I'm a big 243 fan, Already have a couple of them. Kinda always wanted a wssm ever since they came out with it. Probably not something you would want to take to a prairie dog town, but they have a chrome lined barrel. Keep it clean and cool, should last plenty long enough.
7tcu would be a fun caliber too. Working on some 110gr loads for my 309JDJ for groundhogs this summer. 2900 or so out of a 14" barrel should work pretty good