Do you have a hankering to shoot Extreme Long Range (ELR)? Then you’ll want a large-caliber cartridge with plenty of boiler room. Some of the most successful ELR cartridges have been based on the CheyTac family, including the .375 CheyTac (9.5×77) and .408 CheyTac (10.36 x 77). Now brass for both these jumbo cartridges is offered by Peterson Cartridge. This Peterson Cheytac brass has proven to be tough and long-lived. And it is capable of winning — Derek Rodgers won the 2017 King of 2 Miles (K02M) event shooting a .375 Cheytac with Peterson brass. Here’s a report on how Peterson developed and tested its tough CheyTac cartridge brass.
Developing and Testing CheyTac Brass
Report by Peterson Cartridge Co.
Our president, Derek Peterson, has live-tested our most recent iteration of the .375 CheyTac (aka 9.5 X 77). He started with five casings, and did a full-body resizing after each firing. He got 17 firings out of each before he started to notice the early signs of case head separation. [Editor: Theses were with extremely high pressure loads.] He then took another set of casings and after each firing he just bumped the shoulder back, like a typical reloader would. He got 20 firings out of those casings.
Note: CheyTac® is a registered trademark of CheyTac USA, LLC. Peterson Cartridge has no affiliation.
Low MV Extreme Spread
On the first two shots the muzzle velocities were within 12 feet per second of each other. On the 3rd and 4th shots the muzzle velocities were within 6 feet per second of each other. By the 5th shot the muzzle velocities were within 1 foot per second of each other. Now that is how you can put two bullets in the same hole down range.
No SAAMI Spec for CheyTac Cartridges
As many of you probably already know there is no SAAMI spec on these calibers. So, without a SAAMI spec there is no stated maximum pressure for a service load. However, there IS an international spec on the .408 [promulgated by the] CIP (Commission International Permanente). And the CIP max pressure for this round is extremely high. Our partner in Europe tells us it is probably unnecessarily high. Our partner loads these rounds and they have a standard load for the .375s which is also quite high. So that is the pressure we did our testing at. To even achieve that pressure, we had to use a compressed load. We are explaining all this to say that you [should not use] a load that hot, and therefor you will most likely get more reloads than we did[.]
Peterson Brass Goes Through 11 Dimensional Tests
With all the casings we make in any caliber, we perform a battery of in-process, real-time dimensional checks. [We test] 11 different dimensions continuously throughout each shift. Some of these are tube cylindricity, mouth to body concentricity, primer pocket diameter, length to shoulder, overall length, and more. These measurements are automatically fed into Statistical Process Control software. If a dimension begins to drift from nominal we can catch it immediately and correct it.
Peterson is Fully Committed to CheyTac Brass Production
Peterson Cartridge purchased additional manufacturing equipment designed specifically to produce these large casings. Our capacity is 5-million casings a year. We are committed to there not being a shortage of these calibers ever again.
Derek Rodgers is the 2017 King of 2 Miles. He is also the first-ever human to ever hit the maximum distance target target at 3368 yards (1.91 miles) in competition. His cartridge choice? The .375 CheyTac. Derek ran Cutting Edge Bullets in Peterson brass with Hodgdon H50BMG powder.
Q: Why did you choose the .375 CheyTac cartridge?
Derek: When I was asked to join the Applied Ballistics Team, I needed to get an ELR rifle built in a short period of time. I was under a very tight time schedule to get the project complete. In an effort to eliminate variables, I decided to keep things standard and as simple as possible. I chose the .375 CheyTac for the ease of getting components. The larger rifles are more difficult to get components quickly and I felt like the .375 CheyTac had enough attributes to be competitive at ELR distances.
Product Tip from EdLongrange. We welcome reader submissions.
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First there were books, then Videos/DVDs, then Ballistic Apps, then Seminars, and now Applied Ballistics is moving into the gun-building business. Founded by Ballistics guru Bryan Litz, Applied Ballistics LLC has been a world leader in the science of ballistics for the shooting sports. Now Applied Ballistics is using its expertise to produce complete rifle systems capable of world-beating Extreme Long Range performance.
