Shop All - Ammo - 300 Blackout - Heart of Texas Armory

Barnes Bullets

Barnes Suppressor Series 300 Blackout Subsonic Ammo 205 Grain Sierra GameKing JHP 20rd Box - 32519

MSRP: $29.99

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Now: $26.99

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Nosler

Nosler 51275 Match Grade 300 Blackout 220gr HPBT Subsonic - 20 Rounds per Box

MSRP: $44.95

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Now: $36.99

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Remington Ammunition

Remington 28430 Subsonic 300 AAC Blackout 220 Grain Open Tip - 20 Rounds per Box

MSRP: $39.99

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Now: $30.95

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Hornady

Hornady 80897 American Gunner 300 Blackout 125gr Hollow Point - 50 Rounds per Box

MSRP: $67.95

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Now: $58.95

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Armscor Global Defense, Inc

Armscor FAC300AAC2N USA 300 Blackout 208 gr Hornady A-Max - 20 Rounds per Box

MSRP: $28.95

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Now: $20.99

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MAGTECH

Magtech Tactical 300 Blackout 123 Grain Full Metal Jacket - 50 Round Box

MSRP: $49.95

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Now: $37.95

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Fiocchi

Fiocchi Hyperformance SBR Subsonic 300 Blackout 220 Grain Nosler Boat Tail - 20 Round Box

MSRP: $50.95

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Now: $36.95

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Fiocchi

Fiocchi Hyperformance SBR Enhanced 300 Blackout 125 Grain SST - 20 Round Box

MSRP: $28.95

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Now: $23.95

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Federal Ammunition

Federal American Eagle Suppressor Ammunition 300AAC Blackout 220 Grain Open Tip Match - 20 Round Box

MSRP: $35.99

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Now: $29.95

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MAGTECH

Magtech Rifle 300 Blackout 200 Grain Full Metal Jacket Subsonic - 50 Round Box

MSRP: $52.95

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Now: $40.95

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Fiocchi

Fiocchi Range Dynamics Subsonic 300 Blackout 220 Grain Boat Tail Hollow Point Matchking - 25 Round Box

MSRP: $40.95

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Now: $28.95

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Hornady

Hornady 80877 Subsonic Rifle 300 Blackout 190gr Sub X - 20 Rounds per Box

MSRP: $38.44

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Now: $32.95

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Sig Sauer

Sig Sauer Tactical Rifle Subsonic 300 Blackout 194 Grain LEHIGH Defense Maximum Expansion Boat Tail Hollow Point - 20 Round Box

MSRP: $69.99

Was:

Now: $60.95

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Sig Sauer

Sig Sauer Tactical Rifle 300 Blackout 110 Grain Barnes Tac-TX Ballistic Tip - 20 Round Box

MSRP: $44.99

Was:

Now: $38.95

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Hornady

Hornady BLACK 300 AAC Blackout 208 Grain A-MAX - 20 Round Box

MSRP: $39.95

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Now: $27.95

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Sig Sauer

Sig Sauer Elite Performance Match 300 AAC Blackout 125 Grain Open Tip Match - 20 Round Box

MSRP: $32.95

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Now: $27.95

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Sig Sauer

Sig Sauer Elite Performance Match 300 AAC Blackout 220 Grain Open Tip Match Subsonic - 20 Round Box

MSRP: $32.95

Was:

Now: $27.95

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Hyperion Munitions

Hyperion Munitions HMBX-300BLK-220-50 Veteran Ammo 300 Blackout 220 gr Full Metal Jacket - 50 Per Box

MSRP:

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Now: $54.95

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Hyperion Munitions

Hyperion Munitions HMBX300BLK15050 Veteran Ammo 300 Blackout 150 gr Full Metal Jacket - 50 Per Box

MSRP: $39.95

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Now: $33.95

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Fort Scott Munitions

Fort Scott Munitions 300 Blackout Subsonic Tumble Upon Impact (TUI) - 190gr Solid Copper Spun, 20 Rounds per Box

MSRP: $40.95

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Now: $34.78

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Fort Scott Munitions

Fort Scott Munitions 300 Blackout Tumble Upon Impact (TUI) - 150gr Solid Copper Spun, 20 Rounds per Box

MSRP: $40.95

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Now: $34.78

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Sellier & Bellot

Sellier & Bellot 300 Blackout 124 Grain Full Metal Jacket - 20 Round Box

MSRP: $21.95

Was:

Now: $16.95

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Ammo Incorporated

Ammo Inc 300B155BTHP-A20 Match 300 Blackout 155 gr Boat Tail Hollow Point - 20 Per Box

MSRP: $29.95

Was:

Now: $20.95

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Fiocchi

Fiocchi 300BLKHA Hyperformance 300 Blackout 125 gr Super Shock Tip - 25 Per Box

MSRP: $33.95

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Now: $26.95

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Barnes Bullets

Barnes Suppressor Series 300 Blackout Subsonic Ammo 205 Grain Sierra GameKing JHP 20rd Box - 32519

Barnes® Suppressor Series .300 AAC Blackout 205 Grain Subsonic Rifle Ammunition – 20 Round Box – 32519 The Barnes® Suppressor Series .300 AAC Blackout 205 Grain Subsonic Ammunition (32519) is a 2026-spec purpose-built premium...

