No problems with a 204 and groundhogs - a top notch rig out to 400 yards and beyond. I get most of my shots at close range - under 75 yards most of the time. Around here they stick to high cover and only come out at the edge once in a while. You have to stalk them and as soon as they see you, they high tail it for the high cover. In the a time past, I could find a few holes and set up and wait, soon enough one would present itself for a shot. That is just not the way it works any more. Too many people taking pot shots at them. My Bother-In-Law has shot at least 10 times at ground hogs in his back yard and missed every time. Now if they see him at all, they are gone. I shot one in my back yard this year with a 221 fireball, but even that is way over kill for these short distances. Good Shooting and Good Luck to you.