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 centerfire hunting and tactical load engineered explicitly for quiet, high-efficiency deployment in suppressor-ready host firearms. While standard subsonic .300 BLK target rounds rely on non-expanding open-tip match (OTM) or full metal jacket (FMJ) profiles—which punch clean, needle-like holes through medium game with virtually zero energy transfer—the Suppressor Series introduces genuine terminal expansion at low velocities. This specialized 205-grain load (716876205035) balances high sectional density with advanced powder-burn physics, allowing hunters and sport shooters to maximize the sound-dampening capabilities of their cans while delivering a devastating payload on target.
The ballistic core of this precision load is the highly revered Sierra® GameKing® jacketed hollow point (JHP) bullet. Masterfully loaded by Barnes to their exacting performance standards, this 205-grain heavy projectile is meticulously tuned to a stable muzzle velocity of 1,060 feet per second, keeping it safely below the speed-of-sound threshold to eliminate the loud supersonic "crack" that suppressors cannot suppress. Upon impact at subsonic speeds, the soft lead core and engineered copper jacket open reliably to unleash clean hydraulic expansion, dealing 512 foot-pounds of muzzle energy directly into the vital cavity. To address the heavy fouling typically caused by backpressure in suppressed gas-operated platforms like the AR-15, Barnes utilizes an advanced, hyper-clean, clean-burning propellant blend. This chemistry drastically minimizes sticky carbon blowback into the receiver, keeping bolt carrier paths fluid, protecting internal baffle stacks, and preventing gas from driving backward into the operator's face. Loaded in premium, factory-fresh boxer-primed reloadable brass cases, this 20-round box ensures flawless semi-automatic cycling and whisper-quiet performance.
Includes: (1) Factory-Sealed Box of Barnes Suppressor Series .300 Blackout Subsonic Ammunition (20 Rounds per Box).
Key Features
- Subsonic Velocity Optimization: Tuned to leave the muzzle at 1,060 fps to stay firmly below the sonic barrier, maximizing silencer effectiveness and enabling quiet, hearing-safe operation.
- Expanding Sierra® GameKing® Projectile: High-grain jacketed hollow point design delivers reliable expanding performance at low impact velocities where standard projectiles fail to open.
- Advanced Clean-Burning Propellant: Specialized powder formulation reduces gas blowback into the upper receiver, minimizing internal carbon scaling and reducing shooter eye irritation.
- Reliable Semi-Auto Cycling: Pressure curves are specifically balanced to support consistent bolt carrier group cycling in gas-piston and direct-impingement .300 BLK rifles.
- High Sectional Density & Flight Stability: Massive 205-grain mass offers a high G1 ballistic coefficient of 0.480, keeping downrange tracking stable and highly resistant to wind drift.
- Premium Boxer-Primed Brass: Features factory-fresh, parallel-walled polished brass casings fitted with non-corrosive primers for reliable ignition and easy reloading.
Product Specifications
- Brand: Barnes® Bullets
- Product Line: Suppressor Series
- Cartridge Caliber: .300 AAC Blackout (7.62x35mm)
- SKU / MPN: 32519 (Catalog ID: SUP300BLK1)
- Bullet Weight: 205 Grains
- Bullet Type: Sierra® GameKing® Jacketed Hollow Point (JHP)
- Bullet Material: Jacketed Lead Core
- Muzzle Velocity: 1,060 feet per second (fps)
- Velocity @ 100 Yards: 1,011 fps
- Muzzle Energy: 512 foot-pounds (ft-lbs)
- Energy @ 100 Yards: 465 ft-lbs
- Ballistic Coefficient (G1): 0.480
- Ballistic Coefficient (G7): 0.245
- Primary Application: Suppressed Range Training, Tactical Defense, and Medium Game Hunting
- Case Material: Premium Reloadable Brass
- Rounds Per Box: 20 Rounds
- Rounds Per Case: 200 Rounds (10 Boxes)
- Country of Origin: Proudly Made in the USA
- UPC: 716876205035
