Longrangeshoote1: I have used my ultra accurate Sako single shot bolt action Rifle in 6mm PPC on "Rock Chucks" and it does a dandy job of it.
I use the 70 grain Nosler Ballistic Tips in it for both Prairie Dogs and Rock Chucks.
I have a Leupold 24 power scope on it right now and am looking for a 6.5x20 variable Leupold.
The light recoil and super accuracy of my Rifle makes for a grand "Chuck" Rifle.
Good luck when you get out after the "Groundhogs".
Hold into the wind