· Ray Rowden
I think these taper dimensions will work, but 10 inches of length is a little floppy for my tastes.I'd be starting with a 10 inch band with a 5/8 x 3/8 taper. You could also try a 3/4 x 1/2 but i think the lighter might shoot better.
Eight inches of TBG will give you a little more than 1/4 a 31-inch draw length - good performance and durability.
Six inches is close to 1/5 the draw length - better performance with a mild penalty for band life. I'd use this length for actual hunting.
(Edit) Well, actually, I normally cut to 12-inches and draw to about 56 inches.