After +/- 3,000 rounds of Blazer, Winchester White Box, UMC (all in 115gr FMJ) and Speer Gold Dots 124gr +p, the only thing that I had trouble with was the Corbon 115gr +p JHP. They seem to be a little bit shorter than your standard 115gr cartridge. As they were stripped off the magazine, they would go nose up into the slide and prevent it from going into battery.
I've shot a lot of Blazer and the only real complaint I have is that it's pretty dirty.