Colt 22 SA misfires
I inherited a Colt single action 22 revolver with an additional 22 mag cylinder.
The revolver set in my father's vault for over 20 years. I tried firing it today and only had about 2 out of 6 rounds fire. The dent on the rim is very slight.
I tried 3 different makes of 22 LR ammo with the same results.
The hammer hits a firing pin in the frame. There is not a firing pin on the hammer. Thinking there might be gummed oil around the firing, I put a few drops of WD40 on each side of the firing pin. That helped a little. Now 3 out of 6 shots usually fire.
Should I try a different solvent or take the revolver to a gunsmith for dis- assembly and cleaning?