So I swage my own .40 S&W JHP out of 9mm brass w/ lead cores ( BT Sniper swaging die in a walnut hill press ) and the die maker says just keep the jacket case whole.... ( see attachment )
Well - I started having the occasional case that the bullet would literally fall into..... Didn't think anything about it until I hit 3 in a row..... OH boy - what's going on.....
Well - I had gotten to the bottom of my primed brass bucket and that's where there's a block of brass that came off of the range after I'd fired a bunch of my swaged JHP's.....
Best as I can figure, the longer pistol rounds are stretching the brass beyond usable tolerances. :-( Typical .40 range brass - the mouth specs out from .392 to .398 - no problem..... but the swaged JHP brass is specing out at .400 to .407 :-( So now I'm going through by primed bucket and pulling out all the ruined brass.
On another note - I'm working up a jig to cut my swaged projectiles to remove the 9mm ejection ring which I hope will prevent the reloads from wrecking the brass after I put a small taper on the cut edge to ease the project's path into clean brass.
Well - I started having the occasional case that the bullet would literally fall into..... Didn't think anything about it until I hit 3 in a row..... OH boy - what's going on.....
Well - I had gotten to the bottom of my primed brass bucket and that's where there's a block of brass that came off of the range after I'd fired a bunch of my swaged JHP's.....
Best as I can figure, the longer pistol rounds are stretching the brass beyond usable tolerances. :-( Typical .40 range brass - the mouth specs out from .392 to .398 - no problem..... but the swaged JHP brass is specing out at .400 to .407 :-( So now I'm going through by primed bucket and pulling out all the ruined brass.
On another note - I'm working up a jig to cut my swaged projectiles to remove the 9mm ejection ring which I hope will prevent the reloads from wrecking the brass after I put a small taper on the cut edge to ease the project's path into clean brass.