don’t contact the bags or simply remove the swivels before your match. Second, watch out for the rear of the stock grip area. Make sure this is not resting on the bag as you fire and that it can’t come back to contact the bag during recoil. That lip or edge at the bottom of the grip can cause problems when it contacts the rear bag. Third, watch out for the stud or arm on the front rest that limits forward stock travel. With some rests this is high enough that it can actually contact the barrel. We encountered one shooter recently who was complaining about “vertical flyers” during his match. It turns out his barrel was actually hitting the front stop! With most front rests you can either lower the stop or twist the arm to the left or right so it won’t contact the barrel.

3. Weigh Your Charges — Every One. This may sound obvious, but many folks still rely on a powder measure. Yes we know that most short-range BR shooters throw their charges without weighing, but if you’re going to pre-load for a club match there is no reason NOT to weigh your charges. You may be surprised at how inconsistent your powder measure actually is. One of our testers was recently throwing H4198 charges from a Harrell’s measure for his 30BR. Each charge was then weighed twice with a Denver Instrument lab scale. Our tester found that thrown charges varied by up to 0.7 grains! And that’s with a premium measure.

4. Measure Your Loaded Ammo — After Bullet Seating. Even if you’ve checked your brass and bullets prior to assembling your ammo, we recommend that you weigh your loaded rounds and measure them from base of case to bullet ogive using a comparator. If you find a round that is “way off” in weight or more than .005″ off your intended base to ogive length, set it aside and use that round for a fouler. (Note: if the weight is off by more than 6 or 7 grains you may want to disassemble the round and check your powder charge.) With premium, pre-sorted bullets, we’ve found that we can keep 95% of loaded rounds within a range of .002″, measuring from base (of case) to ogive. Now, with some lots of bullets, you just can’t keep things within .002″, but you should still measure each loaded match round to ensure you don’t have some cases that are way too short or way too long.

Scope Ring5. Check Your Fasteners. Before a match you need to double-check your scope rings or iron sight mounts to ensure everything is tight. Likewise, you should check the tension on the screws/bolts that hold the action in place. Even on a low-recoiling rimfire rifle, action screws or scope rings can come loose during normal firing.

6. Make a Checklist and Pack the Night Before. Ever drive 50 miles to a match then discover you have the wrong ammo or that you forgot your bolt? Well, mistakes like that happen to the best of us. You can avoid these oversights (and reduce stress at matches) by making a checklist of all the stuff you need. Organize your firearms, range kit, ammo box, and shooting accessories the night before the match. And, like a good Boy Scout, “be prepared”. Bring a jacket and hat if it might be cold. If you have windflags, bring them (even if you’re not sure the rules allow them). Bring spare batteries, and it’s wise to bring a spare rifle and ammo for it. If you have just one gun, a simple mechanical breakdown (such as a broken firing pin) can ruin your whole weekend.

Permalink Competition, Reloading, Shooting Skills 4 Comments »