T/C barrels come in different contours. Basically it means the barrel (for Encore) starts at 1" and tapers down to X" at the muzzle. Full bull would indicate its 1" all the way to the muzzle. Tapered barrels are lighter, but are weaker, heat up faster, and have more of a tenancy to drift shots around when they get hot. I have a full bull 18" .204 Ruger barrel that is so heavy you literally cannot shoot it accurately off hand with both hands on the rear grip. If it were tapered you may be able to... just depends on how you plan on shooting the thing. Mine is off a bench, bipod, fence post, shooting sticks, etc.