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Penetration tech: BAE Systems' new ammo for Our Boys and Girls


Actually, that's only relevant for handguns, and generally in the context of police. If you have to fire in a crowded area, you don't want overpenetration, as you risk injuring civilians. When you're talking about rifle rounds, they almost always overpenetrate, as even intermediate rifle rounds are vastly more powerful than mainstream pistol rounds - and 7.62 NATO is much too large to be considered intermediate.

What's intriguing about this is the trend of penetration over cavitation. They're following the 5.45 model, penetration instead of tumbling and cavitation (causing more damaging wound channels). And they're going for a heavier round as well, for a less flat trajectory. Strange choices to make, really - stuff that the russkies have been doing for decades.

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