Tully Mars Posted April 12, 2016 Share Posted April 12, 2016 Howdy All! At WR this year I was having issues with my M12. I wasn't sure if it was me or the gun. The problem was I would eject or kick out a live shell with or without a slight strike on the primer. Here's what I determined the problem to be, hopefully this helps someone out. It was the lock up of the action slide lock and the hammer. Correct me if I'm wrong, but when slam firing the only thing holding the hammer in the rearward position is the action slide lock, since the sear and hammer notch are not engaged while slam firing. I pulled out both of my M12's and held the trigger back and slowly worked the slide. My back up M12 the hammer would not fall until the very last moment of the bolt locking up. On my main match gun the hammer would fall with the bolt half way through the cycle allowing the hammer to just follow the bolt down with minimal or no strike on the primer. After pulling both trigger groups out and comparing them it was obvious that my main match gun's lock up was not good. Anyway after some welding and filling on the hammer my main match gun seems to be running as good as ever, hopefully it will continue. Tully Main match M12 original lock up. http://i210.photobucket.com/albums/bb114/tullys_photos/m121.jpg Back up M12 lock up. http://i210.photobucket.com/albums/bb114/tullys_photos/m124.jpg Main M12 post welding, it's not beautiful, but it works! :) http://i210.photobucket.com/albums/bb114/tullys_photos/3c7d7107-e853-4d23-a754-88ad2e96781a.png Quote Link to comment Share on other sites More sharing options...
Boggus Deal Posted April 12, 2016 Share Posted April 12, 2016 Tully, I am gonna go against the tide here. The Model 12 was not designed to slam fire. "Slam firing" is a side effect of the design. What I mean is that when the designers drafted the Model 12, one of their criteria was not the ability to slam fire. It was intended to be fired from a closed action by pulling the trigger. I would suspect that slam firing has worn those parts down and is the reason you had to weld and refit them. Feel free to email those pics and I'll try to post them for you. tboggus@hotmail.com Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted April 12, 2016 Author Share Posted April 12, 2016 BD, I'm sure your correct! It's kinda hard to change habits though. Tully Quote Link to comment Share on other sites More sharing options...
Boggus Deal Posted April 12, 2016 Share Posted April 12, 2016 Especially bad ones, huh? :D I have several spare hammers and action slidelocks if you need them. Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted April 12, 2016 Author Share Posted April 12, 2016 BD, Thanks Boggus, but it's working now. The original fit was very poor. The hook actually hit the hammer stand off each time it moved forward creating more wear. It will get me through the CA state and beyond. Considering all the gun related issues I've been having this is one less thing to worry about. Thanks and good luck in Utah! Wish I could join you! Tully Quote Link to comment Share on other sites More sharing options...
Boggus Deal Posted April 12, 2016 Share Posted April 12, 2016 Tully, I can't make Utah this time. Work is getting in the way, but thank you, all the same! Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted April 12, 2016 Author Share Posted April 12, 2016 Damn work! It's either that or money! See you next year! Tully Quote Link to comment Share on other sites More sharing options...
Silvertip Posted April 14, 2016 Share Posted April 14, 2016 Tully glad you got that fixed it was painful watching you are always the best shot gunner. ST Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted April 14, 2016 Author Share Posted April 14, 2016 Thanks ST! Quote Link to comment Share on other sites More sharing options...
August West Posted April 21, 2016 Share Posted April 21, 2016 Tully: Thanks for posting this and for making the effort to support it with such excellent pictures!!!! Great information, me thinks. Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted April 21, 2016 Author Share Posted April 21, 2016 Your welcome August. Hope it helps someone. My M12 is running great now that it's been taken care of. You still have time to make our State match :) Tully Quote Link to comment Share on other sites More sharing options...
Tully Mars Posted May 2, 2016 Author Share Posted May 2, 2016 My gun worked great during the California State match. This definitely was the issue with my M12! Tully Quote Link to comment Share on other sites More sharing options...
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