Four of my rifles are dual-purpose rifles. I use them for both predator hunting and prairie dog shooting. Three of them have Burris Fullfield 6x-18x scopes and the fourth, my .17 Remington, has a Burris Signature 6x-24x.
When I start calling on a stand my scopes are usually turned to 6x. If I have a fast charging predator that won't stop, the scope stays on 6x. If I have a predator that seems inclined to stay out beyond 75 to 100 yards I may crank the scope up to somewhere around 8x to 10x or so. If I have one that hangs up at the 200 yard or more range and I have lots of time, I may even crank it up to 18x.
When I am out praire dog shooting, my scopes are usually up on 14x or higher unless I have a few dumb PDs that are less than 50 yards away--then it is down to 6x or so.
I had an 8x-32x scope on my .17 Remington a couple years ago and that was WAAAAAY too much power. Even 6x, on the low end, is too much magnification for those hard charging predators that won't stop. It's hard to pick out which hair on their body will give you a killing shot as they pass by!! You can't even get the scope focused when they are that close. Don't go to 8x as the bottom power. If you are comfortable with long PD shots at 16x as the top power, then a 4x-16x is the way to go for you. If it is a .223 then 16x at 200 to 250 yards should be plenty for prairie dogs.