You could always glass bed the sporter barrel into the larger barrel channel to make it look better. Wrap the sporter barrel in a layer of masking tape, clay at the muzzle end of the barrel channel to keep the bedding materiel in the channel. Put one layer of masking tape of the front of the recoil lug, wax the barrel and recoil lug well and your all set to bed the barrel with Acraglass, Devcon or Marine Tex. The masking tape with allow the barrel to be free floated when the bedding hardens and the tape is removed.