So a good ole fashioned marksman's rifle.... Well, you got a couple options. The M14 and that family of weapons, the M39, etcetera, you've got the Dragunov and the associated AK series marksman rifles, there's the SCAR-H conversion to a marksman rifle, and some of the MK11 family. Big guns, how big are you lookin? You ain't a big guy, and half of these you ain't gonna be able to carry with the ammo.