I have seen this problem with an Optima pro, which is also made by CVA. I used to work at D i c k 's Sporting goods, and a guy bought this gun, then brought it back, saying it was defective.The only difference was that hismisfiring was pretty inconsistent. The problem turned out to be the breach plug. It was not screwed in far enough. Your gun is not a break action like the Optima, but it is worth checking.