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January 13th, 2015

Using the Giraud Power Trimmer — Smart Video from Erik Cortina

Forum member Erik Cortina recently launched his own YouTube Channel dedicated to precision reloading and accurizing. Erik’s videos demonstrate the proper use of specialized reloading tools and provide helpful hints. Erik’s latest video is about the “mother of all brass trimmers”, the Giraud powered case trimmer. Erik says: “It 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.

The Giraud trimmer is very precise. When set up correctly, it can trim brass with amazing consistency. In the video, Erik trims 5 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).

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

To trim and chamfer cases, you simply insert them nose-first into the cartridge-specific case-holder. Erick 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, Reloading, Tech Tip 8 Comments »
December 18th, 2014

SK .22 LR Rimfire Ammunition Available at Powder Valley Now

If you need rimfire ammunition, Powder Valley Inc. (PVI) just received a large shipment of SK .22 LR ammunition from Europe. This is good quality, German-made ammo, much better than the bulk-pack Federal and Winchester fodder. SK is run by the same parent company that owns Lapua. Right now the practice-grade 40gr .22LR SK Standard ammo is $5.50 per box of 50 cartridges, while the rifle Match grade ammo is $8.40 per box. Act quickly ladies and gents. This will probably sell out pretty quickly. To find this on the PVI site, click “Ammo” then “Rifle Ammo” then “Lapua”.

sk rimfire ammo ammunition powder valley

Permalink Bullets, Brass, Ammo No Comments »
December 15th, 2014

55 Rimfire Ammo Types Tested by AccurateReloading.com

We first featured this story in 2010, but the results of this rimfire ammo test have been of such widespread interest that we try to bring the test to readers’ attention every year.

In 2010, the staff of AccurateReloading.com Forum completed a massive .22LR Rimfire Ammunition Testing Project. Some 55 different types of ammo were tested, using a highly-accurate Swiss-made Bleiker rifle, with a 2-stage trigger. All ammo varieties were tested at 50 yards, 75 yards, and 100 yards, shooting five, 5-shot groups at each distance. Though these tests were completed some time ago, many readers have requested a “reprint” of the ammo rankings, so we’ve republished this data below.

The results are fascinating to say the least (and perhaps eye-opening). The tester observed: “I got some amazing groups, and some which are, frankly, absurdly bad! This has re-enforced what I had experienced with 22 ammo in the past — that is being consistently inconsistent.”

While we strongly caution that .22LR rimfire ammo may work well in one gun and not another, and ammo performance can be improved through the use of barrel tuners, the AccurateReloading.com research provides invaluable guidance for smallbore shooters. Overall, the testers burned through over 4,000 rounds of ammo, and you can see the actual test targets online. To read all the test reports, and view target photos visit AccurateReloading.com.

Bleiker .22LR Rifle

The lists below rank the average accuracy (by brand) of five, 5-shot groups shot at 50, 75, and 100 yards. CLICK HERE for Complete Test Results with target photos.