MSRP: $29.99

Was:

Now: $26.99

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Nosler

Nosler 51275 Match Grade 300 Blackout 220gr HPBT Subsonic - 20 Rounds per Box

Nosler Match Grade 300 Blackout – 220gr Custom Competition HPBT – 51275 The Nosler Match Grade 300 Blackout (51275) represents the pinnacle of subsonic precision for the 300 AAC Blackout platform. In 2026, this loading remains a top choice...

MSRP: $44.95

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Now: $36.99

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Remington Ammunition

Remington 28430 Subsonic 300 AAC Blackout 220 Grain Open Tip - 20 Rounds per Box

Remington Subsonic 300 Blackout – 220gr Open Tip Flat Base – 28430 The Remington 300 Blackout 220gr Subsonic (28430) is a staple for shooters running suppressed AR-15s or bolt-action rifles. In 2026, it remains one of the most widely...

MSRP: $39.99

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Now: $30.95

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Hornady

Hornady 80897 American Gunner 300 Blackout 125gr Hollow Point - 50 Rounds per Box

The American Gunner line of ammunition is a collection of tried-and-true, versatile loads that are popular with shooters for their target shooting, hunting or self-defense needs. Made in the USA with premium components, American Gunner ammunition...

MSRP: $67.95

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Now: $58.95

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Armscor Global Defense, Inc

Armscor FAC300AAC2N USA 300 Blackout 208 gr Hornady A-Max - 20 Rounds per Box

Armscor USA cartridges and components are widely used by the police, military, gun hobbyist, combat shooters and other shooting enthusiast due to its high quality, precise and dependable performance. SPECS: Caliber 300 Blackout Rounds Per...

MSRP: $28.95

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Now: $20.99

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MAGTECH

Magtech Tactical 300 Blackout 123 Grain Full Metal Jacket - 50 Round Box

Full Metal Jacket projectiles are the ideal choice for recreational target shooting and training. When you want great value without sacrificing quality and performance, you can rely on Magtech full metal jacket ammunition to deliver results. 300...

MSRP: $49.95

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Now: $37.95

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Fiocchi

Fiocchi Hyperformance SBR Subsonic 300 Blackout 220 Grain Nosler Boat Tail - 20 Round Box

Precision-tuned ammunition designed and formulated for use in short barrels. Whether you are the owner of a short-barreled rifle, patrol carbine, or arm-brace pistol, each projectile used is specifically selected to deliver the highest ballistic and...

MSRP: $50.95

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Now: $36.95

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Fiocchi

Fiocchi Hyperformance SBR Enhanced 300 Blackout 125 Grain SST - 20 Round Box

Precision-tuned ammunition designed and formulated for use in short barrels. Whether you are the owner of a short-barreled rifle, patrol carbine, or arm-brace pistol, each projectile used is specifically selected to deliver the highest ballistic and...

MSRP: $28.95

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Now: $23.95

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Federal Ammunition

Federal American Eagle Suppressor Ammunition 300AAC Blackout 220 Grain Open Tip Match - 20 Round Box

American Eagle(R) Rifle Suppressor rounds perform to their ballistic peak in suppressed firearms, thanks to carefully selected propellants, bullet weights and primers. Their sub-sonic loading eliminates the super-sonic crack suppressors can't silence. In...

MSRP: $35.99

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Now: $29.95

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MAGTECH

Magtech Rifle 300 Blackout 200 Grain Full Metal Jacket Subsonic - 50 Round Box

Full Metal Jacket projectiles are the ideal choice for recreational target shooting and training. When you want great value without sacrificing quality and performance, you can rely on Magtech full metal jacket ammunition to deliver results. 300...

MSRP: $52.95

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Now: $40.95

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Fiocchi

Fiocchi Range Dynamics Subsonic 300 Blackout 220 Grain Boat Tail Hollow Point Matchking - 25 Round Box

With a thick jacket, improved boat-tail, and long ogive, MatchKing bullets have long been the standard by which all others are measured. Loaded at the state-of-the-art Fiocchi facility in Ozark Missouri, Fiocchi Hyperformance Match ammunition provides...

MSRP: $40.95

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Now: $28.95

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Hornady

Hornady 80877 Subsonic Rifle 300 Blackout 190gr Sub X - 20 Rounds per Box

With its reduced noise and less recoil, Hornady's Subsonic makes an ideal training round for new shooters and provides a more enjoyable and successful shooting experience for anyone. The Flex Tip of the Sub-X bullet, combined with long grooves in its...

