I have had one since they came out. My rifle shoots 300 gn bullets well and doesn't like the lighter ones. I have used Black powder,Pyrodex loose and pellets, cleanshot, and BH209. I recently added a Badger ridge breechplug, firing pin and boltnose kit. It makes the breech sealed. The original Remington is slamfire and blows back in your face. And blows gases down into the trigger assembly. I have killed many deer with mine. I shoot CCI magnum shotgun primers, 100 gns BH209, and a 300 gn Barnes expander bullet in an MMP sabot. It shoots 1.5" groups at 100 yds.