This guide details a series of ballistic tests conducted on a synthetic sapphire block, one of the hardest known minerals. Starting with smaller calibers like .22 LR and 9mm, the tests escalate to high-powered rifle rounds including 5.56 NATO, .308 Win, and finally .50 BMG. The results demonstrate the extreme durability of sapphire, showing how it withstands impacts from smaller rounds but eventually fractures and shatters under the force of larger, high-velocity projectiles. The testing highlights the material's ability to absorb significant energy, even when shattered.
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