Another guy with double set trigger problems with a Lyman Great plains.

[Forrest Smith]

I bought a used Lyman Great plains .54 cal. rifle, the front main trigger will not release the hammer, when pulled on it's lone. It works when the rear set-trigger is engaged and then the main front trigger will release the hammer to fall. Anyone direct me in the right direction to solve the problem?

 

[Phil Coffins]

Pull the trigger group to see if it’s been altered. Add a photo of the triggers both set and unset so we can better advise you.

 

[Forrest Smith]

Some photos

 

[springfield art]

I personally never wanted or liked double-sets; just a nice single trigger is fine, but apparently many guys like the double-sets.

 

[Phil Coffins]

Your triggers appear to be unaltered, next is are they setting at the right depth in the stock. When firmly in place the front trigger should only move a short way to engage the sear of the lock.

 

[longcruise]

When these GPR triggers have this problem it's almost always about geometry. Phil has you on the right track.

 

[Forrest Smith]

I do need to check that, but usually in the kits from T/C and Lyman, they came pretty hard close to the right depth. But that is certainly something I will check over weekend and gives me another chance to see if I can make the magic work!

I did screw-in the adjustment screw for the main Spring. Doing this, allowed the "hook" in photo #3 to move down into place better.

 

[R Ellis]

Some triggers work like yours It may be made that way

 

[Prairieofthedog]

I do need to check that, but usually in the kits from T/C and Lyman, they came pretty hard close to the right depth. But that is certainly something I will check over weekend and gives me another chance to see if I can make the magic work!

I did screw-in the adjustment screw for the main Spring. Doing this, allowed the "hook" in photo #3 to move down into place better.

Play with the triggers out of the gun,should give you a good idea on how they work. That back flat spring tension has a lot to do with the function of the lock.

 

[gustaf]

I had to put a longer screw in mine to get it to work properly. I had a bunch of screws taken from computers and electronics and found one to fit. It was phillips head and plated so I stripped the plating and filed a slot.