Siler lock fires from half cock

[berdar]

Hi all,

My dads 81 year old best friend recently built a Southern Mountain styled rifle for me. He did this while recovering from open heart surgery to replace a valve and then having a stroke.

Due to his condition, the fit and finish aren’t what they could have been. I don’t care though, I love this rifle more than any other that I have.

The lock works as expected out of the stock. In the stock, it will fire from the half cock position. It has a single, non set trigger. It appears that the trigger bar is pressing up on the seat, ever so slightly.

Before I file down the trigger bar, I wanted to touch base with a larger knowledge base. Has anyone run across this? What would you do if this was your rifle?

 

[EC121]

If the sear nose is in the notch, it shouldn't fire from half cock. See if the sear bar is hitting wood and holding the sear nose out of the notch. Something is keeping it from seating completely into the tumbler notch. Also see if there is a tiny bit of slop between the trigger bar and the sear bar. The trigger bar shouldn't be riding the sear bar. At least not accidentally. Some folks put a small spring in the trigger assy. to hold them together.

 

[berdar]

If the sear nose is in the notch, it shouldn't fire from half cock. See if the sear bar is hitting wood and holding the sear nose out of the notch.

Will do, thank you.

 

[Zonie]

...

The lock works as expected out of the stock. In the stock, it will fire from the half cock position. It has a single, non set trigger. It appears that the trigger bar is pressing up on the seat, ever so slightly.

Before I file down the trigger bar, I wanted to touch base with a larger knowledge base. Has anyone run across this? What would you do if this was your rifle?

The highlighted part of your quote explains what is happening.

In order for the sear to fully enter the half cock notch (and the full cock notch) the blade on the trigger must not touch the sear arm when the trigger is pushed to its fully forward position. In other words, the trigger should exert no pressure at all on the sear arm when no one is touching it.

File off some of the top of the triggers blade to fix it. It might take several attempts to get it right but unless it is, the gun is unsafe.

 

[berdar]

Thank you Zonie and ec121.

I took a bit off of the top of the trigger blade then noticed the lock had a little bit of cant when I run the screw down. I took a tiny slice of wood out where the sear bar meets the stock.

It all went back together perfectly and now functions as described.

Thank you again.