Quote:
Originally posted by Lionhound:
PMC Ultramag gave excellent penetration for bullets that were much lighter for caliber than
usual. About 20 years ago, I fired the .44 special load into a block of transparent polyurethane and the bullet very nearly penetrated it completely, resting just under the surface and distorting the far side of the block. It tracked fairly straight and the bullet appeared undamaged. Ball ammo from common military rifle calibers would completely penetrate, but ordinary handgun rounds would not. I would like to have learned more about that ammo, but it disappeared quickly.
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The reason it disappeared was because PMC didn't want to pay the patent owner, Abraham Flatau, for the right to produce it. I assume that this was because anticipated sales didn't seem to warrant the expense, but I don't know much more than that.