rickyp,
I have a Super 14 rechambered 44 Magnum barrel to 445 SM. Accuracy has been mediocre, 1.5 to 2.0 at 100 yards. Recoil is furious (I aint a wimp nor am I recoil-sensitive), and the scope will stay in place for about 75-100 rounds.
I have shot cast and jacketed bullets, more than a dozen powders, and every other combination I could attempt to get M.O.A. Aint gonna happen!!! I know there will be many shooters who claim M.O.A. with their 445sgood dealmine wont do such feats. I would absolutely go with a 3-ring system to mount a scope.
I use RCBS 44 Magnum dies to size the brass. By the way, their aint many sources of brass either and it is expensive. I am shooting Starline brass and I get ½ dozen reloads before case head separation occurs. I use the Lee Factory Crimp 44 Magnum die to crimp the bullets in place.
The 445 SM sure aint been my greatest reloading/shooting venture of my lifetime!!! Good-luck with your 445 SM if you get one
BCB