Traditional Muzzleloading Association

Craftsmanship => Gun Building and Repair => Topic started by: butterchurn on June 26, 2009, 12:45:00 AM

Title: Lock Help! I'm frustrated!
Post by: butterchurn on June 26, 2009, 12:45:00 AM

I shot a fowler I got from Jackie Brown last summer and finished.  It performed very well.

I problem came when I cleaned the lock.  BP fowling got down into the mechanism so I took the lock apart and cleaned it.  I put it back together and it functioned fine out of the gun.  When I put it in the gun it won't latch on full cock.  Half cock is fine, but no full cock.  I don't get it.  how could this be?

Advice is appreciated.

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Post by: Riley/MN on June 26, 2009, 07:03:16 AM

Bring it north this weekend. We can take a look!

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Post by: Old Salt on June 26, 2009, 07:23:43 AM

My first thought is to loosen the lock plate screws.  It sounds like something is causing interference when you reinstall the lock.

If that's the case you can either remove some material from inside the mortise or shim the lock up a hair.  It all depends on what and where the problem is.

Salt

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Post by: pathfinder on June 26, 2009, 07:27:32 AM

Sear is binding on somthing,most likley the hole fof the sear,if ya tighten the lock to tight it will bind,you don't have to reef down on the bolts

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Post by: butterchurn on June 26, 2009, 11:35:51 AM

TNX for the advice.  I need to do some work on it.  What is interesting is that it didn't bind before.

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Post by: Captchee on June 26, 2009, 10:28:32 PM

check the trigger .
 make sure it isnt up in the sear hole . if it is , it will not alow the sear to drop for the full cock notch .
 then i would look at the inside of the lock inlet . if  fouling was getting down behind the lock , then i would suspect that the lock was not  inlet deep enough to seal  to the barrel flat . when you took the lock out and re  installed it ,  you may have cocked the lock alittle more . thus causing the sear to rub  and catch  so as to hold the sear out of the full cock
 i would agree with the others here , definatly a clearance issue

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Post by: FG1 on June 27, 2009, 12:08:12 PM

Put a little lamp black on bottem of sear re-install lock and work its action then remove . Check bottem of mortice and you may find tha the bottem of sear nose is bumping wood. If not ,lamp black mainspring and check mortice above spring around breech area where spring arcs up when coming to full cock position.

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Post by: Indiana on June 27, 2009, 06:58:48 PM

First thing I would do is check all the screws to make sure nothing is over-tightened (both the lock parts and the bolts which hold it on).  Then do what these guys say.  They know more than me!

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Post by: butterchurn on June 28, 2009, 03:23:56 PM

TNX again.  I will get right at it.

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Post by: Old Salt on July 05, 2009, 08:03:06 AM

How's the repair going for this lock?

Salt

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Post by: butterchurn on July 08, 2009, 11:17:43 AM

I found that the sear bar is touching the top of the trigger.  Why it didn't before, I don't know.  The lock is touching the side of the barrel now.  I did some inletting work to bring the lock down to the barrel.  I will get her fixed right up now!