The Firing Line Forums - View Single Post - Help! 357 mags won't chamber...what did I do?

joneb · December 10, 2007, 08:49 PM

Before I started trimming my revolver brass I would get some rounds that would not chamber do to excessive crimp from my RCBS seat/crimp die. I ironed out the bulged cases with the sizer/decapper die minus the decapper, I ran the cartridge into the sizer die about 3/64". The problem was some of the once fired cases(from factory ammo) varied in length up to .010"

December 10, 2007, 08:49 PM	#13
joneb Senior Member Join Date: December 10, 2005 Location: Central , OR Posts: 1,888	Before I started trimming my revolver brass I would get some rounds that would not chamber do to excessive crimp from my RCBS seat/crimp die. I ironed out the bulged cases with the sizer/decapper die minus the decapper, I ran the cartridge into the sizer die about 3/64". The problem was some of the once fired cases(from factory ammo) varied in length up to .010"