Back in the '70's bought this extra Taper die for this purpose.
As stamped on the die, that is a taper crimp die. Don't use that for your 357 M loads or you will find yourself in the same place. Get a roll crimp die.
Back in the '70's bought this extra Taper die for this purpose.
You need a roll crimp in the crimping groove...Simple..
Agreed. I had one creep out in my Ruger 44 Special SA, and it was a moderate load - 850 fps. But a big old 240 grain lead SWC has some mass. I was lined up right on the crimping groove, just not quite enough crimp. I had loaded 50 like that; so I ran all 50 back through the seating/crimping die for a tad more crimp. No more problems.You need a roll crimp in the crimping groove...Simple..