Here's my report from my first outing. Before firing, I cleaned factory lube, and Frog Lube clean and lube. Used American Eagle 149 gr. rounds. I had a rough start. Fired twice, ftf. Fired twice, ftf. I removed magazine, reinserted. No problems after that. Both ftf were identical. The bolt wedged the round close to the top of the casing. Both rounds bent. It had less recoil than I anticipated. Muzzle rise was pretty significant. Very accurate, though I was only at 50. I was just wanting to get ACOG on paper. Actually it was just about on out of the box. Overall I was very happy with first outing (with the exception of those first ftf's. I put another 60 rounds through it with no issues.