I have one. A 17 HMR in semi auto=fun. Accurate way beyond it's price. Mine ran fine, with no malfunctions of any kind. Probably shot it around 75 rounds. Mine shot at 5/8" with the A17 ammo at 85 yds with a 5x scope. I'm sure it would do better with a higher magnification scope. Not sure there's anything so special about the ammo, but it did shoot it well.
