lower than dirt

I need a BB gun - a quiet, high-powered BB gun. I also need the skill to field dress a dead squirrel. Why? Because I hate squirrels. And if I could kill a dozen in my yard, the neighbhorhood wouldn't miss them.
I bet they'd taste great. They've fattened themselves on sunflower seeds. There is one squirrel in my neighborhood that's so fat, he can barely jump along the fenceline, and can barely go from the fence to the outbuilding all the rats use to jump into their tree colony.
They would be good with cornbread.
By the way, I welcome any and all emails with suggestions for discouraging the little critters.

--Laura