Applied Ballistics Weapons Division Will Offer Complete Tactical ELR System
Applied Ballistics Weapons Division (ABWD) states: “We have the capability to build you a custom rifle, with ammo matched for that system. We can test the ammo and rifle combination over Radar in the lab. ABWD [will be] offering a complete system, with a CDM specific to that rifle. The first rifles are purpose built for 2500+ yard engagements.”
Based on the “teaser” video above, ABWD will offer a complete rifle system featuring Nightforce riflescope, ELR optical prism, laser rangefinder, Kestrel wind meter, and ammo that has been tuned for the rifle and trajectory-verified with Doppler Radar. This promises a “turn-key” system with sub-MOA 1000-yard accuracy plus hit capability at ranges out to 2500+ yards.
One Facebook reader asked: “Will you focus your rifle builds to just Extreme Long Range or will you be doing PRS-style type rifles as well?
AB states: “We are starting out with this ELR system, but will be offering more systems in the near future, as well as custom rifle builds. Stay tuned as the ABWD website should be up soon!”
Many Questions about ABWD’s New Products:
Of course, like our readers, we have many questions about this new project:
1. What cartridge types will be available in ABWD Rifles?
2. What companies will supply the rifle actions and chassis systems?
3. Who will supply the barrels and what are length/chambering options?
4. Will ABWD rifle systems be offered to the general public (vs. military/LEO)?
5. When will the first ABWD rifle systems be available?
And last but not least…
6. What will these ABWD ELR Rifles cost, both by themselves and as a complete package (with solvers, LRFs, optics etc.)?
News Tip from EdLongrange. We welcome reader submissions.
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An American shooter has hit a 40″ square steel target at a distance of 5000 yards (2.84 miles). This has been hailed as a New Long Range World Record. That’s quite a feat… except that it took thirty-seven (37) shots to put one .408-caliber bullet on the steel target (by a whisker). Is that really good shooting — or just a lucky impact? (The 37th shot just barely hit the right side of the 40″ x 40″ steel plate). This purported “Long Range World Record” was shot on September 30, 2017.
Should we acknowledge this as a meaningful record? Is this a noteworthy achievement or just a stupid stunt? Watch this video and decide for yourself:
ELR at 5000 Yards — World Record or Just a Lucky Shot?
The Firearm Blog explained: “After shooting through three [10-round] batches unsuccessfully, Charlie Melton connected on target with his 7th shot in the fourth batch; round number 37. According to some number crunching … the bullet that finally connected on target was likely in flight for 12.816 seconds!”
Can this lucky shot really be claimed as some kind of meaningful record? Our friend Dennis Santiago, a Service Rifle competitor, and very brainy guy, observed: “Ha! 37th shot works out to a 2.7% probability of hit single-shot. That figure … fails the test of operational viability. Any hits are incidental within the beaten zone. It’s a gimmick.”
And William W., a retired military ordnance specialist, stated: “Dispersion and random Circular Error Probable (CEP) says if you fire enough shots, you will eventually hit what you are aiming at. It could have taken one shot or one hundred or more. Do the math for a radial error of .05 MOA at 15,000 feet and see what comes up. This is what we call ‘hardstand dispersion’ which only accounts for the gun and ammunition bias. Add environmental factors and CEP gets much bigger. A true test is a series of shots that strike the target, not a holy poke.”
Shot Made with Armalite AR-30 Fitted with 31″ Barrel Chambered for .408 Tejas
The lucky shot (37th attempt) was made by former SEAL Charlie Melton of Charlie Mike Precision. He was shooting an Armalite AR30 rifle with 31″ Pac-Nor barrel chambered for the .408 Tejas, a 50° wildcat based on the .408 Cheytac cartridge. The bullets were 420 grain solids launched at 3065 FPS.
Rifle: Armalite AR-30, with 6 oz. Jewell trigger
Barrel: 31″ Pac-Nor chamber for .408 Tejas
Bullet: 420 Grain Monolithic (solid) Bullets – 3,065 FPS
Bi-Pod: Shots Gunsmithing Bipod for Armalite AR-X
Optic: Nightforce NXS 12-45x56mm fitted with Charlie TARAC Prism (see below)
Rings: Ivey Adjustable Scope Rings
Photo by Brad Stair of Performance Guns
Innovative Elevation Booster — Charlie TARAC Prism System
The Charlie TARAC Prism from TACOMHQ helps ELR Shooters hit very distant targets, by elevating the actual target image, effectively augmenting the scope’s internal elevation adjustment. The latest TARAC is an adjustable unit that adds up to 120 MIL of elevation to any scope. Current high-end scopes typically offer around 30 MIL of vertical. With the Charlie TARAC fitted to the scope’s front objective, you can add +120 MIL elevation.
