I'll try to make this as brief as possible. Basically a few months ago my dad bought a Marlin 795 .22 to plink with and such. It was the first rifle we ever purchased. Few hundred rounds in, I decide to do the initial cleaning. Re assembling it, I was having trouble getting the recoil spring in. Long story short, the spring kinked and the guide was bent. We sent it to a gun Smith who got it back in. After we got it back, we put a few rounds in, and every 10-20 rounds, the round would dud. The round would still have a dent in it, and I opened it and found there was still gunpowder. So we call the gunsmith, and he tells us to switch from the ultra cheap rounds to CCI. I was skeptical because this never happened before we got it worked on. So today we tried the CCI and the same thing happened. We're calling the gunsmith tomorrow, but any advice or theories would help.