first trip to the range, i fired magtech fmj, remington hp. i tried some wwb, but like other reviews have stated, some are a little long for the magazine. my glock 30 magazines must have a little more room to accommodate for overall length. other than the wwb, it functioned flawlessly. I like the soft recoil and curved back strap. i started with the flat back strap, but after i switched to the curved back strap my consistency improved a noticeable amount. funny how something small like that can make a big difference.