The problem I'm having reloading the 7.62x25 is that I or my dies will not keep the bullet straight in the case as I "crimp" the bullet in. Lee Dies have a floating bullet seat inside the bullet seating die and if the bullets gets cocked just a little, it will stay that way . Then the shell will not go into the gun and/or the slide will not close.
I'm trying to find something that will hole the bullet straight in the case while I'm seating the bullet to the depth that I want it. I was using my 9mm bullet seater and that helped a little, then I got a .308 rifle die, grown off about an inch and a half off the bottom, grown off aobut half the nurlled part of the top. and after getting this into my press the locking ring had to go on the bottom of my press. It looked good, but today i shot a box of the shells that I had made and it looked like a shotgun did it. Usually, the CZ52 that I use is just about a tack driver.(I've got three of them and one is converted to a 9mm)
After loading the the shells then I have to run the loaded cases back through the resizing die. That was my last plan. Now I'm back to trying to find the real thing.
And yes, if you try to hard to crimp the bullet, you can crush the case. (ok, ok, I've been there and done that)
"O", you can make the brass out of .223 cases. and they work fine. Just have a case trimmer. I've got a lyman and it works just fine.
I used the barrel out the one that i made into a 9mm for a go, no go gage.
yours truly, Pat McC