I have a Rossi 12 gauge singe shot. I have shot Federal light shots and it only fired about 42 of 50 rounds. I went today and attempted to fire Remington Slugs from it and it didn't fire @ all. I then fired a 3 in Federal slug from it, and it fired 3 of 5 shots. I took it to the gun smith and he couldn't find anything really wrong with it. He fired 10 shots of federal and it fired fine. He said that I needed to find caps where the dimples were not so deep. The remington sluggers were completely flat. The Winchester and Federals had nice dimples. Since I had never used Winchester I got a "small load" of those and shot all 25 shells without a problem. Has anyone else had this issue? Any help or advice would be appreciated.
