.276 Cal. / .256 Cal. for the Garand Rifle

[eclancy]

Gentlemen,
This file gives us some data of interest. NOTICE that Ordnance wants to use only a bullet weight of 140 gr. at 2600 fs. This is to be used in BOTH the .276 and .256 Garand Rifles. It also states that Ordnance has ordered the Garand Rifle to be in .30 Cal. So why are they still looking at the .276/.256 Caliber ? I have alot of data on this subject. Remember, I can't post it all.

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Thanks again
Clancy

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[James K]

They didn't say THE Garand rifle (i.e., a rifle design) was to be in .30; they said "one" Garand rifle was to be built in .30 and one in .276 Pedersen.
It was simply a matter of trying to find the best caliber for adoption, a reasonable approach. They also directed development of a .256 caliber which never got beyond the experimental stage. There were at least five different .256 cartridges, but only two were made (in 1927-1928) in any quantity, 1000 rounds each, and apparently were to be used in testing the Bang rifle.

As we know, Ordnance proceeded with work on the .276 rifles (Garand and Pedersen) and finally recommended the .276 Garand for adoption. The COS (MacArthur) vetoed the .276 caliber because of the huge quantity of .30 ammo on hand. The Pedersen rifle could not operate with .30 ammunition and the Garand rifle, when finally adopted as the M1 Rifle, was in .30.

Jim