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AR15.COM
5/31/2025 6:56:41 PM EDT
[Last Edit: California_Kid][Edited]
This is probably an insane flight of fancy, but here goes.

I recently acquired some very nice solid tungsten penetrators that are made for 20 mm SLAP ammunition used in the Phalanx weapon system.  They are shaped like a typical boat-tail bullet, but with very sharp tips covered a hard plastic caps.  In their intended use, the penetrators have some kind of discarding sabot.

They measure about .4708" in diameter.  A standard bullet for .50 BMG is .510".  It occurred to me that one could construct a copper or brass jacket to bring the diameter of the penetrator up to .510 or so, and hopefully prevent tungsten from contacting the barrel directly.  My initial thought was that a fired .45 Colt case would be about right for a starting point.

Being made of tungsten they are quite heavy - About 10,093 correction 1,093 grains or close to twice the weight of a standard .50 BMG bullet.  Obviously the powder charge would need to be reduced, a lot, to avoid a tragic over-pressure situation.  I have read of some legitimate .50 BMG AP bullets being close to (corrected) 1,000 grains.

This isn't something I would test in MY rifle.  I'm just wondering if anyone has tried this, or heard of anyone who has.  I would cheerfully test the concept in my potato gun or a beater shotgun, but not the AR-50.


Everywhere we go, we are surrounded by people who stumble through life dependent upon the vigilance and/or kindness of others. - Zardoz
6/4/2025 2:41:51 AM EDT
[#1]
Maybe send some to this guy to test he tests all kinds of weird things in shotguns.

TAOFLEDERMAUS he has a youtube channel if you search for it.


8/3/2025 3:16:26 PM EDT
[#2]
I see no reason you couldn't machine a copper or brass base/jacket and press it onto the core. It'd be no different than M855A1 really
10/25/2025 8:59:48 AM EDT
[#3]
Would it be possible to apply an even layer of powdercoat on one of these?
11/25/2025 11:58:23 AM EDT
[#4]
Swage 7mm Rem Mag brass or similar with the penetrator inside.  

Friend of a friend used to swage 7mm mag brass to .510, fill with epoxy and #12 shot for a huge frangible round.  

You can get off the rails with this sort of thing.
"The past is a foreign country; they do things differently there."

L.P. Hartley

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