Might take a look at the one NightForce sells. Same manufacturer, just 'beefed' up a bit and waterproofed to make it mil-spec for NF. A bit more $ due to these mods, but some have had issues with the other units getting water in them, etc. Just something to think about. It usually comes with a mount to fit on a pic or weaver rail. Can usually find a good deal on the web for it somewhere with enough looking.
Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1
Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen
The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz