I'm getting ready to work up some new loads for 9mm with 124gr Xtreme FP copper plated bullets. I was really trying to use up the Rainier bullets I have left out the 1000 box with around 300 or so left, but after measuring quite a few that were ranging anywhere from .352-.354 I've started losing faith in them. This smaller size was causing neck issues in the case, and I've had problems I've never experienced before; but thanks to the forum I have become a lot more aware of reloading practices. I'm looking for some data on starting loads for this bullet and any data you might have concerning using them. The cases will be pretty much anything, and I have a variety of powders. I'm really interested in the COL of this particular bullet. I'll be using several different guns makes, and they all have their own preferences, but I need to start somewhere. Off the top of my head, I was using Universal for the past 9mm, but I also have Unique, WST, WSF, HP-38, HS-6, Bullseye, and a few others that I can't quote presently without walking down to the basement and looking above the bench.