Target acquisition on a LR rifle, I think youd want to mount above the scope, leaving you with ring cap mounts, or the ring type mount. I have not used either, the zoom works for me(I do not do PRS competitively). I have used, on both small and large frame AR platforms, the Vortex 45° offset mount with mrds. Biggest downfall I find, is mount height when using as a backup. When you cant the rifle, the dot needs to be at proper height or you have to change cheek weld. This leaves us at mounting solution. Some risers are very bulky, and add more screws and such. I'd suggest finding a riser plate that mounts directly to your mrds mounting screws, then attaches to the rail as normal. I used a cheap AT3, because it fit my needs of streamlined, and it has not let me down. These rifles are in cases when they are put up, and see no mercy when they are in use. That's my .02