Trigger group status while storing the rifle?

[Maury Krupp]

The feeling was that with glass bedded match guns, storing with the trigger group unlocked helped save the glass and prevented loss of downward pressure exerted by the stock in most accurization schemes.

I still don't see any benefit

Whatever is being squeezed between the receiver rails and magazine floorplate, whether it's straight wood or bedding compound or a combination of the two, is as squeezed as it ever will be the first time the trigger guard is locked.

None of these materials are sponges. Unlocking the trigger guard won't cause them to expand like one. You can't "un-crush" wood fibers. The same goes for modern bedding compounds like MarineTex and I suspect the older ones as well.

Leaving the trigger guard locked doesn't exert any additional pressure. Once the distance between the two clamping surfaces has been closed that's all the pressure there will ever be.

I say the less yanking, tugging, twisting, etc on an M1 the better.

Maury