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How can I adjust the Trigger pull on an underhammer

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wizard71

36 Cal.
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I'm havin a small problem with my underhammer. Got the receiver a few months back from Bruce at BlueGrouse Black Powder. Finished the gun it can out real nice.
The problem I'm having is trigger is extremely light. Bruce told me he makes them that way for target shooters. However, I'm a hunter not a target shooter.
The trigger is so light that all I have to do is rest my finger on the trigger and "BANG".
I've tried filing the end of the trigger, now it's even worst. Half cock is fine.
Any ideas?
A picture of what the trigger and hammer contact point should look like would be a real help
 
The angle of the sear notch in the hammer will make a big differance. If you could draw a line through the pivot hole to the notch they should line up. If the notch is slanted a small amount the trigger is light or heavy depending on which way it is slanted. This area should be hardened to keep it from ware and make the parts slide easy.
 
One hammer with small area.
PB040355.jpg


Another hammer with larger surface area.
PB040352.jpg


Both hammers side by side.
PB040356.jpg


Both work and have different characteristics. What John said is correct. Hope this helps.

Viva Underhammers! :hatsoff:
 
I get the picture.I'll work on it tomorrow and see how it works out. If I screw it up, does any body have a spare underhammer hammer?
 
Don't throw out the old hammer if you mess up, it can be built up and reshaped again with a tig torch and a file. Best part about welding is that a hard rod can be used to build it back up and it will heat treat without using something like casenite.
 
Call Bruce and talk to him about it. On his site he mentions carrying a spare hammer. One set up very light for targets and another set up heavier for hunting. They swap out easily. I'm sure he can either walk you through setting that one up, or provide one set up for you already.
 
John, Gmww, Plink
Thanks for all the great help and advice.
It worked out perfect. After a few times filing a little and trying, I was able to get the trigger real close to my other muzzleloaders(flints).
I'm on my way out to the range.
 
Glad you had success, but as John Taylor mentioned, you'll need to reharden the hammer notch and trigger tip if you hope to keep it that way.
 
AMEN :thumbsup:


Up to this point I've only shot flintlocks.
There has always been a small gape between the hammer falling and the bang.
This gun is awesome.
Talk about fast ignition, holy cow. :shocked2:
.
 
And the bigger the ball the more fun they get. :rotf: Fred :hatsoff:
 
no fair fred, yours is a cannon without wheels! :bull: don't mind me, i'm just jealous. WK1
 
BTW,
Fred did you get a chance to look for the front wood for a 13/16 barrel I asked about?
 
If Fred don't have one, you might speak to John T. I provided a blank 2"x2" maple and he cut a chanel for my barrel. :hatsoff: 15/16". Not sure if he's got a smaller one but it's worth asking I suppose. :winking:
 
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