I use 147 grain, Hornady FTX rounds and have had no problems at all, I was going to buy the golden sabers since that is what I use in my P3AT with out problems, but the owner of the store said he has seen problems with the PF-9 and golden sabers. The Hornady rounds have a very pointed nose, and rubber ball in the end to prevent hang, he said he has never seen or heard of a Hornady FTX failing to chamber. The other reasoning for the FTX is in all the test shots he has personally done with them, every one mushroomed perfectly, which is more than he can say for other HP rounds. So I took his suggestion and they work great. I have the new version of the feed ramp.