My .222 sits on top of a 20 ga. barrel. A savage M24 over and under, this is my coyote calling gun. I used SSGs in the shotgun barrel for close in shots and the .222 for coyotes that don't come in really close.
This is not a ground squirrel or bumble bee shooter. I am happy with a 2.5 inch group with the 2.5 power scope on it.
We don't have "prairie dogs" in Alberta.