Would the shallow holes hold a dg type scope under the heavy recoil? I think I'd prefer to have a custom barrel anyway, maybe a bit heavier one too take the beast a bit...
They have to, when you have to drill holes over the chamber.
Mine have worked.
4 threads deep and use J-B Weld as thread locker on at least 6 of the 8x40 screws.
As far muzzleward of chamber as possible, with rear part of Picatinny attached by J-B Weld only but
entire rail length glued with J-B Weld, ditto if using factory quarter rib.
Maybe a barrel band or partially circumferential band for mounting the rail onto could be fabricated so as not to interfere with forearm hanger ?
Speaking of which, besides having factory quarter ribs loosen due to recoil with modest scope attached,
I have had the forearm hanger screw strip and bend from a tight hold on forearm and recoil torque.
I fixed that too. The factory screw has 10x32 tpi on end of it and a skinny smooth section that passes through the steel escutcheon embedded in forearm:
Above screw is seated in escutcheon, below the loosened screw retracted as far as possible, threads stop on escutcheon.
Looks like previous owner slipped with screwdriver and made some dents in the wood around hole in wood, not cracks:
Below, the threaded end of screw loosely pushed into escutcheon hole, seen from inside the forearm
where the hanger beds:
A fully threaded screw looks more robust than the wasp-waisted one from factory.
I made another escutcheon and a 5x32tpi X 1" socket head screw (many choices, blacked or stainless,
hex head socket or slotted/phillips/etc.)
to beef up te attachment of a B&C synthetic stock:
