Discussion in 'Rifle Country' started by jrfoxx, Oct 3, 2007.
Caliber .30 M2
Ammuniton Lot S. L. 7306
you are correct that AP is is 168gr, and not the same weight as 150gr ball M2 fmj ammo.thanks for confirming that the .42" is correct.Just seemed like that was kinda low, and thus wouldn't have been very useful with that little of penetartion, but maybe I'm WAY off on how thick I THOUGHT the armor on WWII vehicles was...interesting....
Livin in Texas
Just refer to it as m2 ap and everyone should get the idea. Very stable, accurate bullet also.
162 grains +/- . They are much more accurate out of the
Garands than the 150 grain ball ammo. Yearly qualifications
in the Marine Corps, the issue ammo was these 162 grain
I would think that the .30-06 AP would do a lot more than either of those.
There are many, many types of different metals out there however, so that may make a difference in the comparisions.
eliphalet, only with painful results. About 20 years ago, when I was young and stupid, I got ahold of some WWII AP. I set up three or four pieces of half inch steel I dug out of the scrap pile, and touched off a round from about 40 feet away. The hardened steel core punched most of the way through the second piece and nosed into the third. The copper jacket, on the other hand, peeled off when it hit the steel, and flew straight back to hit me right between the eyes. The scar has faded over the years and is pretty much gone now.
armor plate, so penetration in mild steel or most other things will only go up.
Correction: M2 AP has a hardened steel PENETRATOR (core). Most USGI .30 caliber ball bullets made since the middle of WWII have had a MILD steel JACKET (not core) with a copper wash. This includes M2 ball as well as M80 ball. There were only a couple of years in the mid-60's when Lake City reverted back to full gilding metal jackets (copper) but then went right back to copper washed mild steel jackets till production of M2 ended in the 70's.
AP was on average more accurate than ball. Now and then you could find a lot of ball that shot better.
The AP won't compare favorably against modern match bullets and hand loads, though. Guess you can't expect it to.
Penetration-I shot through the narrow part of a piece of railroad rail. That is the only time I ever tried testing AP for penetration.
I used to have a bunch of WWII AP, but sold it. I didn't want to shoot corrosive ammo any more and my reloads were more accurate.
Wasn't 30-06 AP actually more widely issued than Ball for all arms in WWII?
I'd imagine a 1919 or even a BAR loaded with AP could do some pretty good damage against most things.
If the bullet goes through, all is well and good.
If it doesn't, bad things can happen.
A friend in high school (1962) tried to shoot through a foot long section of railroad rail with an 03 and 30-06 AP.
At about 20 yards, the AP core failed to penetrate and bounced back, missing is head by inches.
It completely penetrated the rear fender and trunk liner (bullet hit sideways spinning) of his 55 Ford parked behind him. We found the undamaged AP core laying inside the trunk.
There is no doubt it would have killed him if it had hit him in the head.
Another HS friend lost his left eye when he was about 25 years old.
He shot a bridge railing support at about 15 yards with a .243 and the jacket frags took out his left eye!
So the correct name would be Cartridge, Caliber .30., Ball, M2 or Cartridge, Calliber .30, Armor Piercing, M2. Two different cartridges, but both the second version adopted after the nomenclature change.
It is interesting how AP bullets pentrate. When a bullet strikes a solid object that stops it, its remaining energy is instantly transformed into heat. In the case of an AP bullet striking steel, that heat melts the steel in a small area. If the plate is thin enough, it will be melted or at least softened all the way through. This allows the carbide core, which won't melt, to penetrate. If the plate is too thick, the core will either bounce off or remain stuck when the molten steel "freezes". It was common to see AP bullet cores sticking out of the steel of tank armor; the cores did not penetrate because the armor was too thick for the heat to melt it through, and the cores were trapped when the steel solidified.
(Think about the above and you will figure out why a barrel bursts when a fast moving bullet hits an obstruction.)
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