MSRP: $38.44

Was:

Now: $32.95

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Sig Sauer

Sig Sauer Tactical Rifle Subsonic 300 Blackout 194 Grain LEHIGH Defense Maximum Expansion Boat Tail Hollow Point - 20 Round Box

Sig Sauer - .300 Blackout - 194GR - Tactical Rifle Subsonic - 20RD Box Sig Sauer Tactical Rifle Subsonic 300 Blackout 194 Grain LEHIGH Defense Maximun Expansion Boat Tail Hollow Point 20 Round Box

MSRP: $69.99

Was:

Now: $60.95

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Sig Sauer

Sig Sauer Tactical Rifle 300 Blackout 110 Grain Barnes Tac-TX Ballistic Tip - 20 Round Box

These all-copper bullets provide destructive power, double-diameter expansion, maximum weight retention, and devastating energy transfer – all with excellent accuracy. The TAC-TX bullet is a special purpose expanding all-copper bullet that is...

MSRP: $44.99

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Now: $38.95

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Hornady

Hornady BLACK 300 AAC Blackout 208 Grain A-MAX - 20 Round Box

Hornady BLACK® ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Loaded with legendary Hornady® bullets, Hornady BLACK® ammunition is designed to fit, feed and function...

MSRP: $39.95

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Now: $27.95

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Sig Sauer

Sig Sauer Elite Performance Match 300 AAC Blackout 125 Grain Open Tip Match - 20 Round Box

Precision supersonic centerfire rifle cartridges. SIG SAUER supersonic rounds feature a 125gr Sierra Match King Projectile for superior accuracy and minimal dispersion when suppressed. Rounds are precision loaded using state-of-the-art, electromechanical...

MSRP: $32.95

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Now: $27.95

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Sig Sauer

Sig Sauer Elite Performance Match 300 AAC Blackout 220 Grain Open Tip Match Subsonic - 20 Round Box

SIG SAUER subsonic rounds feature a 220gr Sierra Match King Projectile for superior accuracy and minimal dispersion when suppressed. Consistent bullet weight retention with minimal velocity variation results from optimized shell case metallurgy with...

MSRP: $32.95

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Now: $27.95

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Hyperion Munitions

Hyperion Munitions HMBX-300BLK-220-50 Veteran Ammo 300 Blackout 220 gr Full Metal Jacket - 50 Per Box

Veteran Ammo – 300 BLK 220 Grain, Full Metal Jacket, Brass casings, projectiles and primers. Packaged in a 50 round box. Excellent ammunition for training or a day of plinking at the range. Veteran Ammo is the ammunition brand produced by...

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Now: $54.95

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Hyperion Munitions

Hyperion Munitions HMBX300BLK15050 Veteran Ammo 300 Blackout 150 gr Full Metal Jacket - 50 Per Box

Veteran Ammo – 300 BLK 150 Grain, Full Metal Jacket, Brass casings, projectiles and primers. Packaged in a 50 round box or 250 bulk can. Excellent ammunition for training or a day of plinking at the range. Veteran Ammo is the ammunition brand...

MSRP: $39.95

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Now: $33.95

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Fort Scott Munitions

Fort Scott Munitions 300 Blackout Subsonic Tumble Upon Impact (TUI) - 190gr Solid Copper Spun, 20 Rounds per Box

Fort Scott Munitions® Tumble Upon Impact® ammunition is an all in one designed cartridge. From hunting, match shooting, to every day carry self defense, this ammunition offers superior results for every occasion. The TUI® bullets are machined...

MSRP: $40.95

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Now: $34.78

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Fort Scott Munitions

Fort Scott Munitions 300 Blackout Tumble Upon Impact (TUI) - 150gr Solid Copper Spun, 20 Rounds per Box

Fort Scott Munitions® Tumble Upon Impact® ammunition is an all in one designed cartridge. From hunting, match shooting, to every day carry self defense, this ammunition offers superior results for every occasion. The TUI® bullets are machined...

MSRP: $40.95

Was:

Now: $34.78

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Sellier & Bellot

Sellier & Bellot 300 Blackout 124 Grain Full Metal Jacket - 20 Round Box

Sellier & Bellot rifle ammunition is designed and field-tested to provide shooters and hunters with the widest selection of caliber offerings and the highest performance projectiles on the market today. 300 Blackout 2,165 Feet per second 124 Grain...

MSRP: $21.95

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Now: $16.95

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Ammo Incorporated

Ammo Inc 300B155BTHP-A20 Match 300 Blackout 155 gr Boat Tail Hollow Point - 20 Per Box

Ammo Inc 155 gr 300 Blackout HPBT Match ammunition in a 20 round box. Other Features: Hyperclean technologyManufactured with match grade technologyUltimate accuracy SPECS: Caliber: .300 Blackout Bullet Weight: 155 gr Bullet...

MSRP: $29.95

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Now: $20.95

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Fiocchi

Fiocchi 300BLKHA Hyperformance 300 Blackout 125 gr Super Shock Tip - 25 Per Box

Accuracy, expansion, and weight retention are mandatory in a quality hunting bullet - Fiocchi delivers all three! Utilizing only the best projectiles on the market, you can be assured of consistent performance and quality with every use. THe tipped...

MSRP: $33.95

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Now: $26.95

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