The great choice for all of your .458 builds.
.458 lott, .458 win mag, .458X2'' and others i cannot think of for the time being.
These barrels feature a 1.200" shank, and a traditional sporter taper to a 0.750" muzzle daimeter at 26". These blanks are 27" long, made by the Wilson Arms barrel company and are button rifled.