JohnGalt brought up something that I should have mentioned. I haven't used them in my auto's, just revo's, and mainly in .44 caliber.

Mine were/are Berry's. I have had to use very tight roll crimps on them, making my own at whatever length I needed simply by crimping them in that spot (and they do crimp right into the bullet quite easily). They still jump crimp even with very mild target loads (all we are allowed on the club's indoor range) in either the .44 mag case or the Special case. A taper crimp die doesn't seem to help much either, at least not in my revo's.

I have found Berry's to be quite accurate inspite of this, but by the 6th shot, the bullet is always only a few thousandths from protruding out of the face of the cylinder and tying up my gun. For that reason alone, i don't shot them much aymore.