This is actually an H&R Pardner Pump. Just finally took it to the range to check function and it didn't. After firing a shell it FTE and tried to jam another shell up in there. Unloaded and put back in trunk. Back at shop, I've determined the shell hangs up on what I call the "barrel locating lug, etc." (see pic) pulling the shell out of the extractor as the slide is pulled back. The assembly in question is pinned or brazed in but the pins are flush on the outside of the receiver so I don't think it is removable or meant to be. Do you think I'll be OK smoothing the edge of the barrel locator? Anyone ever seen this problem?