Has anyone had experience with a Model '21 doubling? (that hurts the shoulder !). In our wobble trap game we are allowed to load 2 shells. While shooting last Saturday, I had the unpleasant experience of the gun doubling (twice in 100 targets). Refering to the NRA Disassembly Instructions, and with properly fitting screwdrivers, I feel that I can remove the trigger plate for cleaning and lubrication, however, I then don't know what else to look for. Any advise on this?
Thanks in advance -- Bob