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“Typically .308 bullets will only go through three to four (3-4) jugs at most,” soldiersystems.net reports. “This example shows it going through 13 one gallon jugs, a steel plate, and then another jug. In waterborne operations this general purpose version of the projectile can go over 15 meters underwater and then have positive effects on target.” That depends on your point of view. [h/t thefirearmblog.com]