BMG .50, might as well have fun too
At least until you have to explain to the Wife why you re-mortgaged the house...
"What's that Honey?"
"Oh, its my new groundhog gun, guaranteed to stop them in one hit"
"How much did it cost Honey?"
"Oh, about a second mortgage and the ammo is a car payment or two"
"CLANG"
"Honey, I need a new iron skillet now"
Huh...
That sounds like it would go over easier at your house than mine...
Much easier, as long as the dog has kibble I have no one else to answer to
Looking at getting a rifle to shoot some groundhogs on my in laws place.