Ok, so I split the difference and went with 42 4/8 as inside spread. I got what would be a 290 bull and a 300 bull. With a error margine of +/- 10 inches since this is my first attempt at scoring. I would have thought they scored the opposite but I guess all those extra inch here and there add up pretty fast, and the mass on the smaller one didn't help it catch up much. Thanks guys.
Brandon