That is the question. 'Tis it nobler to taper crimp, roll crimp or not crimp at all. I've always crimped bullets when I reloaded for my 3 gun ammo. I put slight taper crimps on all my 5.56mm NATO & 7.62 NATO ammo. I'd run the taper die down until it contacted the bullet, then turn it down one quarter rotation & lock the die ring. I started doing that after experiencing bullet set-backs during a practice session with my 5.56 NATO AR.
Right now, none of the 6mm ARC ammo I've loaded is crimped. What I've been thinking I might do is experiment with case neck tension instead of the taper crimp. I have L.E. Wilson dies with different neck sizing bushings. What I have in the Wilson sizing die right now is the bushing suggested by Wilson which gives the Lapua brass I have a .001" smaller inside diameter than the same brass sized in the Hornady die. The AA brass I sized in the Wilson die has the same inside diameter as the AA brass sized in the Hornady die. Obviously, the Lapua brass is thicker in the neck than the AA brass. Do I change the bushing down .001" for the AA brass or put a slight taper crimp on it?
All the brass I'm using is resized 6.5 Grendel brass. The Lapua brass with their thicker necks, will it cause chambering problems? Dang! So many questions & no answers yet. I guess I'll get my answers eventually...
Right now, none of the 6mm ARC ammo I've loaded is crimped. What I've been thinking I might do is experiment with case neck tension instead of the taper crimp. I have L.E. Wilson dies with different neck sizing bushings. What I have in the Wilson sizing die right now is the bushing suggested by Wilson which gives the Lapua brass I have a .001" smaller inside diameter than the same brass sized in the Hornady die. The AA brass I sized in the Wilson die has the same inside diameter as the AA brass sized in the Hornady die. Obviously, the Lapua brass is thicker in the neck than the AA brass. Do I change the bushing down .001" for the AA brass or put a slight taper crimp on it?
All the brass I'm using is resized 6.5 Grendel brass. The Lapua brass with their thicker necks, will it cause chambering problems? Dang! So many questions & no answers yet. I guess I'll get my answers eventually...
The trick is growing up without growing old. -- Casey Stengal