Been shootin my 500 NE a bit this spring, Question is the action screws back out a little, I have filed a bit to keep them timed after firing.
Is this normal? or do you guys put anything on the threads to keep them tight?
My rifle is a Alfred Schilling built on a Merkel action. Thanks for any help or info.

I've never had that problem with my double rifles but they ar'nt 500's ether. My F.A. .454 casull needs screws tightend after every time I shoot it.

Tightening screws is just a normal part of cleaning that gun and I would say in both cases it's just a function of recoil.

Thanks AK,
spose Ill incorporate that into my routine, Shoot, clean, re-time screws. simple enough.
strange on your 454, mine stays tight, although I did crack a set of grips a few yrs back.

That is what loc-tite is for.

If you're going to use Loc-Tite like I would MAKE SURE that you use the blue colored stuff. The red and green take heat to break them loose next time. The blue doesn't, it'll break free by a bit of force.

Tip from the Loctite people. When backing out screws set with the blue product, use slow, continuous force. The blue stuff will slowly "heat" up internally with a slow, steady application of torque. Remember, pressure generates heat. A quick jerk on the tool will often snap the screw.

I got advise from a gun builder that has worked well for me. Use Scotchkote electrical coating from 3M on the threads. It doesn't set up as solid as Loctite, but works well enough to hold threads in place. It has worked well on my 404.