Re: Spotter Rifle
Flat top, 16 (min), 18 or 20" barrel. My 20" barrel runs 500 fps faster than my friend's 16" with the same load, back to back test.
Free floated hand guard, "heavy" barrel for an AR, so a med. sporter weight for a bolt action type rifle.
Adjustable cheek piece and collapsable stock. Top it with some quality glass with a max magnification in the 12x realm, that should handle things pretty well I'd think.