All revolver rounds should be crimped, no?
I crimp my .41 Colt. The bullets don't move in my BP loads in my SAA but in my SM loads in my DA they creep forward ever so slightly. The bullets I use have no cannelure.
I roll crimp all my .455 rounds. Both bp and smokeless. I tried taper crimping but they still wanted to move on me. I think the problem is the bullet weight, they are quite heavy.



