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Do you have a hankering to shoot Extreme Long Range (ELR)? Then you’ll want a large-caliber cartridge with plenty of boiler room. Some of the most successful ELR cartridges have been based on the CheyTac family, including the .375 CheyTac (9.5×77) and .408 CheyTac (10.36 x 77). Now brass for both these jumbo cartridges is offered by Peterson Cartridge. This Peterson Cheytac brass has proven to be tough and long-lived. And it is capable of winning — Derek Rodgers won the 2017 King of 2 Miles (K02M) event shooting a .375 Cheytac with Peterson brass. Here’s a report on how Peterson developed and tested its tough CheyTac cartridge brass.
Developing and Testing CheyTac Brass
Report by Peterson Cartridge Co.
Recently, our president, Derek Peterson, was live-testing our most recent iteration of the .375 CheyTac (aka 9.5 X 77). He started with five casings, and did a full-body resizing after each firing. He got 17 firings out of each before he started to notice the early signs of case head separation. [Editor: Theses were with extremely high pressure loads.] He then took another set of casings and after each firing he just bumped the shoulder back, like a typical reloader would. He got 20 firings out of those casings.
Note: CheyTac® is a registered trademark of CheyTac USA, LLC. Peterson Cartridge has no affiliation.
Low MV Extreme Spread
On the first two shots the muzzle velocities were within 12 feet per second of each other. On the 3rd and 4th shots the muzzle velocities were within 6 feet per second of each other. By the 5th shot the muzzle velocities were within 1 foot per second of each other. Now that is how you can put two bullets in the same hole down range.
No SAAMI Spec for CheyTac Cartridges
As many of you probably already know there is no SAAMI spec on these calibers. So, without a SAAMI spec there is no stated maximum pressure for a service load. However, there IS an international spec on the .408 [promulgated by the] CIP (Commission International Permanente). And the CIP max pressure for this round is extremely high. Our partner in Europe tells us it is probably unnecessarily high. Our partner loads these rounds and they have a standard load for the .375s which is also quite high. So that is the pressure we did our testing at. To even achieve that pressure, we had to use a compressed load. We are explaining all this to say that you [should not use] a load that hot, and therefor you will most likely get more reloads than we did[.]
Peterson Brass Goes Through 11 Dimensional Tests
With all the casings we make in any caliber, we perform a battery of in-process, real-time dimensional checks. [We test] 11 different dimensions continuously throughout each shift. Some of these are tube cylindricity, mouth to body concentricity, primer pocket diameter, length to shoulder, overall length, and more. These measurements are automatically fed into Statistical Process Control software. If a dimension begins to drift from nominal we can catch it immediately and correct it.
Peterson is Fully Committed to CheyTac Brass Production
Peterson Cartridge purchased additional manufacturing equipment designed specifically to produce these large casings. Our capacity is 5-million casings a year. We are committed to there not being a shortage of these calibers ever again.
Derek Rodgers is the 2017 King of 2 Miles. He is also the only human to ever hit the maximum distance target target at 3368 yards (1.91 miles). His cartridge choice? The .375 CheyTac. Derek ran Cutting Edge Bullets in Peterson brass with Hodgdon H50BMG powder.
Q: Why did you choose the .375 CheyTac cartridge?
Derek: When I was asked to join the Applied Ballistics Team, I needed to get an ELR rifle built in a short period of time. I was under a very tight time schedule to get the project complete. In an effort to eliminate variables, I decided to keep things standard and as simple as possible. I chose the .375 CheyTac for the ease of getting components. The larger rifles are more difficult to get components quickly and I felt like the .375 CheyTac had enough attributes to be competitive at ELR distances.
Product Tip from EdLongrange. We welcome reader submissions.
Share the post "Tough Brass for Big Ammo — Cheytac Brass from Peterson"
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