In photo of the dovetail, there is a shallow recess I milled (could be easily drilled) in top towards rear.
The scout scope mount has a dog set screw which is tightened into the recess and no way will the mount move under recoil. As here:
Many air gun scope mounts have this dog set screw, for air gun recoil is hell for trying to move the mount back instead of forward as on firearms. But the principle remains the same. This is the 30 dollar aperture sight:
Need to add a caveat here. To my knowledge, only the 91/30 MN has the dovetail beneath rear sight, I know the M44 carbine does not.
The scout scope mount has a dog set screw which is tightened into the recess and no way will the mount move under recoil. As here: 
Many air gun scope mounts have this dog set screw, for air gun recoil is hell for trying to move the mount back instead of forward as on firearms. But the principle remains the same. This is the 30 dollar aperture sight: 