S&b 300blk 124gr Fmj 20/1000

Sellier & Bellot 300 Blackout 124 Grain Full Metal Jacket ammunition delivers proven performance for subsonic and supersonic applications across military, law enforcement, and civilian shooting disciplines. This Czech-manufactured round achieves a muzzle velocity of 2,165 feet per second with the 124-grain FMJ projectile, balancing terminal performance with consistent chamber pressure and shooter control. The 300 Blackout caliber has become the standard intermediate cartridge for short-barrel rifles, integrally suppressed platforms, and precision rifle builds where velocity flexibility and subsonic capability matter.

The 124-grain full metal jacket construction provides reliable feeding and consistent accuracy across AR-15 derivative platforms and bolt-action systems. Sellier & Bellot ammunition is manufactured to exacting military specifications and field-tested for reliability in combat-adjacent training environments. The FMJ projectile design ensures predictable ricochet behavior on steel targets and minimal barrel fouling, making this round suitable for high-volume training and duty ammunition requirements. Each 20-round box comes factory-boxed for secure storage and transport, with specifications optimized for both supersonic and subsonic ammunition configurations.

This ammunition serves shooters who demand a 300 Blackout load for short-barrel rifle training, operator-level precision work, and suppressed-fire applications. The 124-grain weight sits at the lighter end of the common 300 Blackout spectrum, offering faster velocity than heavier subsonic loads while remaining compatible with both standard and suppressed bolt carriers. Operators evaluating ammunition for short-range carbine systems, close-quarters marksmanship, and suppressor testing will find this Sellier & Bellot offering suitable for extended duty cycles and training regimens.

The 300 Blackout platform has become the preferred intermediate cartridge for modern short-barrel rifle builds, particularly where suppressor integration and subsonic capability define mission parameters. Sellier & Bellot's long manufacturing heritage and NATO-specification ammunition production ensure batch consistency and field reliability. This 124-grain FMJ load complements both duty and training ammunition inventories for shooters who operate across multiple barrel lengths and suppressor configurations.