I've shot four different kinds so far. PS Grand FMJ (50rds), Silver Bear FMJ (450rds), Silver Bear JHP (50rds), and Barnaul JHP (150rds). The only one I've had any failures with is the Silver Bear JHP, I shot it indoors and it worked fine but then I shot it outside in about 15° weather and it kept getting caught on the feed ramp and was a two person operation to clear it as the round was half way out of the mag. As mentioned, the Barnaul does smell kinda bad but you get used to it. It also turns your hands green hehe.