If one wanted to use premium quality norma .270win brass to make ..280 AI brass, how would one fireform it? Neck up and fireform? Jammed bullets or COW method?
How about making 6.5-280ai brass from norma .270win? Same thing, just neck down & trim instead of up before fire forming?
Has anyone actually tried this, or something similar, blowing a shoulder out and forward about .051"
I just wonder...