Loads for the .276/.256 for the Garand ?

C

Clancy

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Gentlemen,
This question is a hard quiz type post. In July 29, 1926 Ordnance gave the go ahead for the production of (1) one .30 Cal. Semi-Automatic Rifle based on the Garand design. However, Ordnance was far from giving up on the .276 Cal. and add to that a .256 Cal. for the Semi-Automatic Rifles. So Ordnance also wants the data i.e. Bullet weight, Powder Charge, etc., etc., for both the .276 Cal. and .256 Cal. design Cartridge. Gentlemen, that's the question what was the breakdown for the .276 and .256 Cal. ammo loadout in 1927 ? I know many of you will just past this one by but, it's very, very important in the history and production of the M1 Garand we know today.
I will post the Ordnance file in a few days BUT try to work on this one.
I hope you enjoy

HAPPY "T" DAY to ALL
Some data has been posted before others have not.
Warning, before you go to my sites lower your volume as the opening page contains a sound file which has a loading and firing of the M1 Garand. So if you're at work or home it may be wise to check your volume control.


Gentlemen you know what to do. Push just a little more TIA. Gentlemen your doing a GREAT JOB.

Thanks again
Clancy

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FSS 90% / BW X Speed Div by 1000 = PF
THA 63
 
You can still find .276 Pederson rounds for 7.50$ a round even today. When they started producing them I guess they decided to make a large run "just in case". :)

The Pederson was really a 7mm (.284) round, used IMR "25" powder and a bullet weighting 140 to 150gr and had a speed of about 2400fps at the muzzle. :)

I dont know about the .256 (6.5mm) round though. :(

Dimitri
 
The .276 Pedersen used a 125 grain bullet at 2700fps with 48,000 psi. There was also an experimental 140 grain bullet at 2600fps.
 
See "History of Modern US Military Small Arms Ammunition VolI"Hackley, Woodin.
.276
There were many variations of the .276 Pedersen and at least 3 non Pedersen ctgs.
.256
The.256 Bang was a 30-06 necked to .256 case length 2.45". There were 4 other .256 expt ctgs.
 
Gentlemen,
Very NICE WORK!! You have done what I have been trying to do. Get you guys to "talk" about Ordnance data that others might pick up on. Keep it going.
Thanks again
Clancy
ps Yes Ordnance was playing around with the round for the new Semi-Automatic no pun meant
 
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