Originally designed for Browning's heavy machine gun, the .50 BMG more recently has become an extreme long-range wunderkind.
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22 caliber short hi-res stock photography and images - Alamy
LooseRounds Tests .50 BMG's Penetration On Cars, With Surprising Results -The Firearm Blog
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Would a .50 BMG rifle such as the M82 Barrett have any use in the apocalypse? : r/ZombieSurvivalTactics
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Throwback Thursday: Self-Defense Calibers — Best and Worst Options - The Shooter's Log