cory-
try whistling to make the ground hog stand up, they're not called whistle pigs for nothin. real soft low whistle and they'll usually stand up. I was told thatfemales and young stand cuzthey whistle tocommunicate and a male will stand cuz he'll kill any other male young in the area. don't no for certain if it's true, but I know it works. I used to shoot a lot of hogs in high school with a sweet little ruger 77/22 hornet and 35 grain v-max that left a bloody mess on head shots and were equally deadly on body shots, but not as impressive.

good luck.