A few years ago I picked up a used percussion Lyman GPH, LH in 54 caliber. I'm just now getting around to shooting it but I cannot get the set trigger to work. The front trigger will fire the lock but is stiff. The rear trigger will not set the front trigger. I've pulled the triggers from the stock and nothing looks modified to me. I've moved the adjusting screw in and out with no joy. What am I doing wrong? I'll admit this is my first foray with set triggers.
Lyman GPH, set trigger not working.
- Thread starter WalnutRed
- Start date
Help Support Muzzleloading Forum:
Do you have an old copy of Track of the Wolf catalog? They have a nice write up on set triggers on one of the pages. If you don't let me know I'll see if I can find it.
Could also be interference from the stock, or the triggers might be inlet too deeply.
Could also be interference from the stock, or the triggers might be inlet too deeply.
Phil Coffins
69 Cal.
With the triggers out of the gun pull the rear trigger till it catches in the notch of the front trigger. If it won’t catch then determine why before proceeding. On some there is a main spring tension adjusting screw that could be an issue.
IMG_0270 by Oliver Sudden, on Flickr
On this one the front trigger adjusting screw is missing but that won’t be the issue. What maybe the problem is if the spring that bears on the front trigger to move it to engage the rear isn’t working.
IMG_0270 by Oliver Sudden, on FlickrOn this one the front trigger adjusting screw is missing but that won’t be the issue. What maybe the problem is if the spring that bears on the front trigger to move it to engage the rear isn’t working.
Previously I pulled the trigger and cannot get it to set out of the rifle. I'll pull it again tomorrow and degrease the assembly.
Here is the link to Track's instructions. Maybe it'll be of some help.
https://cdn.trackofthewolf.com/Pdfs/catalog/page_352.pdf
In catalog 17 it is on page 359
https://cdn.trackofthewolf.com/Pdfs/catalog/page_352.pdf
In catalog 17 it is on page 359
Many of the Lyman GPR set triggers I have seen had a short adjustment screw (lawyer thing??) and had no impact on whether or not the set trigger worked.
As previously suggested, start with a good cleaning in a solvent that will dissolve old grease and oil, re-assemble and lube it, then see what you have.
As previously suggested, start with a good cleaning in a solvent that will dissolve old grease and oil, re-assemble and lube it, then see what you have.
THANKS ALL! I downloaded and read the instruction sheet to get an understanding of how these things are supposed to work. Then I disassembled, cleaned and lubed the triggers. After reassembly and some trial and error adjustment the triggers are working. I think the adjustment screw must be short because the instructions said I should be able to release the triggers by turning the screw in, I cannot. I also think that the front trigger return spring might be weak. I have to nudge the front trigger forward just slightly after release. This happens in or out of the gun so I don't think it's rubbing wood.
Looking at ads for the GPH some list a 30" barrel and fiber optic sights. These must be later versions because mine has a 33" barrel, plain buckhorn rear sight and a blade front sight. If it's not raining tomorrow I'm off to the range! I have two weights of conical and some RBs to try.
Looking at ads for the GPH some list a 30" barrel and fiber optic sights. These must be later versions because mine has a 33" barrel, plain buckhorn rear sight and a blade front sight. If it's not raining tomorrow I'm off to the range! I have two weights of conical and some RBs to try.
Similar threads
