These cartridges feature a double venturi shoulder that makes them different from all other rifle cartridges. We separate them out from the other rifle calibers because they have their own special following. We inventory factory standard and wildcat variations of the Weatherby line.

SAAMI specification Weatherby chambers have a fair amount of freebore, this is the factory standard. If you intend to fire factory ammunition, use the standard chamber reamers.

If you want a shorter than standard throat, the gun should be marked as such and Weatherby factory ammo should never be fired in that gun as pressure problems will result.