There use to be a few high powered scopes(NF8-32&12-42 and a couple of cheaper 32xs) but looking at the prairie dog arsenal these days you'll find a few 12x Leupolds, a couple of 16x IORs, 4 more IOR variables that are set to 18x(The MP-8 reticle is MOA @ that power) and 2 3-9xs that have mildot reticles in them.
One 3-9(Tasco) is on a 22lr that has ben used to get a few dogs past 300 yards in perfect conditions, the mildot really helps! The other 3-9(Sightron) is on a lite CZ in 223 and is my favorite walkabout critter-getter, again the mildot makes it work for me
There is a Leupold 3-9 VX1 on the 17 HMR that works alright but not my first choice of scopes.The x hairs are a little too far apart to use effectivly for holdovers.
For me the 3-9 works great for a walking varminter/calling gun but prefer 12-18x when the range gets past 400 or when shooting targets(prairie dogs off of a bench).