The Sellier & Bellot 300 Blackout 147 Grain FMJ ammunition features a 147-grain full metal jacket projectile with a listed diameter of 0.308 inches. The cartridge is configured for compatible .300 Blackout firearms and is designated for range and match/competition applications.
The projectile uses a copper-zinc alloy jacket identified as CuZn 10. Its listed sectional density is 0.221 lb/in², while the ballistic coefficients are provided as 0.407 under the G1 standard and 0.204 under the G7 standard. These figures describe the projectile's aerodynamic characteristics under their respective ballistic coefficient models.
The cartridge has a listed overall length of 2.165 inches and was tested using a 16-inch barrel. The listed estimated power factor is 305.3 kgr·fps. Actual ballistic performance can vary depending on barrel length, firearm configuration, ammunition lot, environmental conditions, and other factors.
The full metal jacket projectile is classified as non-expanding. According to the provided specifications, the ammunition is also designed for reliable functioning and to avoid barrel leading. These characteristics form part of the cartridge's intended range and competition configuration.
Users should verify that their firearm is chambered specifically for .300 Blackout and that the ammunition is compatible with their firearm before use. Firearm and ammunition manufacturer instructions should always be followed.
The cartridge's 147-grain bullet, CuZn 10 jacket material, and listed ballistic coefficients provide the primary projectile specifications. The 16-inch test-barrel measurement establishes the basis for the listed performance data.
Specifications:
Caliber: .300 Blackout
Bullet Type: Full Metal Jacket (FMJ)
Bullet Weight: 147 grains
Bullet Diameter: 0.308 inches
Jacket Material: CuZn 10
Sectional Density: 0.221 lb/in²
G1 Ballistic Coefficient: 0.407
G7 Ballistic Coefficient: 0.204
Cartridge Length: 2.165 inches
Estimated Power Factor: 305.3 kgr·fps
Test Barrel Length: 16 inches
Listed Use: Range, Match/Competition
Features: Reliable Functioning, Non-Expanding, No Barrel Leading
Users should comply with all applicable federal, state, and local laws concerning ammunition possession, transportation, storage, and use.
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