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184 Posts
Hello all,
I have a rifle (7X57mm) that shoots substantially better with partial sized cases (almost 1" smaller groups versus f/l sizing). I have several boxes of brass that I'd like to fireform to the chamber (which is slightly oversized) so that I can partial size them. I'd rather not waste any of my Sierra match bullets (a bit pricey) just to fireform the cases. Since I have no other 7mm bullets on hand, is there a way to fireform these cases without bullets? I'd like to get as tight a fit in the chamber as possible. Any help is appreciated.
SSB
I have a rifle (7X57mm) that shoots substantially better with partial sized cases (almost 1" smaller groups versus f/l sizing). I have several boxes of brass that I'd like to fireform to the chamber (which is slightly oversized) so that I can partial size them. I'd rather not waste any of my Sierra match bullets (a bit pricey) just to fireform the cases. Since I have no other 7mm bullets on hand, is there a way to fireform these cases without bullets? I'd like to get as tight a fit in the chamber as possible. Any help is appreciated.
SSB