The 300 Blackout caliber has become the second most popular caliber for the AR-15, after the 5.56mm/.223 Remington caliber. What the 300 Blackout caliber especially excels in is firing subsonic ammunition to use in conjunction with a suppressor. However, subsonic 300 Blackout ammo is expensive and due to it’s slow subsonic velocity, most loads have rather unimpressive […]
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Source:: The Firearm Blog