Davis o/u (Derringer style)
Two problems
1. Lower barrel fires, upper barrel does not.
Upper firing pin puts hell of a dent in the rim, but doesn't fire!?
2. I took the retainer and pin out, to investigate, retainer came out fine, but when I tried to put it back together, looks like threads in frame that retainer screws in to are very slightly boogered up, retainer won't screw in ( I don't want to force it and make it worse).
Is there a kind of tap that will fit in there to clean the threads up? Threaded area is only about 3/16" deep, so it would take some kind of a "flat headed " tap to fit .
Thanks in advance for any help.
Two problems
1. Lower barrel fires, upper barrel does not.
Upper firing pin puts hell of a dent in the rim, but doesn't fire!?
2. I took the retainer and pin out, to investigate, retainer came out fine, but when I tried to put it back together, looks like threads in frame that retainer screws in to are very slightly boogered up, retainer won't screw in ( I don't want to force it and make it worse).
Is there a kind of tap that will fit in there to clean the threads up? Threaded area is only about 3/16" deep, so it would take some kind of a "flat headed " tap to fit .
Thanks in advance for any help.
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