5.7×28 Ammo: Ballistics, Loads and Barrel Length
SAAMI standardised 5.7×28 in 2024 at 48,500 psi. Published loads, the pistol-to-carbine velocity gap, and what ATF actually classified as armor piercing.
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Best 9mm Self-Defense Ammo: What the Published Test Data Actually Shows
Federal HST, Speer Gold Dot and Hornady Critical Duty are the right answers — but the usual reason given for them does not survive the published gel data. Manufacturer specs, third-party test numbers and live prices, all sourced.