I'm looking at a scope for my 6.5 Grendel AR-15 build. I'm honestly looking for what I call, "home and property defense". I'd like to be able to engage targets fairly quickly, and obviously accurately, and be rugged, weather proof and high quality. I live about 40 miles south of the Canadian border in the mid-west, so ability to shoot well and function in temperatures as low as -40F without breaking would be a must. Granted I haven't seen -40F in several years, but if we're talking doomsday why assume the weather would be awesome while the zombies are coming? :) I expect to be slaying zombies in my parka, and not shorts. ;)
I was thinking about getting something in the Designated Marksmen (DM) type of configuration with a BDC reticle or possibly a Horrus or something of that nature.
Distances that I would expect to engage at would be no more than 880 yards (approximately 800 meters).
Last but not least, listening to a few of your podcasts makes me think that I should either A) keep my 5.56 upper and a good stock-pile of ammo, or B) just buy a milspec 5.56 upper with some good iron sights and get myself loaded for bear. :)
Scopes I have in mind for the Grendel are: Tangent Theta 5-25x56 (I don't know how much it costs, but it looks cool so that's half the battle.... right? :))
SWFA SS in a 10 or 12 power
or drop some good cash on an US Optics or something of that nature.