I've had mine for almost 3 years now and I hunt like 2 times a week. It's been nothing but great I had a couple misfires the other day 2 much oil on the firing pin spring. Mine cycled big 2 3/4" shells 3" and 3 1/2" when I first got it, after a few boxes of bigger shells it then worked great for rabbit with 2 3/4"
1 1/8oz cheap winchester shells. The older ones made before the end of 2005 had some light 2 3/4" shell problems they had a different gas piston design.