Shot mine on a Norrell pack a couple wknds back and was quite pleased. NO MALFUNCTIONS! I had a Gen 1 that broke and the company replaced it with the next gen, great service. Since it worked so well, had to stop by the guy in the pole barn and bought a couple more for 40ea. I shot MiniMag HP for this go around. Might have to play with ammo and your gun as it seems like with all .22 stuff. The HP is shorter than the round nose so you may keep the OAL when you trial.