reloading - don't crimp

MarkC · 10-09-2002, 02:22 PM

I have really enjoyed this thread about reloading. The taper crimp is the way to go for semi-auto's as I have seen a roll crimp cause havoc because of the headspace issue as Thor pointed out.

Additionally, I might mention the added advantage of crimping in a seperate die from seating. This will make your ammo much more consistant/accurate.

Lee sells a die called the "factory crimp die" that has the additional benefit of a carbide sizing ring which will eliminate any "bulge" caused by the reloading process. I have found this useful in a few of my guns with custom 9mm barrels which chambers have tighter tolerances than mil spec barrels, where any slight bulge will cause feeding problems.

10-09-2002, 02:22 PM	#5
MarkC User Join Date: Jun 2002 Location: Boston, MA Posts: 482 Thanks: 1 Thanked 126 Times in 29 Posts	I have really enjoyed this thread about reloading. The taper crimp is the way to go for semi-auto's as I have seen a roll crimp cause havoc because of the headspace issue as Thor pointed out. Additionally, I might mention the added advantage of crimping in a seperate die from seating. This will make your ammo much more consistant/accurate. Lee sells a die called the "factory crimp die" that has the additional benefit of a carbide sizing ring which will eliminate any "bulge" caused by the reloading process. I have found this useful in a few of my guns with custom 9mm barrels which chambers have tighter tolerances than mil spec barrels, where any slight bulge will cause feeding problems.