I have a 12 ga. Uplander Supreme (single trigger) it appears to missfire quit frequently, however I think there may actually be an issue with the selective safety. Winchester AA shells will double fire (both barrels fire at same time) when shooting right barrel first, they seem to have more sensitive primers. Other brands will fire right barrel, missfire left (small dent in primer)and once in a while other way around. Anyone every have this problem? Any easy home fix, or should it just go back to Stoeger for repair. Firing pin protrusion is adequate and firing pin springs are functioning correctly. Help!
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