The great thing about Bansners is you can change them anyway you want if you don't mind a little fiberglass work. To narrow the fore end just cut the barrel channel out with a dremel cut-off wheel. Scrap the foam fill till all you have left is the outer shell. With the barreled action in the stock, take a heat gun carefully and evenly to the fore end and squeeze it as close to the barrel as you want. Tape it, use rubber bands, whatever until it cools. Tape the barrel, wax it, and use some foam in a can from the hardware store to fill the barrel channel. After that dries, you can scrap a little away to use a layer or two of epoxy soaked glass cloth to rebuild, and then bed as you normally would. Simpler than it sounds. Then you don't have big landing strips along side your skinny barrel.