Either one would be great, Vortex scopes are excellent. Yesterday I finally got a 700 SPS in .308 and put a cheap scope in Weaver mounts just to be able to go out and shoot it. When I can afford it, I was leaning towards a Leupold VXR Patrol 4-12x Ballistic FireDot, but will check out the Vipers as well. I have the cheaper 4-12x Vortex Diamondback on my CZ .22 and it is a joy to look through, bright and sharp from one edge to the other. I plan on shooting man size silhouettes out to 800, I think 12x will be adequate. I guess for 1000 yards and shooting for the smallest groups, more would be better,but 24x seems a bit overkill IMO. A cheaper optic would "washout" at the highest powers, like 18x and above, but if you are planning to spend $750 then a scope of that quality should do o.k. at extreme magnification.
Last edited by sandog; 10-21-2013 at 12:34 PM.