This Underwood Custom Competition 300 AAC Blackout 220gr load is sold as a 20-round box (Underwood part no. 419). This Underwood 300 AAC Blackout (7.62x35mm) load is a heavy 220-grain subsonic match round built around a Custom Competition hollow point boat tail bullet. Underwood describes the bullet as pairing precise competition jackets with ultra-precise lead-alloy cores, with a small meplat that cuts drag and a pronounced boat tail for efficient flight across a wide range of velocities. Rated at 1030 fps, it is suited to suppressed and target shooting where velocity stays under the speed of sound.

Key Specifications

• The chambering is 300 AAC Blackout, so this load is only for firearms chambered for that cartridge.
• Bullet weight is 220 grains, the weight Underwood loads this Custom Competition round with.
• The bullet is a Custom Competition hollow point boat tail match design, the profile Underwood builds this load around.
• Bullet construction is a copper jacket over a lead core, which Underwood lists as containing lead.
• Muzzle velocity is rated at 1030 fps, the speed Underwood publishes for this load.
• Muzzle energy is rated at 518 ft-lbs, a figure that follows from the bullet weight and velocity.
• The case is nickel-plated brass, the case material Underwood lists for this loading.
• Underwood classes the velocity as subsonic, meaning it stays below the speed of sound.
• Underwood states this ammo is safe to use in a suppressor, which matters if you shoot suppressed.
• Each box holds 20 rounds, the quantity you receive with this listing.

Frequently Asked Questions

Is this a subsonic load? Yes. Underwood rates it at 1030 fps and lists its velocity class as subsonic.

Can I shoot it through a suppressor? Yes. Underwood states that this ammo is safe to use in a suppressor.

What bullet does it use? A 220-grain Custom Competition hollow point boat tail with a lead-alloy core.

Buy the Underwood Match 300 AAC Blackout 220gr Hollow Point Boat Tail Ammunition, 20-Round Box

Underwood loads are built for shooters who care what leaves the barrel, and this Custom Competition round is a clear example of that. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more rifle ammunition while you are here.