The Sellier & Bellot 300 AAC Blackout 124 Grain FMJ ammunition (Model V345072) is engineered for target practice, tactical drills, and high-volume range training. Loaded with a 124-grain (8.00 g) Full Metal Jacket projectile featuring a lead core and a CuZn 10 copper-zinc alloy jacket, this cartridge delivers reliable feeding and reduced barrel fouling in standard .300 AAC Blackout (7.62×35mm) chambers. Fired from a 410 mm (16.1 in) test barrel, it produces a supersonic muzzle velocity of 660 m/s and 1,742 Joules of muzzle energy. The factory load utilizes boxer-primed, non-+P reloadable brass cases and comes packaged in 100-round boxes.

Key Features

  • CuZn 10 Full Metal Jacket: Features a lead core wrapped in a copper-zinc alloy jacket (Bullet #2958) to ensure smooth chamber feeding and minimize bore fouling.
  • Supersonic Ballistic Profile: Generates a muzzle velocity of 660 m/s and a G1 ballistic coefficient of 0.379 for flat, predictable trajectories out to 200 metres.
  • Reloadable Brass Casings: Constructed with standard boxer primers and virgin factory brass casings with a cartridge overall length (OAL) of 55.00 mm.
  • Bulk Range Packaging: Supplied in 100-round retail boxes designed for high-round-count training sessions.

Product Specifications

  • Calibre: .300 AAC Blackout (7.62×35mm)
  • Bullet Weight: 124 grains (8.00 g)
  • Bullet Type: Full Metal Jacket (FMJ)
  • Muzzle Velocity (V₀): 660 m/s (~2,165 fps)
  • Muzzle Energy (E₀): 1,742 Joules (~1,285 ft-lbs)
  • Ballistic Coefficients: G1: 0.379 | G7: 0.191
  • Sectional Density: 0.187 lb/in²
  • Cartridge Overall Length (OAL): 55.00 mm
  • Total Cartridge Weight: 15.5 g per round
  • Case Type: Boxer-primed, reloadable brass
  • Packaging: 100 rounds per box

Who is the S&B Sellier & Bellot 300 Aac Blackout 124 Grain Fmj Ammo 100 Rd for?

  • Target shooters and tactical trainers — Requires reliable supersonic feeding and consistent trajectory for high-volume 300 AAC Blackout FMJ ammunition drills, delivered by a 124 grain projectile leaving the muzzle at 660 m/s with 1,742 Joules of energy in a 100-round packaging format.
  • Cartridge reloaders — Uses factory boxer-primed, non-+P reloadable brass cases with a standard 55.00 mm overall length, providing consistent fire-formed brass hulls across 100-round batches of 300 AAC Blackout ammunition.

Less suitable for: Medium-to-large game hunting due to non-expanding FMJ bullet construction that exceeds ethical harvest thresholds, requiring expanding soft-point or polymer-tipped hunting cartridges; and suppressed low-noise shooting, where the 660 m/s muzzle velocity exceeds the subsonic velocity threshold and creates a ballistic sonic crack, requiring heavy 200-grain or 220-grain subsonic loads instead.

SKU SAB42314LP
Model # V345072
Brand S&B
Shipping Weight 1.0000kg

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