50-Yard Results 75-Yard Results 100-Yard Results
0.162 Eley Tenex Ultimate EPS
0.164 Lapua Midas Plus
0.177 Lapua Polar Biathlon
0.187 Eley Match EPS
0.193 Eley Match
0.203 Lapua Midas M
0.215 Lapua Center X
0.216 Western Value Pack
0.229 Lapua Signum
0.241 Lapua Master L
0.243 Eley Pistol Match
0.256 Olin Ball
0.256 Akah X-Zone
0.261 Lapua Midas L
0.261 Lapua Master M
0.263 Eley Tenex Semi Auto
0.270 Lapua Super Club
0.272 Eley Tenex
0.303 Lapua Standard Plus
0.312 CCI Standard Velocity
0.319 RWS R 50
0.319 Eley Standard
0.328 SK High Velocity
0.339 Eley Club Xtra
0.340 Winchester T22
0.356 Federal Champion
0.362 Eley Subsonic HP
0.371 CCI Mini Mag
0.376 Federal American Eagle
0.377 Norinco Target
0.380 Sellier & Bellot Club
0.384 Eley Club
0.387 Eley Sport
0.388 Totem
0.392 Swartklip Match Trainer
0.398 Federal Gold Medal
0.403 Swartklip HV
0.409 Eley Match Xtra Plus
0.424 Sellier & Bellot Std
0.443 Remington Target
0.461 Lapua Crow HP
0.475 Eley Silhouex
0.479 Magtech
0.498 Eley High Velocity
0.513 Winchester Super X
0.516 Kassnar Concorde
0.539 CCI Blazer
0.560 Winchester Supreme Pistol
0.576 Norinco Pistol Revolver
0.593 SK Standard
0.611 Sellier And Bellot HP
0.626 SK Standard HP
0.686 Logo HV
0.956 Pobjeda Target
0.274 Lapua Center X
0.283 Lapua Standard Plus
0.295 Eley Tenex Ultimate EPS
0.307 Lapua Midas M
0.329 Lapua Master M
0.346 Eley Match
0.373 Lapua Polar Biathlon
0.399 RWS R 50
0.432 Lapua Midas L
0.448 Eley Tenex Semi Auto
0.467 Eley Match EPS
0.474 Lapua master L
0.491 Eley Match Xtra Plus
0.494 CCI Standard
0.496 Eley Subsonic HP
0.507 Eley Sport
0.512 Federal American Eagle
0.513 SK High Velocity
0.514 Eley Standard
0.516 Eley Tenex
0.516 Lapua Crow HP
0.532 Western Value Pack
0.533 Fed. Champion Target
0.535 Lapua Midas Plus
0.564 Akah X Zone
0.566 Olin Ball
0.573 Eley Club Xtra
0.616 Lapua Signum
0.631 Winchester T22
0.639 Swartklip HV HP
0.641 Eley Club
0.642 Eley Silhouex
0.647 CCI Mini Mag
0.679 Eley Pistol Match
0.682 Swartklip Match Trainer
0.690 Federal Gold Medal
0.692 Remington HV
0.703 Lapua Super Club
0.720 Winchester Super X
0.738 Eley High Velocity
0.759 Kassnar Concorde
0.765 Sellier And Bellot Club
0.770 Winch. Supreme Pistol
0.770 Norinco target
0.775 CCI Blazer
0.802 Norinco Pistol Revolver
0.841 LVE Logo HV
0.855 Sellier & Bellot Std
0.871 Magtech
0.923 Sellier & Bellot HP
0.934 SK Standard HP
1.017 Remington Target
1.257 Totem Standard
1.442 SK Standard
1.578 Pobjeda target
0.455 Eley Match
0.510 Lapua Midas Plus
0.549 Lapua Midas M
0.611 Lapua Polar Biathlon
0.611 Eley Tenex Ultimate EPS
0.619 Eley Match EPS
0.622 Eley Club
0.630 Lapua Center X
0.631 RWS R50
0.679 Eley Tenex Semi Auto
0.694 Lapua Midas L
0.729 Eley Tenex
0.739 Lapua Master L
0.753 Lapua Super Club
0.785 Lapua Master M
0.831 Eley Sport
0.851 Eley Match Xtra
0.859 Lapua Standard Plus
0.867 Akah X-Zone
0.877 Eley Pistol Match
0.907 Norinco Target
0.924 Eley Silhouex
0.939 CCI Standard
0.952 Eley Subsonic HP
0.963 Magtech
0.970 Olin Ball
0.978 Kassnar Concorde
0.995 Eley Club Xtra
1.009 Western Value Pack
1.032 Federal Champion
1.087 Norinco Pistol Revolver
1.100 CCI Mini Mag
1.112 Lapua Crow HP
1.143 Winchester T22
1.142 Federal Gold Medal
1.144 federal American Eagle
1.156 Swartklip Hollo Point
1.165 Lapua Signum
1.170 Swartklip Match Trainer
1.175 Fed. Champion Value Pk
1.182 SK high Velocity
1.201 Totem
1.224 Winchester Super X
1.358 Eley Standard
1.367 Remington High Velocity
1.375 CCI Blazer
1.414 Eley High Velocity
1.450 Remington Target
1.504 LVE Logo
1.813 SK Standard
1.879 S&B Club
1.947 S&B Hollow Point
2.073 SK Standard HP
2.221 S&B Standard
2.266 Pobjeda Target

