Traditional Muzzleloading Association
Craftsmanship => Gun Building and Repair => Topic started by: Ironhand on February 09, 2015, 05:27:24 PM
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When I tried to fire my new Derringer I discovered that the lock would not fire the caps consistently. I pulled the lock to see if I could adjust it and discovered this unusual coil spring lock.
As you can see the front surface of the sear strikes a post on the lock plate to stop the forward rotation of the hammer. I believe that if I grind away some of that contact surface the hammer will rotate further and strike the cap harder. It looks like the area could be ground down using a Dremel tool without even disassembling the lock.
Gunmakers, what say you? Would this plan work?
Ironhand
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Is that a CVA product ? I had one, never would pop caps. I made a washer to go behind coil spring to stiffen it up some--worked then, never thought a grinding stop down. looks like tumbler's rubbing the plate by the scratch arc, that'll slow down hammer strength for sure. ..Tom
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i would look at your nipple first . possibly it needs a new one or a taller one . my concern with grinding the tumbler is that as the tumbler travels forward more , the post engagement of the spring also has to have more pivot . without that , you may end up bending or breaking the end of the rod the spring surrounds Or have the post come completely out of the tumbler . IE notice that one the first photo , the end of the spring rod is at an angle that appears to leave very little room for any more travel of the tumbler
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Good point Captchee. I will try a new nipple first. I would rather not work on the lock if I don't have to.
Thanks
IRONHAND
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Looks to me as though the end of the lock bolt may also be hitting the hammer,....
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