300 Blackout vs 5.56: A Comparison

Headstamp-to-Headstamp is our series aimed at helping you grok everything ammo.

Today, two of the most popular caliber choices for AR-15 style rifles and pistols are in the go-to standard that is 5.56 NATO, and the newer, but no less versatile, .300 AAC Blackout.

Choosing between the two takes a little thought and boils down to the intended purpose the gun is set to fill, with the two calibers being very different in background, terminal ballistics, performance, and use.

By Michael Crites

Michael Crites is el jefe around here. He has spent more than 30 years shooting, learning about guns, and collecting firearms old and new. He holds his Oregon Concealed Handgun License, and enjoys testing products in the back 40 of his farm.

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