rimfire ammunition test

Permalink Bullets, Brass, Ammo, Tech Tip 3 Comments »
December 10th, 2014

Get Your Lapua Brass Orders in NOW Before 2015 Price Increase

Powder Valley Inc. (PVI), a leading vendor of ammo and reloading components, warned us to be prepared for price hikes on Lapua-brand cartridge brass, bullets, and loaded ammunition:

“Lapua has announced a 4-8% price increase for 2015. Anyone who would like to order at 2014 prices please do so now. We will accept backorders on all Lapua from now until December 12 and these items will be filled at 2014 prices as soon as the items become available.”

Cutting to the chase, Powder Valley is saying it will honor current Lapua prices for back-orders, so long as you place your order by December 12th, 2014. So, if you need brass (or those ultra-consistent Lapua Scenar-L bullets), order now before the price goes up. Of course, you can also buy in-stock Lapua brass/bullets inventory from PVI and other major vendors including Bullets.com, Bruno Shooters Supply, Grafs.com, and Midsouth Shooters Supply.

Permalink Bullets, Brass, Ammo 1 Comment »
December 4th, 2014

New Lapua Brass for 2015: 300 BLK, 7mm-08, 8x57mm JS

Every year we anxiously await the new product announcement from Lapua. In 2014, Lapua brought out new bullets and new cartridge brass — .221 Fireball and .50 BMG. For 2015, Lapua once again brings out new brass offerings, this time three new flavors of cartridge brass, all made to Lapua’s exacting standards. First, Lapua will introduce factory 300 AAC Blackout (300 BLK) brass. This promises to take this highly-efficient, AR-friendly .30-caliber cartridge to another accuracy level. Second, Lapua will offer premium brass for the 7mm-08 cartridge, a very popular round among hunters and silhouette shooters. Lastly, in 2015, Lapua will produce 8x57mm JS brass. That’s good news for fans of this classic Mauser cartridge.

Lapua 2015 cartridge brass casing 300 blackout blk 7-08 7mm-08 Remington 8x57mm JS 8x57

300 AAC Blackout Brass

Lapua’s Press release states: “Few cartridges have generated as much immediate interest as the 300 Blackout. Standardized by AAC, this diminutive cartridge is derived from the 223 Remington. Intended specifically for use in suppressed firearms, the versatility of the Blackout has appealed to a much broader range of shooters than just the audience for which it was originally designed. [Originally] intended to drive 220 grain bullets at subsonic velocities, the switch to lightweight bullets such as the 125 grain offerings delivers performance very similar to the venerable 7.62×39 cartridge. This makes the 300 Blackout potent enough for a wide range of shooting tasks, from certain tactical applications to many short range hunting situations involving medium-sized game. The ability for many 5.56mm/223 systems to be switched over to the 300 Blackout, merely by changing barrels, makes this an incredibly versatile combination. Lapua brings over nine decades of case manufacturing knowledge, precision and quality to the new Blackout, assuring the shooter of the very best performance.”

Lapua 2015 cartridge brass casing 300 blackout blk 7-08 7mm-08 Remington 8x57mm JS 8x57

7mm-08 Remington Brass

Lapua 2015 cartridge brass casing 300 blackout blk 7-08 7mm-08 Remington 8x57mm JS 8x57Lapua notes that it’s new 7mm-08 brass is made to very high standards, benefiting hunters as well as competitors: “The 7mm-08 came to dominate the High Power Silhouette rifle game shortly after its introduction, offering a superb combination of power, light recoil and accuracy. Since then, it has also been used to win National Championships in High Power competition, and become a staple for hunters as well. With ballistic performance exceeding that of the time honored 7x57mm Mauser, but suited to a shorter action, the 7mm-08 is an ideal cartridge for most big game hunting. Lapua brings… state-of-the-art manufacturing methods, combined with old world craftsmanship, to the production of these cases. Primer pockets and flash holes are held to strict tolerances to withstand repeated firings and reloadings. After final necking of the case, they are finished with the proper anneal [for] accuracy and durability.” Lapua also notes that it offers two new 7mm Scenar bullets, which will work very well in the new 7mm-08 cartridge brass.

