Re: H&R single shot problems
Yes they are pinned and if you aren't PERFECTLY familiar with the mechanism, while simple as it is, you do not want to be punching out pins and taking it apart! The pieces fit back together like a puzzle and the first time I ever did it, it took me an hour and a half to get it back together right, and I had the scematic right in front of me. Get a can of gun scrubber, attach the red tube to the nozzle, place the end of the tube into the firing pin hole and just hose the tar out of it. Let it drain out the hammer cut out and once dry, lightly...LIGHTLY lube the internals with some dry lube like PB blaster dry lube or something similar, but don't use any oil. If that doesn't fix it, then you likely need a new hammer spring. The only bad part about that is that if you send it back to NEF, it'll come back with about a 12 pound trigger pull if it doesn't have that already.
Big Al's "Take-Em" Style Silhouette Decoys Pro-Staff.