Well my 2nd mag came in today, its a Promag 10 round. It loads the exact same way as the old mag, and all 10 loads fine and it locks in place in the gun, just they're flat and not at an incline.....haven't made it to the range yet to know if they'll fire like this or not. I'm thinking maybe something about the way these mags are made that they just aren't going to sit an incline like most guns.
Smith & Wesson 30-1
Taurus Model 82
Winchester 1400 MK II
D'armes de Guerre 25-06
Sears Model 25 made my High Standard