8x57mm JS Brass

Last but not least, Lapua is producing 8x57mm JS brass. Lapua notes that: “When the 8x57mm JS cartridge was introduced in 1905, its innovative use of a high velocity and relatively light weight pointed bullet design revolutionized infantry combat. An outgrowth on the original 8x57J military round, the 8x57mm JS round served the German military in both world wars, and became a popular sporting cartridge in any area where there was a strong German influence. From African plains game to European stag and boar, the 8mm Mauser has earned an enviable reputation as a big game round in a wide array of conditions. Accurate, versatile and powerful, the 8x57mm JS still serves the sporting community well for a host of hunting applications. In answer to the requests of the many devotees of this fine cartridge, Lapua is pleased to announce our introduction of the new 8x57mmJS case. The new 8x57mmJS will deliver the same accurate, reliable performance for which Lapua cases are world renowned. This means tough, durable cases that will not only withstand repeated loadings, but retain their accuracy shot after shot. [Lapua’s 8x57mm JS brass offers] very tight tolerances in neck wall concentricity and overall uniformity.”

Lapua 2015 cartridge brass casing 300 blackout blk 7-08 7mm-08 Remington 8x57mm JS 8x57

See Lapua’s New Products at SHOT Show 2015
If you plan to attend SHOT Show in Las Vegas, stop by and visit the Lapua Exhibit (booth #11929). With luck, samples of the new 7mm-08, 300 BLK, and 8×57 JS brass will be available to view. Lapua engineers will be on hand to talk about Lapua brass and bullets, and explain the production processes that make Lapua brass so durable and consistent. In recent years, in the world of centerfire competition, Lapua brass has absolutely dominated the winner’s circles as well as the record-books.

Permalink Bullets, Brass, Ammo, New Product 16 Comments »
October 31st, 2014

CMP Offers High-Quality .30-06 Ammo from Creedmoor Sports

NEW PRODUCT REPORT by Dennis Santiago
At the recent Western CMP Games and Creedmoor Cup Matches in Phoenix, I received a box of the all-new .30-06 Match-Grade ammunition from Dennis DeMille of Creedmoor Sports. My job was to test the ammo (at the Games) and write about it. This box was part of Creedmoor’s 3-million-round production run for the Civilian Marksmanship Program (CMP). CLICK HERE for Ammo Sales.

Author Dennis Santiago (right) with Dennis Demille of Creedmoor Sports (left).
Creedmoor .30-06 ammo

The new .30-06 “Match-Grade” ammunition from Creedmoor is impressive. This ammo is made from top-quality components: brand new Lapua .30-06 brass and 167gr Lapua Scenar bullets. The ammo, optimized for 200-yard CMP Games tournaments, runs at 2720 fps. DeMille says the Standard Deviation (SD) is very tight with this ammo — comparable with precision hand loads. The low SD reflects great attention to detail in ammo assembly. Creedmoor’s industrial loader is run at half-speed to improve consistency. Charges are thrown precisely — I believe in two (2) half-charges.

Creedmoor .30-06 ammo

When you hold the ammunition up to the light, each round appears a perfect clone of each other round — something that cannot be said for some other factory ammo (even so-called “match ammo”). This is about a close as one is likely to get to a precision hand load. The good news is that Creedmoor plans to produce similar ammunition in other chamberings.

The economics of the ammunition are equally intriguing. This ammo is being sold by the CMP for $1.30 per round. Think about that — new .30-06 Lapua brass sells for around $100.00 per hundred cases. So, you get to fire a precision match round for about 30 cents and have premier once-fired brass for future use. The price per rounds tells me that CMP isn’t making money on this — it is being sold at near cost to promote marksmanship.

