I think to get width you will have to do like Virgil said, breed wide to wide and repeat the process over and over. I would guess the best doe line to start with would be a doe's who come's from a farm with mostly wide deer. Dont know that there would be any one line that will be a 100% sure thing for you. If you are going for wide deer dont forget the frame, also look for long beam's and tine length to go with the spread.