Shield said their microsight could withstand 458 wm recoil “ absolutely” when I emailed them about it.
Would not fit on a weaver base so I filed and epoxied a pic sight base to a weaver base and put it in the front ring base of a rem model 7. Also had it on the weaver base on a rem 721 for the same sort of thing and the 220 grain loads didn’t bother it.
I had originally bought it to go with a S/S jury 458 wm that was going to finish at 20 inches and a ruger m77 mkII 338 wm. I was ultimately more concerned about any rails available for that rifle than the sight itself.
Vortex venom will work on a weaver base, shield dots are smaller and lower profile but have a thick “ recoil lug” in the middle of the mounting screw that only lets them fit a picatinny.
Using aimpoint mounts and certain sight bases will work for some rifles but position the sight in a forward position. I find on the rear base it’s more like using a peep, depends entirely on the stock I would guess.