Great Ammo at a Great Price
In offering this new .30-06 ammo at an affordable price, the CMP is making it possible for non-reloading competitors to have the same quality of ammunition as those who handload with premium components. This will be a major improvement for shooters of m1903s and M1 Garands. I think this ammo can be real equalizer for those who do not currently hand-load their own .30-06 ammunition. The CMP and Creedmoor Sports are to be commended for collaborating on this game-changing product introduction.

Where to get the Creedmoor Sports CMP .30-06 Ammo
The CMP is now selling the Creedmoor-produced .30-06 ammo on the CMP website, item #4C3006CS167-100 (click the “e-Store” button to launch shopping cart). The retail price is $130.00 per 100-round case (i.e. two boxes). That works out to $1.30 per round.*

Creedmoor .30-06 ammo

.30-06 Ammo Performance
When someone hands you a box of ammo with a challenge how can you not throw all your match plans out the door and play? I was planning to fire the CMP GSM match with my M-1 Garand the next day using 150gr SMK handloads but I said, “What the heck. Let’s go for it.” You get five sighters in a GSM match which is plenty to zero with new ammo.

The ammo is optimized for shooting 200-yd CMP matches with rifles like my as-issued DCM M-1 Garand.
Creedmoor .30-06 ammo

I shoot the M-1 Garand matches with a rebuilt 5-digit receiver gun with a 1950s barrel refurbished at Anniston Armory that I got from the DCM back in the day when the postman delivered them. It shoots true and has garnered its share of Western Games trinkets over the years including a number of golds and one of those coveted M-1 EIC 4 points medals. It’s a good platform for the test. Sighters revealed the Creedmoor ammo shoots about two minutes higher impact versus my pet load. The tale of the tape said 96-2X slow prone, 93-1X rapid prone and 81-1X offhand totaling 270-4X. The DCM machine took home a bronze in 2014.

Accuracy and Consistency
This Creedmoor ammo is indeed amazingly consistent. The slow prone stage was a pure joy to shoot. This ammunition is “brutally honest”. It will reveal every little error you make be it defocusing on your front sight drenching in sweat under the Phoenix sun, not being fast enough to reset your NPA mid-string in your rapid as the big gun moves you around or just being jittery on your feet during the back half of your offhand. With this ammo I felt confident to trust that any error was mine after each shot. There was no wondering about the ammo. I knew its feedback was accurate. That is a huge thing to be that confident in one’s gun and ammunition. I never felt that confident with HXP or even my handloads. If anything, I now know that even my ammo for the M1 Garand and M1903A3 will benefit from the same careful case preparation and assembly as my tactical rifle or long range ammo.


*At the Western CMP Games this Creedmoor .30-06 ammo was sold at a discounted price of $1.15 per round. That’s an example of the great deals one can get by attending CMP competitions.

Permalink Bullets, Brass, Ammo, New Product No Comments »
September 30th, 2014

Lapua .308 Win Brass on Sale at Bullets.com

Do you shoot a .308 Winchester (and who doesn’t)? Well here’s a great deal on Lapua .308 Win brass, the best you can buy. Ultra-consistent, Lapua brass stays strong for many reloading cycles, even with stout loads. Lapua is the choice of most F-TR competitors who shoot the .308 Win in competition.

The .308 Win Palma version brass (item BL11071) features small primer pockets. Some people believe the small primer pockets help the cases deliver a lower Extreme Spread (ES) and (maybe) withstand high pressures for more loading cycles. YMMV, but we do like the small-primer-pocket .308 Win Lapua brass and it’s our first choice for target applications.

Lapua .308 Win Brass

Both types of Lapua .308 Winchester brass are now available at very attractive prices from Bullets.com: $61.95 for large primer pocket brass, $69.95 for small pocket brass. This cartridge brass is in stock today and ready to ship. CLICK HERE to order.

10/1/2014 Update: Sale Inventories of the Small Primer Pocket .308 Win Palma brass are sold out. You can still buy this brass, but the regular price is $79.95 per 100 cases.

Permalink Bullets, Brass, Ammo, Hot Deals 1 Comment »
July 24th, 2014

Kevin Nevius of Team Lapua Wins Smallbore Prone Championship

Story based on report by Lars Dalseide for NRABlog.com
Kevin Nevius is the 2014 NRA smallbore prone National Champion. It’s not the first time Nevius has won the NRA Smallbore Prone Rifle crown. A phenomenal prone shooter, Nevius has now secured multiple National Titles. That may be surprising notion given Kevin’s relatively late start in the sport of competitive shooting.

kevin nevius Lapua rimfire, smallbore championship

“My brother got me into long range varmint hunting and I started building my own guns very early,” Nevius told Dan Holmes in an earlier Pronematch.com interview. “I had a hunting friend who shot indoor smallbore who started me in three position and I was hooked.”

With a practically perfect score of 4799-390X, Nevius beat out second and third place shooters by two points … on the final day of the Conventional Championships. The 2014 NRA National Smallbore Rifle Championships wrap up this weekend with Metric Prone. Will we have another new 2014 smallbore champion or will there finally be a repeat? Stay Tuned.

kevin nevius Lapua rimfire, smallbore championship

Kevin Nevius, 2014 Smallbore Prone National Champion

“He showed his steel,” said Assistant Match Director Victoria Croft. “On the last day, the final relay, when it really counted, he didn’t miss a shot.”

kevin nevius Lapua rimfire, smallbore championship

Kevin Nevius file photo from Southeastern Michigan Northern Ohio High Masters Shooting Club.

Permalink Competition 5 Comments »
June 1st, 2014

How Cartridge Brass is Made — The Inside Scoop

When we first ran this story a while back, it generated great interest among readers. By popular request, we’re reprinting this story, in case you missed it the first time around. — Editor

Rifle cartridge brass manufacturingPrecision shooters favor premium brass from Lapua, Norma, or RWS. (Lake City also makes quality brass in military calibers.) Premium brass delivers better accuracy, more consistent velocities, and longer life. Shooters understand the importance of good brass, but many of us have no idea how cartridge cases are actually made. Here’s how it’s done.

The process starts with a brass disk stamped from strips of metal. Then, through a series of stages, the brass is extruded or drawn into a cylindrical shape. In the extrusion process the brass is squeezed through a die under tremendous pressure. This is repeated two or three times typically. In the more traditional “draw” process, the case is progressively stretched longer, in 3 to 5 stages, using a series of high-pressure rams forcing the brass into a form die. While extrusion may be more common today, RWS, which makes some of the most uniform brass in the world, still uses the draw process: “It starts with cup drawing after the bands have been punched out. RWS cases are drawn in three ‘stages’ and after each draw they are annealed, pickled, rinsed and subjected to further quality improvement measures. This achieves specific hardening of the brass cases and increases their resistance to extraordinary stresses.” FYI, Lapua also uses a traditional draw process to manufacture most of its cartridge brass (although Lapua employs some proprietary steps that are different from RWS’s methods).

RWS Brass Cartridge Draw process

Deep-Draw Ram Illustration from Demsey Mfg.
deep draw cartridge brass animated gif

After the cases are extruded or drawn to max length, the cases are trimmed and the neck/shoulder are formed. Then the extractor groove (on rimless cases) is formed or machined, and the primer pocket is created in the base. One way to form the primer pocket is to use a hardened steel plug called a “bunter”. In the photos below you see the stages for forming a 20mm cannon case (courtesy OldAmmo.com), along with bunters used for Lake City rifle brass. This illustrates the draw process (as opposed to extrusion). The process of draw-forming rifle brass is that same as for this 20mm shell, just on a smaller scale.

20mm cartridge brass forming

20mm Draw Set Oldammo.com

River Valley Ordnance explains: “When a case is being made, it is drawn to its final draw length, with the diameter being slightly smaller than needed. At this point in its life, the head of the draw is slightly rounded, and there are no provisions for a primer. So the final drawn cases are trimmed to length, then run into the head bunter. A punch, ground to the intended contours for the inside of the case, pushes the draw into a cylindrical die and holds it in place while another punch rams into the case from the other end, mashing the bottom flat. That secondary ram holds the headstamp bunter punch.

