A while back a friend asked if I had an 8x57 form/trim die. I pulled out a spare and sent it off to him, and asked what he was working on. Turns out he was going to form 8x57 from '06 brass, then expand it for his new 9.3x57. I told him to just have the die bored out to 9.3x57, which he did, and now he'll always have a source for brass for his rifle. No reason a guy couldn't scrounge up a forming die, or even a sizing die, for 7x57 or 8x57 and do the same.i made brass by necking 8x57 ppu brass up to 9.3x57. it is a little short(.010" i think), but it fits my bill. i heard that you can do a 30-06, but thats my next, next, next project.