Actually, with some of the Long Branch and wartime Brit No.4 forearms, that can happen. Mostly due to shoddy work by RCEME armourers, I believe. I checked out several ranger rifles that shot badly, the forearm bedding was at fault in all of them. Of course, I am not allowed to touch Her Majesty's weapons, so I couldn't fix them.

The SMLE has a better bedding system, once it's set up right. That big nosecap keeps everything the way it should be. A lot depends on the wood quality, though. I gave up on restoring SMLE's once I couldn't get British wood. I've had two Indian forearms break down in service, the bedding surfaces just squashed out. I did two with little walnut blocks grafted in to absorb the shock, but that is very time consuming.