a 7'x 2"x 2" will always be either riftsawn OR both quartersawn and flat sawn... Turn it 90 degrees, and quartersawn suddenly becomes flat sawn! The way the wood was sawn is completely irrelevant. You need to look for STRAIGHT GRAIN!
Knosaj, "guess the grain would be easy to see" might not be as simple as you think! The wood might be rough (unsurfaced) still, but most of all, reading the grain is more difficult than you might think. Don't confuse the grain of wood with the growth rings. About one in every 25 boards will be good enough to make a selfbow. If the pile of hickory does not satisfy your need for straight grain on all faces of the board, go the pile of maple, ash, elm, white oak...etc.