Ammo Inc 300 Blackout 150 Grain FMJ ammunition in 20-round boxes, ready for range work and tactical training with subsonic and supersonic rifle platforms.
Ammo Inc 300 Blackout 150 Grain FMJ is centerfire rifle ammunition loaded with full metal jacket bullets in twenty-round boxes. This cartridge fits .300 Blackout chambered rifles and pistols for range practice, training drills, and target shooting.
The 150-grain bullet weight bridges the gap between lighter supersonic loads and heavier subsonic rounds. Full metal jacket construction feeds reliably through semi-automatic actions and leaves steel targets cleaner than soft-point or hollow-point designs.
This ammunition suits shooters running .300 Blackout AR-15 platforms, bolt-action rifles, and pistol-caliber carbines chambered in this cartridge. The twenty-round box format works well for load testing, zeroing optics, and range sessions where you want to track round count closely.
Key Facts
Caliber: .300 Blackout
Bullet Type: FMJ (Full Metal Jacket)
Grain Weight: 150 Grain
Rounds Per Box: 20 Rounds
SKU: 300B150FMJ-A20
Understanding 150 Grain Weight in .300 Blackout
The 150-grain projectile sits in the middle of the .300 Blackout spectrum. Lighter loads around 110 to 125 grains run supersonic and deliver flatter trajectories at distance. Heavier bullets from 190 to 220 grains stay subsonic for suppressed shooting.
A 150-grain bullet can run either supersonic or subsonic depending on powder charge, making it a versatile training option. Most factory loads at this weight produce supersonic velocities, which means you hear the familiar crack downrange and get better energy retention past one hundred yards.
FMJ bullets at this weight feed smoothly in magazines and cycle reliably in gas-operated rifles. They punch clean holes in paper and perform predictably on steel without the jacket separation you sometimes see with softer bullet construction after repeated magazine handling.
What to Expect at the Range
Full metal jacket ammunition is purpose-built for practice rather than hunting or defensive work. The bullet does not expand on impact, so energy transfer stays minimal and overpenetration is a consideration on anything except purpose-rated backstops.
Twenty-round boxes let you manage spending when working through drills or testing how a new rifle shoots. You can buy multiple boxes and compare lot numbers if consistency matters for your accuracy goals. This format also works well when introducing new shooters to the platform without committing to bulk purchases.
If you are confirming zero after mounting an optic or testing how your rifle cycles with different bullet weights, call 817-393-4000 to confirm muzzle velocity and ballistic specifications for this specific load.
Buying from Western Sport in Roanoke, TX
Western Sport is a licensed FFL/SOT dealer serving the DFW area and North Texas since 2007. Our gunsmith, Lance Rankin, handles transfers, builds, and technical questions on site. We stock ammunition and firearms for local pickup and transfer.
Call 817-393-4000 for current ordering options, transfer details, or to ask about other calibers and bullet weights. Our Roanoke location works with buyers throughout the DFW region.
Frequently Asked Questions
Q: Is Ammo Inc 300 Blackout 150 Grain supersonic or subsonic?
A: Most factory 150-grain .300 Blackout loads run supersonic, producing velocities above the speed of sound. The exact velocity depends on powder charge and barrel length, so call 817-393-4000 to confirm the performance data for this specific Ammo Inc load.
Q: Will 150 Grain FMJ work in my suppressed .300 Blackout rifle?
A: Yes, FMJ ammunition cycles in suppressed rifles, but 150-grain loads typically run supersonic and produce a sonic crack even when suppressed. If you want true quiet shooting, heavier subsonic loads around 200 grains or more are a better match for suppressor use.
Q: How does 150 Grain .300 Blackout compare to 110 or 125 Grain loads?
A: Lighter 110 to 125-grain bullets fly faster and flatter, making them better for longer shots and smaller targets. The 150-grain weight carries more momentum at close to medium range and tends to perform better in shorter barrels where lighter bullets lose more velocity.
Q: Can I use this ammunition for hunting in Texas?
A: Full metal jacket bullets are legal for some Texas game but are not ideal because they do not expand on impact. Check Texas Parks and Wildlife regulations for the species you are hunting, and consider soft-point or hollow-point designs for more effective terminal performance.
Q: What barrel length works best with 150 Grain .300 Blackout?
A: The .300 Blackout cartridge was designed to perform efficiently in short barrels, and most shooters run seven to ten-inch barrels in AR pistols or eight to sixteen-inch barrels in rifles. Shorter barrels lose less velocity in .300 Blackout than in 5.56 NATO, which makes this caliber popular for compact builds.
Q: Do I need a special magazine for .300 Blackout ammunition?
A: Standard AR-15 magazines designed for 5.56 NATO or .223 Remington work with .300 Blackout cartridges without modification. The case dimensions allow the rounds to fit and feed from the same magazine body, but always confirm your rifle is chambered in .300 Blackout before loading to avoid dangerous cartridge mismatches.
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