First, why is an adjustable comb not an option? Regardless of the wood's figure, an adjustable comb is not something that many folks - if any - consider unattractive on a target shotgun; most serious shooters consider it more of a necessity. After all, a shotgun without some means of adjusting the shooter's eye placement is no different than a rifle without an adjustable rear sight. But you asked for suggestions so how about having the stock bent? I had a highly-figured Beretta 687 stock bent by Allem's Guncraft in Zionsville, Pennsylvania and it made me able to center targets without having the adjustable comb moved all the way right, which made the stock more comfortable to shoot. More cast is easily obtained that way and the person doing the work can tell you how much cast you can gain when he sees how the grain runs in your stock.