28" Proof Research 300 win mag barrel for savage small shank. Proof sendero contour 1:9.4 twist. 43 rounds down the pipe. Broke in properly, cleaned super easy with boretech. Shot awesome with the typical 77 grains of H1000 and 215 Berger. Muzzle is NOT threaded. Have too many win mags so the newest one needs a new home.