[joegoeny]

Frankly, I don’t know if STONE bullets would work or not.
(I would guess that stone/granite would damage your barrel.)

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That is why I would put metal jacketing on it, something to think about. The other thing is a sabot round, I know the government was looking into small sabots, such as would fit a .50 or even a NATO 7.62. Their problem was that it would bounce around in the barrel. I know that shotguns have used slugs but a sabot fleschette would have different ballistics and there is no way to trace the barrel. That is where my mind is going on this.

[TMN78247]

Have you considered GLASS as the projectile inside a soft lead sabot??

Yours, TMN78247