Again you aren't proving anything.
Your chart shows both types of M2 ball loaded with the same revision number of powder. Hence it's the same. M2 ball is still M2 ball.
Considering we don't the difference in the various revision numbers..we can only speculate.
However considering all the different cartridges you listed are "different" the powder charge will also be different.
But anyways you have drifted way of the OP original question.
Fact - the drawing for Cartridge, Caliber .30 Ball, M2 lists several propellants, some of which are known to be problematic with the Garand, such as IMR 4350, which you didn't what to talk about, because it contradicts your position.
Fact - alternate propellants were used in the loading of M2 Ball, so as to maximize industrial output during wartime.
Fact - there are several reports (from the Caliber .30 era) on dropping the requirement to keep rifle and machine gun ammunition the same, because they aren't, and haven't been exactly the some for a while.
Fact - M1919s work better with higher muzzle pressures than the Garand due to the nature of the recoil booster.
Fact - it is going to be a extremely rare occasion that Garands will use ammunition that is not clipped.
Fact - propellants are tailored to bullets.
The following are assertions based on the facts:
1) Because M2 Ball can be loaded with propellants known to be problematic with the Garand, ammunition loaded with this propellant would be packaged in such a way to make its use in the Garand unlikely (MG belts, or boxed).
2) Because tailoring propellants to bullets optimized performance of the bullets was/is common, a similar tailoring of ammunition to weapons would be desirable, if such segregation could be easily accomplished, which it is, because Garands cannot use ammunition not loaded in clips, and loading clips in the field is impractical.
3) Other ammunition (7.62mm and 5.56mm) is segregated by intended use so as to optimize performance, therefore, M2 Ball was also optimized and segregated.
Gentlemen,
The following is from TM 43-0001-27 titled "Army Ammunition Data Sheets Small Caliber Ammunition" as of April1994 regarding M2 ball
"Use: Machine Guns, Caliber .30, M37, M1919A4 and M1919A6; and Rifle, Caliber .30, M1. The cartridge is intended for use against personnel or unarmored targets".
The only cartridge listed for a specific weapon is M72 Match.
John
Yes, and under M80, you will also find a long list of compatible weapons, however, as I have stated, M80 ball packaged in belts is not the same as M80 Ball packaged loose or in clips, it no longer even uses the same propellant. M80 packaged in belts uses WC846C the "C" means extra calcium carbonate, which is not used in clipped or boxed as the extra calcium carbonate fouls the gas tube of the M110.
TM 43-0001-27 is a 10,000 foot overview of small arms ammunition, it does not get into the finer details of manufacture, sorting, or lot assignment. Using it as a reference on such details on how ammunition is made is like trying to figure out how to make smokeless powder by quoting
Safety Data Sheet for it.
You will also note that TM 43-0001-27 only lists IMR 4895 as the propellant for most of the Caliber .30 sub-types, which in 1994 (the date of the publication) was the sole type used. However, the drawing does list others, so it is not the end-all, be-all source of information.
