Over torqued talley rings

[stevotary]

I have a buddies gun that I am working on that is extremely inaccurate. It's rem sendero 300wm shooting hsm 185gr. I found out he torqued the talley light weight rings to 40 in-lb and the rings to 30 in-lb per steel spec. Torque recommendations: For the lightweight alloy mounts: 20-25 in-lb for the base and 17 in-lb for the rings. Could this be the reason it hardly hits paper at 200 yards? Should it be that extreme? It's got to be something else right?

 

[bruce_ventura]

He's lucky he didn't strip the threads somewhere. I strongly doubt that excessive torque is the cause of extreme dispersion. I would look at the usual suspects: damaged crown, ammo, fouled barrel, poor stock fit, scope, etc.

What scope is on the rifle?

 

[stevotary]

Vortex HS

 

[lightflight]

. Could this be the reason it hardly hits paper at 200 yards? Should it be that extreme? It's got to be something else right?

I bet it is part of the problem. If its as bad as you make it sounds seems like something else may be going on as well.

There are quite a few threads of people over tightening vortex scopes with interesting results.

Maybe why my vortex came with a tag wrapped right around where you would put the ring suggesting to using proper torque driver and recommended specs.

 

[stevotary]

I'm don't think the 28 in-lbs would hurt the scope. That is what the steel rings are tightened to. It would just strip the threads on the alumininum rings right?

 

[bruce_ventura]

I agree. I don't see the physics of how excessive ring torque can cause POI dispersion. In my experience when there is a problem with scope installation, it's because of poor ring alignment, poor boresight alignment, or too little torque on the screws.

 

[stevotary]

Thanks for the help guys. It was the ammo that wasn't shooting well. Switchedf to barnes and its shooting awesome.