Inside of tumbler.place where?
Inside of tumbler.place where?
I have never used that powder but some powders burn cleaner than others. I usually get powder residue on the case mouth with necked cases because of where they seal when fired. If powder residue is getting clear back to the bolt face either the case is not sealing in the chamber due to low pressure or the primer pocket is leaking. The primer should have stiff resistance when seating. I use varget and the new copper removing powders. I also find the cases come out cleaner and my loads more accurate when I load near max. When working up a load I approach max at 1/2 grain incrimints till the primer showes signs of flattening or max accuracy opens up. If primer starts to flatten first I back of 1/2 to 1 grain. If this only happens on 1 or 2 cases check for hair line cracks in the case body.
Yes ^^^^. Primer was flat, and I think overbump.
I really wish i had the answer here. Now i may get flamed for this, but believe ADG saum brass has a little more case capacity than original case design which could cause problems.I don't have a gauge, but I will say that I bumped back 1thou after first firing and after this firing I remeasued and They grew another 2 thou past previous growth, making my previous bump 3 thou from this measurement. So maybe overbump is the whole issue
I don't have a gauge, but I will say that I bumped back 1thou after first firing and after this firing I remeasued and They grew another 2 thou past previous growth, making my previous bump 3 thou from this measurement. So maybe overbump is the whole issue
I really wish i had the answer here. Now i may get flamed for this, but believe ADG saum brass has a little more case capacity than original case design which could cause problems.
I had similar, or what I feel was similar in a 25 saum, using 6.5 adg brass. I was definitely getting blowback in my chamber, but not sooted case heads. And my problem started after I sized my cases for the first time, but my cases only grew .002", my bump was minimal. The only way i could shut it off was more powder, which pushed me way over 3200 fps, which I did not want.
My conclusion was adg saum brass was not for me. I shoot 7 saum also, and still have a stash of Rem brand brass from yrs ago.
If you don't have a gauge how do you know how much you bumped the case back?I don't have a gauge, but I will say that I bumped back 1thou after first firing and after this firing I remeasued and They grew another 2 thou past previous growth, making my previous bump 3 thou from this measurement. So maybe overbump is the whole issue
I think the meaning is he doesn't have a traditional headspace gauge to measure the chamber. But from his writing, he seems to have a gauge such as a Hornady to measure cases base to datum.If you don't have a gauge how do you know how much you bumped the case back?
I think the meaning is he doesn't have a traditional headspace gauge to measure the chamber. But from his writing, he seems to have a gauge such as a Hornady to measure cases base to datum.