.380 ACP: The Biggest Little Caliber
The .380 ACP, developed by John Browning in 1908, remains a dominant caliber for pocket pistols due to its size and weight advantage over 9mm, despite lower power. Modern polymer-framed designs like the Ruger LCP have revitalized its popularity for concealed carry. Ballistic testing shows .380 ACP often struggles to achieve optimal expansion and penetration simultaneously, with some loads like Hornady XTP prioritizing penetration.












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