Howdy,
How do the bases attach to the frame? I recall my brother-in-law (Robin's brother, Mike) using a B-Square base on a M29 and mounting an Aimpoint. After three shots the screws sheared and the optic went over his shoulder.
Bitterroot
Same damm thing. Ebay mount, both screws stripped. Mad. Three shots milder hand loads, over the shoulder. I had the factory open sites and re-mounted. Amazing accuracy. On the way home I stopped at the gun store and priced the Leapold mounts. Too much. I am a novice gunsmith. I re tapped the holes, used longer screws, and drilled and counter sunk the scope mount. Three screws, a little epoxy, and the barrel clamp. That mount is never coming off again. 10.00 in the mount, about 2 hours work. Millet Red dot, 50c piece every time 50y. Hand loads, factory loads, MOA of deer at 100y. Ready.