I am loading some CAS loads for a Blackhawk revolver. Has anyone used a taper crimp die for light loads in the LC? I am shooting 165 grain LFN bullets and there really isn't a crimp grove to roll crimp them. I have a 45 ACP Taper crimp die and it looks like they have a pretty good crimp. I am just shooting 6.0 grains of Tite Group.

Also, As I recall way back when I shot bowling pins with a S&W 45 LC revolver. It seems the diameter of the bullets was 454. Later when I shot single action with the Ruger, it seemed to like 452 diameter bullets better. Did Ruger go 452 instead of the old 454?