02-21-2024, 02:18 PM
Was this resolved?
Again late to the party...
Cracking cases are almost always work hardened. But I read annealing was done. Are you properly annealing? (Not to insult) But like anything in life improperly done correct things can still be wrong. Just like "brand new" dosent mean right or correct all the time.
Also ARC cases are shorter. Are these trimmed correctly as this can cause issue too.
I have formed cases for a dozen calibers and ONLY time I battled cracking was when I had annealing issues or bad old unknown history brass.
As for "belting" this is generally because that case was either:
1) severely over pressured.
2) Shot in a "fat chamber. Or BOTH.
I just went thru about two hundred 7.62x39 cases. (Brass) Fired from a Mini Mauser bolt and SKS rifle some 30 years ago. I know because they cane from a old friend and thats the rifles he had. I got about 125/130 good formed pieces to 6arc. (Some twenty casualities, were my fault battling multiple issues at start.) Once sorted the process went very smooth. Now I just need fire form them. They will serve as my break in ammo.
CW
Again late to the party...
Cracking cases are almost always work hardened. But I read annealing was done. Are you properly annealing? (Not to insult) But like anything in life improperly done correct things can still be wrong. Just like "brand new" dosent mean right or correct all the time.
Also ARC cases are shorter. Are these trimmed correctly as this can cause issue too.
I have formed cases for a dozen calibers and ONLY time I battled cracking was when I had annealing issues or bad old unknown history brass.
As for "belting" this is generally because that case was either:
1) severely over pressured.
2) Shot in a "fat chamber. Or BOTH.
I just went thru about two hundred 7.62x39 cases. (Brass) Fired from a Mini Mauser bolt and SKS rifle some 30 years ago. I know because they cane from a old friend and thats the rifles he had. I got about 125/130 good formed pieces to 6arc. (Some twenty casualities, were my fault battling multiple issues at start.) Once sorted the process went very smooth. Now I just need fire form them. They will serve as my break in ammo.
CW