Update: went to the range on Saturday and shot approximately 200 ACME loaded cartridges without any failures. However I field stripped the pistol after about 100 rounds to check things out. There was the typical carbon or coating build up in the first 2-3 mm of the throat and the remaining cartridges would plunk, but they wouldn't spin. I continued to shoot and noticed that once the pistol was in battery that I couldn't chamber check by pulling the slide rearward slightly. Obviously I didn't chamber check every round, but some, not all, would stick and I couldn't open the slide without applying a lot of force.
At this point, I'm ready to go back to jacketed bullets. For what it's worth, I determined the MAX COAL to be 1.205" and 1.1925", for the Blues and ACMEs respectively. So, I highly doubt using a COAL of 1.14-1.15" is the problem. Based on the feedback that I've received, I don't believe that I'm over crimping either.
Additionally, I clean my pistol after every use, using SLIP 2000 Carbon Killer and Bore Tech CU+2 Copper Remover - so I know the barrel is very clean.