Sellier & Bellot (part no. SB300BLKACS) loads this .300 AAC Blackout round with a standard full metal jacket bullet: a lead core wrapped in a metallic jacket, built for training and target shooting rather than hunting or defense. Sellier & Bellot keeps this a straightforward practice round for AR-platform shooters running .300 Blackout, a cartridge popular specifically because it cycles reliably in a standard AR-15 bolt while offering both supersonic and subsonic loading options. This listing is sold at case quantity, keeping the cost down for high-volume range days. In rifle ammunition built for affordable AR-platform practice, this is a dependable bulk option.

Key Specifications

• The chambering is .300 AAC Blackout.
• The bullet is a full metal jacket, with a standard lead core and metallic jacket.
• This load is built for training and target shooting rather than hunting or defense.
• .300 Blackout is popular for running reliably in a standard AR-15 bolt and magazine.
• The cartridge supports both supersonic and subsonic loadings, though this is a standard-pressure FMJ.
• This listing is sold at case quantity, built for high-volume range use.

Frequently Asked Questions

Is this ammunition subsonic? This is a standard-pressure FMJ training load; .300 Blackout as a cartridge supports both supersonic and subsonic loadings, but this specific round isn’t marketed as subsonic.

Why is .300 Blackout popular for AR-15 shooters? It cycles reliably through a standard AR-15 bolt and magazine without any conversion, while offering both supersonic and subsonic loading options in the same platform.

Buy Sellier & Bellot .300 AAC Blackout FMJ Ammunition

High-volume AR-platform practice in .300 Blackout adds up fast, and case-quantity FMJ like this keeps the range budget in check. Order from our Lubbock, Texas gun shop and it ships fast to your door.