Green Top is hands down the best hunting/fishing shop in Northern VA (and just outside of Richmond, it's not that far north). If anyone is coming up I-95 it's well worth a stop. Very good blackpowder section and you can handle pretty much everything but handguns as much as you want.

Edit - Dang, pretty good prices for these, these, these and these too. Nice to know something in my backyard (sort of) is worth my business.