Someone who has one will have to measure as I don't think it's either. The Varmint contour is 0.820" at the muzzle which is bigger than the Hog Hunter, and IIRC the Magnum Sporter is 0.600" or 0.650" at the muzzle. I'm thinking the Hog Hunter used the same profile as the Predator which was around 0.700" or 0.725" at the muzzle.
Bookmarks