Out of stock
SKU: A300BLK14N
UPC: 810742029029
MPN: 300BLK-14-N
The HSM 300 AAC 150gr BTSP ammunition represents a purpose-built cartridge for modern tactical rifles and law enforcement platforms chambered in .300 Blackout. Designed for shooters who demand reliability in suppressed and subsonic applications, this 20-round per box offering delivers consistent performance across close-to-intermediate distances. Whether you're running barrier-blind duty loads or subsonic training drills, HSM's manufacturing standards ensure uniform chamber pressures and predictable ballistic performance downrange.
Each cartridge features a 150-grain boat-tail soft-point (BTSP) projectile optimized for .300 Blackout's subsonic velocity envelope—typically around 1,000–1,050 feet per second depending on barrel length and powder charge. The boat-tail design reduces base drag and extends effective range, while the soft-point construction ensures controlled expansion on target without over-penetration through intermediate barriers. HSM's quality-controlled reloading process maintains tight tolerances on primer seating, powder charge, and bullet seating depth, critical factors for suppressor-friendly subsonic loads where uniform velocity reduces audible signature variance. The 150-grain weight class strikes a practical balance between recoil management and terminal ballistics in short-barrel rifles.
Law enforcement SWAT teams, military special operations units, and civilian precision rifle competitors favor 150-grain .300 Blackout loads for barrier penetration testing and sound-suppressed training. This ammunition performs reliably in AR-pattern rifles with 16-inch barrels or suppressor-equipped 10.5-inch uppers, as well as in bolt-action platforms. The 25-box case format (500 rounds total) provides economical bulk purchasing for range qualification cycles, training cadres, and operational readiness programs. Shooters should verify their rifle's chamber and function-test with their specific suppressor, as subsonic loads may require adjustments to gas block settings on piston-driven systems.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.