Testing Sig’s .300 Blackout Short Barrel Loads

By Josh Wayner

The Sig Sauer BLK SbR Elite Copper Duty Ammo brings 120-grains to the table. (Photo: Josh Wayner)
Sig Sauer recently released a new 300 Blackout ammo offering for shooters looking to elevate their short barrel game. The 300 BLK SBR Elite Copper Duty Ammo aims to bring more capabilities to AR shooters, delivering a new round designed specifically for short-barrel firearms. As something of an ammo guy, I wanted to bring the Guns.com readers an in-depth look at the brand-new Sig Sauer 300 Blackout 120-grain Short Barrel load.
Unpacking the Sig 300 Blackout
While the box is relatively unassuming, what lies within is anything but. The load is visually appealing and features a long, slender copper projectile, blackened brass, and a silver primer. The cartridges resemble classic Russian military ammo. Unlike the old Soviet ammo, the Sig load is not lacquer coated.
Russian ammo cases were traditionally made of steel and had a thin coating on them to allow for extraction and to reduce wear on the gun. Sig’s opts for a brass case with a dark, non-reflective wash. This quality is both attractive and distinct from other 300 Blackout ammunition.
Surprisingly, most makers do not build 300 BLK ammo for short barrels despite the

Source: Guns.com