265 o.k.h. ?

[howeyhowitzer]

i was wondering if anybody could tell me anything about this cartridge. like how to form brass. loads. etc

 

[kemen4]

Not heard of the 265 ... but the 285 and 333 OKH were made from necked 30-06 cases according to Ackley.

 

[1000yardstare]

O'Neill, Keith, Hopkins (OKH) had some different ideas in case design. The .285 OKH case had an extended flash tube to ignite a duplex load. The .333 OKH used a .333 diameter bullet, not .338. These cartridges died out as more conventional cases and calibers became readily available after WWII.

Ackley does not list a .265 OKH in his "Handbook". If it is based on the .285 OKH necked down and is an original case look for the extended flash tube.