Enclosed trigger failure

[slancey]

I recently had a trigger come out of adjustment on a custom Mauser. It's an aftermarket trigger with an enclosed mechanism. For the first 350 rounds or so, it worked perfectly. Then one day it didn't work at all. The rifle would fire upon moving the safety to the fire position. After a couple of action cycles, the rifle wouldn't even keep the firing pin cocked at all. I've heard of this happening on the Remington 700, but not on any others.
Is this common? Do the more sophisticated trigger mechanisms need to be regularly adjusted?
Are the simpler open trigger designs like the ones on the Winchester Model 70 and Dakota Model 76 more reliable?
I'm still in shock over this event, since I did not expect it to happen to an expensive and well known brand. Any one experience this?

 

[243winxb]

The adjustment screws need a locking agent. Locktite. Was one used after adjustment?

 

[JohnKielly]

Possibly could stand a clean.

 

[Ggmac]

I recently had a trigger come out of adjustment on a custom Mauser. It's an aftermarket trigger with an enclosed mechanism. For the first 350 rounds or so, it worked perfectly. Then one day it didn't work at all. The rifle would fire upon moving the safety to the fire position. After a couple of action cycles, the rifle wouldn't even keep the firing pin cocked at all. I've heard of this happening on the Remington 700, but not on any others.
Is this common? Do the more sophisticated trigger mechanisms need to be regularly adjusted?
Are the simpler open trigger designs like the ones on the Winchester Model 70 and Dakota Model 76 more reliable?
I'm still in shock over this event, since I did not expect it to happen to an expensive and well known brand. Any one experience this?

The Mauser aftermarket triggers , Bold , timney and others usually have a set screw to tighten the whole assembly . It's secured by the pin and the screw just pushes the assembly up in the rear . This is the first place to look . Then you have the usual 3 screws we will get into later but I think it's the screw nearest the mag cut out .
Gary

 

[Ggmac]

If it's the Canjar you were talking about it still has the screw that tightens the assembly and it pivots the assembly up . If it's not that I suggest a good old school smith that is knowledge able in the Canjar set assembly and it's adjusting . Last one that was sent to me had been ground on by a previous smith trying to adjust .

 

[slancey]

I don't believe it had any Locktite. One of my gunsmiths used to use nail polish for the set screws, and he used a different color for each one. I thought he was a little eccentric, but now I understand why he did that.
The gunsmith tells me it just came out of adjustment. There is some wear on the surfaces, but not enough to cause this problem. I would have thought it would take longer for a screw to back out like that.
I guess the takeaways are that the trigger needs a regular cleaning and inspection of the assembly.
I still think the Winchester open design is less prone to this, but maybe not.

 

[243winxb]

The gunsmith tells me it just came out of adjustment.

Neighbor had a long plane ride on a hunting trip. PH had him fire a few shots before the hunt to check zero. Rem rifle would not fire.

Vibration from the plane had changed the triggers sear engaugement.
There was no threadlocker used after the gunsmith adjusted the trigger.

Winchesters work fine..

 

[slancey]

Thread locker: that's a term I keep hearing and reading about.

 

[Larryh128]

Thread locker: that's a term I keep hearing and reading about.

All Mausers have a pin that attaches the trigger to the bottom of the action, a set screw is then used to tighten it in place. As previously stated, it's probably this set screw. Simply tighten & your issue ,may be cured.