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The Ultimate Reloading Manual
Wolfe Publishing Group
  • reloading manual
  • alliant reloading data
  • reloading brass
  • shotshell reloading
  • bullet reloading
The Ultimate Reloading Manual

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.333 OKH

.333 OKH
Warning! Notes: Historical Notes: The 333 OKH was developed by Charles O'Neil, Elmer Keith and Don Hopkins in 1945. It is the 30-06 case necked-up to accept 0.333-inch diameter bullets. At the time the cartridge was developed, 0.338-inch diameter bullets were not generally available, but 0.333-inch bullets were. When the 338 Winchester Magnum was introduced in 1958, a variety of .338 bullets became available, which led to rifles made for the 338-06 cartridge. The difference between the 333 OKH and the 338-06 is miniscule and one can use loading data interchangeably. However, the two bullet diameters are not interchangeable. General Comments: The 333 OKH was a very good cartridge, but is now obsolete. (From Cartridges of the World 9th Edition)
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
250 IMR IMR-4350 Subscribe 2,400
Remarks: Energy: 3,200
275 IMR IMR-4895 Subscribe 2,202
Remarks: Energy: 2,960
275 IMR IMR-4831 Subscribe 2,314
Remarks: Energy: 3,270