Lake City Brass bunter

The headstamp bunter punch has a protrusion on the end to make the primer pocket, and has raised lettering around the face to form the headstamp writing. This is, of course, all a mirror image of the finished case head. Small cases, such as 5.56×45, can be headed with a single strike. Larger cases, like 7.62×51 and 50 BMG, need to be struck once to form a dent for the primer pocket, then a second strike to finish the pocket, flatten the head, and imprint the writing. This second strike works the brass to harden it so it will support the pressure of firing.”

Thanks to Guy Hildebrand, of the Cartridge Collectors’ Exchange, OldAmmo.com, for providing this 20mm Draw Set photo. Bunter photo from River Valley Ordnance.

Permalink Bullets, Brass, Ammo, Tech Tip 3 Comments »
May 22nd, 2014

0.40x” at 600 Yards — Schatz Shoots Small (Amazingly Small)

Richard Schatz, the “Duke of Dashers”, has done it again. Just look at that group! Believe it or not, that is five shots at 600 yards. There are four shots in one ragged hole, with one a bit to the right. The group, initially measured at between 0.402″ and 0.410″, is very close to an IBS World Record. Assuming (on the high side) that that group measures 0.410″, that works out to 0.065 MOA. Wow.

Richard Schatz IBS 600-yard record .40

Richard Schatz IBS 600-yard record .40

Schatz, a past IBS 600-yard National Champion, shot this group in a Heavy Gun relay on May 18, 2014 at the Columbus Sportsman’s Association range in Columbus, Wisconsin. Richard was using his trusty 6mm Dasher, a 17-lb Light Gun that he has been shooting for years. His ultra-accurate load consisted of 103gr Spencer Bullets pushed by Varget and CCI 450 primers. The Lapua brass had recently been annealed and he batched his record rounds “by feel” based on the force needed to seat the bullets.

Richard Schatz IBS 600-yard record .40

Richard said the group involved a good bit of luck, and perfect timing. The conditions were generally “switchy and difficult” at the match. However, in one Heavy Gun relay, Richard said “the wind flags just dropped straight down at the end of the sighter period. It’s like the range went dead.” Richard had windage on his scope so he just held off to correct for the calm. “I didn’t guess the hold-off correctly”, Richard admitted, “that’s why the shots ended up at the edge of the 9 Ring.”

Twenty Seconds of Near-Perfect Shooting
Richard got his five record rounds down range in about 20 seconds. He can shoot faster but, given the exceptional conditions, he took a little more time to aim: “Because the flags dropped and conditions stayed calm, I slowed down a little. I made more of a deliberate attempt to shoot a small group — a conscious effort to aim more precisely. Normally I’ll try to shoot the quickest I can get the dot close to the center of the X. I was trying to be a little more precise this time.”

Whatever Richard did, it sure worked. That’s a spectacular group — one of the smallest ever shot at 600 yards. Richard, a modest guy, credited the group to good conditions, and good luck: “Like I always say ‘the wind can blow ‘em in just as easy as it blows ‘em out’.” Richard says this rifle, with the current Krieger barrel, can typically put five shots in about two inches at 600 yards, in calm, stable conditions.

Richard Schatz IBS 600-yard record .40

Very Close to an IBS Heavy Gun Record
The current IBS 600-yard, five-shot Heavy Gun group record is 0.404″, set by John Lewis in 2008. This recent group by Richard Schatz is very, very close to that mark. At Columbus, Wisconsin, four different measurers examined Richard’s group on May 18th. The four measurements were: 0.402″, 0.403″, 0.410″, and 0.409″ (see photo). Whether or not this is a new record will be determined by the IBS official measurement committee to which the target is being submitted. It’s worth mentioning that Richard Schatz currently holds the IBS 600-yard Heavy Gun score record, with a value of 50 points (and 0.634″ tie-breaker).

