I can only tell you about previous runs of the 432256 (.432" dia.) with 95.5/3 and 1.5% tin. Of 4 different production runs 1 was exactly .432" and 3 were just over. I size .431+ and the drive bands come out flawless.
I have the 4c HP too. It makes hollow points fun! I've shot a ton of the solids.
Edit: Recount, closer to 50,000