This video tests the terminal ballistics of bullets cast from J-B Weld epoxy across various calibers. While smaller pistol rounds like 9mm fragmented easily, larger calibers such as .45 ACP, .44 Magnum, and especially .50 BMG demonstrated significant penetration and damage. The .50 BMG round, weighing 262 grains, completely passed through the ballistic dummy, causing extensive bone damage. The conclusion is that J-B Weld bullets, despite their brittle nature, are surprisingly lethal, particularly in high-mass rifle calibers.
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