User:Eduardo Olaechea GM/.334 OKH

The .334 OKH (O'Neil, Keith, Hopkins) is a rimless centerfire rifle cartridge designed in 1947 around the .300 Holland & Holland Magnum case by Charles O'Neil, Elmer Keith and Don Hopkins

History
In 1947, Charles O'Neil, Elmer Keith and Don Hopkins, designed and developed the .334 OKH, shooting the same .338" caliber bullets as the former .333 OKH developed two years before, around a necked-up .30-06 Springfield case while the .334 OKH's parent case is the .300 H&H Mag case with a greater capacity that results in higher velocities and flatter trajectories.

By late 50s, Winchester introduced the .338 Winchester Magnum to the american market, which offered a similar performance to the .334 OKH, but capable to be chambered in standard action rifles, same as .270 Win or.30-06 Sprg, thus, chambered in their mass produced Winchester Model 70.

Design and Performance
Base on a large belted magnum case necked up for .338" projectiles and chambered to rifle barrels capable of stabilizing bullets varying from 200 to 300 grain, gives the .334 OKH a 200 feet per second edge to the former .333 OKH, firing similar bullets, resulting in flat trajectories capable of reaching game at longer ranges with enough energy to expand.

Sporting Use
Being very similar to the.338 Winchester Magnum, the .334 OKH is suitable for big game hunting species of different sizes and weights. Currently, the .338 Win Mag is probably the most popular elk cartridge in the United States.