The .334 OKH
By Chuck Hawks
Another collaborative effort from the late 1940's by Charles O'Neil, Elmer Keith and Don Hopkins, the .334 OKH is based on the .300 H&H Magnum case. The full length magnum case was given a sharper shoulder and necked-up to accept .333" diameter bullets intended for the .333 Jeffery, an obsolete British medium bore cartridge.
Prolific gun writer Elmer Keith gave the .334 OKH a lot of praise in print, but it never became very popular due to the lack of .333 bullets. I believe that for a while Barnes offered a .333" bullet, but they no longer do.
This is a good medium bore cartridge that was rendered obsolete with the introduction of the .338 Winchester Magnum. After the introduction of the .338 Magnum the bullet makers started offering .338" bullets, and wildcatters abandoned the rare .333 bullet for the now plentiful .338" alternative.
Another drawback was that the .334 OKH required a long magnum action, and the .338 Win. Mag. requires only a standard (.30-06 length) action. Standard length actions are far more common, and less expensive, than .300 H&H length actions. The .334 OKH quickly disappeared. Today, shooters who want a full length .338 Magnum buy a rifle chambered for the commercially available .340 Weatherby Magnum, an improved version of the same basic idea.
Copyright 2005, 2013 by Chuck Hawks. All rights reserved.