I am going to pick up some Alpha brass for a 6.5 Creedmoor AR10. It seems in a bolt rifle you may not want to run a small primer without a small firing pin. What about an AR10? Should i get the small primer or large primer version?
Brass for 6.5 Creedmoor AR10
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With the way semi beat up brass I've havent found any reason to switch from Hornady. Cheap and run great. Prime would be my only other choice. I wouldn't want to run Lapua or anything of similar price, it's just not necessary.
I've had good luck so far with Starline 6.5 brass with a small rifle primer pocket in my AR10. I also have a JP enhanced bolt with a smaller firing pin in that gun. The Starline brass is also not as expensive as Alpha and Lapua.
https://www.starlinebrass.com/brass-cases/SR-65CM/
https://www.starlinebrass.com/brass-cases/SR-65CM/
As mentioned earlier, the AR10 can be hard on brass. I like running hornady or kinetic as it is same price but wayyy thicker in my gas gun. Petersons and alpha for bolt guns. FYI kinetic I've found to be good brass especially for price, but had to completely redo my load.
Most will not want to do this because of the work involved. But I have 5000pcs+ of LE non belt fed 1x LC 7.62 brass someone gave me. I converted 500pcs to 6.5cm to test in my semi since its much nicer, heavier brass and I dont own any 308's anymore. I had to change my load going down .5gr but this stuff is awesome. Just got my new barrel in my semi and had it out testing today. Shooting tight groups and brass looks great.
1. Deprimed
2. SS tumbled
3. Annealed
4. Shoulder bumped back .003 from fired case headspace with expander ball removed
5. Expander Mandrel to set .0025 neck tension
6. Neck turned to 0.135"
Formed vs Fired
Primers nice and round, no pressure
Not a mark on the case head (this also is due to +2 gas, correct gas port size, HP bolt and properly tuned JP SCS Heavy)
15 shots @ 100 yds - 42.5g H4350 130 ELD-M BR2 2799 SD 5.6 (not bad for fireforming)
1. Deprimed
2. SS tumbled
3. Annealed
4. Shoulder bumped back .003 from fired case headspace with expander ball removed
5. Expander Mandrel to set .0025 neck tension
6. Neck turned to 0.135"
Formed vs Fired
Primers nice and round, no pressure
Not a mark on the case head (this also is due to +2 gas, correct gas port size, HP bolt and properly tuned JP SCS Heavy)
15 shots @ 100 yds - 42.5g H4350 130 ELD-M BR2 2799 SD 5.6 (not bad for fireforming)