Richard Schatz IBS 600-yard record .40

Rifle Specifications:
Nesika Action
Krieger 1:8″ twist barrel, 27″ length, 0.236″ bore
Chambered for 6mm Dasher with 0.272″ neck
and 0.104″ Freebore
Shehane “Baby Tracker” stock
Nightforce 8-32x56mm NSX Scope
Load Specifications:
Clay Spencer 103gr bullets
Lapua 6mmBR brass (formed to Dasher)
Cases skim-turned for .0035 total clearance
Hodgdon Varget powder, 32.2 grains
CCI 450 primers
Muzzle Velocity 2980 FPS

Richard Schatz IBS 600-yard record .40

Permalink Competition, News 4 Comments »
May 9th, 2014

How Hard is Your Brass? 5.56 and .223 Rem Base Hardness Tests

Lake City vs. Lapua — which brass is harder? And how about Remington vs. Winchester? Is the widely-held belief that Win brass is harder than Rem brass really true? To help settle these burning questions (raised in a Forum thread), Forum member Catshooter recently sampled the base hardness of four brands of .223/5.56 brass. He employed a very impressive tool for the task — a $2,500 Ames Hardness Gauge. Catshooter explained that his Ames Guage “is FAA certified and approved for testing aircraft engine parts — it does NOT get any better than that!”

Catshooter measured four cases picked at random from batches of Lake City (LC) 2008 (5.56x45mm), Lapua .223 Rem Match, Winchester .223 Rem, and Remington R-P .223 Rem.

Lake City Lapua Match Winchester Remington

Photo Shows Ames Gauge Base Hardness Measurement on Lake City Brass
.223 Remington Lake City Brass Hardness Lapua Winchester 5.56x45

Photo Show Ames Gauge Base Hardness Measurement on Winchester Brass
.223 Remington Lake City Brass Hardness Lapua Winchester 5.56x45

TEST RESULTS
Using Rockwell hardness standards (.062″x100kg, Rockwell “B”), the brass measured as follows:

LC 2008 = 96

Lapua 223 Match = 86

Winchester 223 = 69

Remington “R-P” = 49

Summary of Test Results
Catshooter writes: “For all you guys that have believed that Winchester cases were tougher than Remington — you are vindicated, they are a lot tougher! However, Lake City and Lapua are ‘the pick of the litter'”. Catshooter notes that both Lake City and Lapua are significantly harder than either Winchester and Remington .223 brass. That’s something that we’ve observed empirically (Lapua and LC stand up better to stout loads), but now we have some hard numbers to back that up. Hats off to Catshooter for settling the hardness debate with his Ames Hardness Gauge.

Permalink Bullets, Brass, Ammo, Reloading 13 Comments »
May 8th, 2014

Lapua Scenar-Ls are Ultra-Consistent — Free Lapua Hat

Lapua’s Scenar-L bullets are extremely consistent in weight and dimensions. In our tests, the 6mm 105gr Scenar-L proved to be as uniform in weight and base-to-ogive length as any factory bullet we’ve ever measured. Scary consistent. Now there is a full line-up of Scenar-L bullets in .224, 6mm, 6.5 mm, 7mm, and .308 calibers. Yes, that’s right, Lapua now makes a 7mm match bullet. In fact, Lapua makes two: a 150-grainer and a big, high-BC, 180-grainer.

All these Scenar-L bullets are carried by Grafs.com. There are good supplies in most calibers, but the 7mm 180s (item LU4PL7401) are nearly sold out, and the 6mm 105-grainers are sold out. More of these popular 6mm and 7mm projectiles should arrive later this summer.

FREE HAT with Lapua Purchase

For a limited time, if you purchase Lapua bullets, brass, or loaded ammo from Grafs.com, you can get a FREE Lapua cap. NOTE: Quantities are limited, and this offer is restricted to one per customer.

Lapua bullets hat brass grafs

In the above video, Peder Mørch Pedersen demonstrates the accuracy of Scenar-L bullets in a Blaser R8 GRS rifle chambered in 6mmBR Norma. Peder was shooting from bipod at 300 meters on a sunny day in Vingsted, Denmark.

Permalink Bullets, Brass, Ammo, Hot Deals 2 Comments »