December 17, 2008
I haven't had that problem, but I would suggest looking at the firing pin to make sure it is not too tight a fit to the hole (or oblong, gunked up, etc.) & moves freely.
Second would be the main spring. Make sure you have the proper grip screw(not interferring with the spring) and the correct spring (not one of the lower strength / easier trigger pull type).
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January 24, 2009
I agree with Dusty.
I had a gummed-up firing pin in an auto pistol I used to have, it would act just like that...especially on cold days. I punched out the roll pin that held it in & flushed out all the crap that was making it drag. A little light oiling going back together & it was good as new.
Pull your hammer back (unloaded, of course) & tap on the firing pin with a pen. It should push in quickly & snap back immediately after you pull the pen back. If it returns slowly, it's gummed up & that's probably your mis-fire problem.
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