I've tried lots of ammo and have found that most all high quality hp's work just fine as well as high quality jacket flat nose. Most of the full metal jacket round nose will FTE on about the third or fourth round. As long as I use Winchester HP, Remington HP, or Hornady HP I have no problem. Never, never use the cheap stuff - it just won't work. Also, I've found that a little oil on the slide after about 100 rounds also helps a lot.