This is an old thread, but i also like the 2.5-8x Nikon. For ~200 you get a ballistic reticle and a target turret. I have one mounted on a 22-250 Striker and have shot less than MOA to 425 yds. with a good degree of consistency in good conditions--
Here it is on a rimfire i often use on PD's--
Also putting one on a custom 243 XP-100 for coyotes to long range, and am sure it'll be just perfect for it.
For colony varmints though at distance i'm partial to the 3-12x Burris, especially in a rear grip configuration. The only issue with this optic is that the eye relief is a bit too long from the prone position off a bipod @ 12x with a center-grip stock.
Edited by sscoyote - April/12/2013 at 16:04