I mounted a Gemtech Mist 22 suppressor on my Ruger 10-22 yesterday afternoon. Very tight fit into the receiver that took some light emory sizing to get it mated up. I tried some of the bulk 22 cal ammo that the CMP offers. It is rated at 1090 fps. It was about 45 degrees with 90% humidity at less than 500ft above sea level. I am happy to report that it performed very well. No sonic crack, just the sound of the bolt clacking and ringing steel down range. I ran out of daylight to be able to report on accuracy. Sure was fun though.