My brother has the same gun, Doing the same thing, I have a tc encore and never had any problems with it. We shot what i use in my gun in his, His misfired, It does'nt matter what primer i use, or bullet, mine still fires, He uses jim shocky gold powder, I us the triple 7 pellets, I think its those cva's or something, Iv'e hunted with mine in northern Quebec moose hunting for 10 days, rain, snow, sleet everyday, Mine still shot. I would'nt trust my life on my brothers cva. Find out whats going on with yours, so i can tell my brother, I've tried everything with his, it still misfires. Thanks