Originally Posted by
Guesser
I suffered the same problem. I solved it by using the Lee Carbide Crimp Die for my 452460 and my 452374. It is the bullets, sized .452 that are causing the problem after they were seated and crimped. I even took an extra cylinder and had it faced off so I could use 45 Auto Rim, same problem. I reamed all chambers to .4525 as well. The Lee CCD solved my problems and accuracy is fully acceptable with either cylinder. Actually the gun shoots the ACP better than it does the 45 Colt.