This video tests the ballistic penetration of various firearms calibers through a 2500-gallon water tank. Results show that even powerful rounds like .50 BMG and 5.56 NATO fragment or deform significantly upon entering the water, failing to reach a target 6.5 feet away. Smaller calibers like .22 LR and 9mm are stopped with minimal deformation. Approximately 6.5 feet of water provides substantial protection against most common firearms.
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