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Very informative & exhausting test on ammo casing and function

Started by techres, January 08, 2013, 06:38:26 PM

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techres

January 08, 2013, 06:38:26 PM Last Edit: January 08, 2013, 06:42:19 PM by techres
A very informative ammo test on casing types and AR performance/wear:

Brass vs. Steel Cased Ammo - An Epic Torture Test

Thought it would help people with that "should I run steel" decision when $ and availability are low.

O0
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Guardian

#1
January 11, 2013, 02:59:10 PM
Thanks. That's the best article I've seen on the matter. I appreciate their ability to remain objective and lay out both sides of the argument. Nicely done.

Pitmaster

#2
January 11, 2013, 11:52:29 PM
techres,

Do you have a link to that steel splatter thread on INGO. I tried to find it and can't. I thought I had bookmarked it.
Pitmaster

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*History of Northampton, Massachusetts: from its settlement ..., Volume 2, Part 2, Chapter 25, Page 359


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techres

#3
January 12, 2013, 11:14:29 AM
Appleseed: Bringing the Past into the Present to save our Future.

DEH

#4
January 28, 2013, 08:22:17 PM
That answers a lot of questions, thanks.
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-2Cor10:4-5. For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds; Casting down imaginations and every high thing that exalts itself against the knowledge of God, & bringing into captivity every thought to the obedience of Christ.

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ItsanSKS

#5
February 14, 2013, 06:23:04 PM Last Edit: February 14, 2013, 06:26:04 PM by ItsanSKS
Of particular note, I think, would be the barrel life of those rifles that were firing the steel-cased ammo.  *Most* steel cased ammo comes with a bi-metallic (steel/copper) projectile, and in this torture test, it was proven to negatively impact the accuracy of the rifles due to premature barrel wear.

Quote from:  from the linked articleAs indicated by accuracy testing, the steel cased/bimetal jacketed ammunition caused accelerated wear to the inside of their respective bores. While the barrel of the Federal carbine had plenty of life left, even after 10,000 rounds at extremely high rates of fire, the Wolf and Brown Bear barrels were subjected to the same rates of fire and were completely "shot out" by 6,000 rounds.

At the end of the test, the chrome lining of the Wolf and Brown Bear barrels was almost gone from the throat forward, and the barrels had effectively become smoothbores, with the rifling near the muzzles acting only as a mild suggestion on the projectiles. A throat erosion gauge could be dropped into the bore from the muzzle end with absolutely no resistance.
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