Current Shipping Time: 5-8 Business Days

Minuteman Munitions 300 Blackout Ammo Specs:

  • Quantity: Boxes of 30rds
  • Bullet: 220gr Total Metal Jacket 
  • Velocity: 1035ft/s from an 8.5" Barrel - Designed to be subsonic in 7"-10" barrels
  • Casing: Factory-new. boxer-primed brass
  • Manufacturer: Minuteman Munitions Inc.


Improved Design

  • Improved accuracy due to increased muzzle velocity
  • Manufactured using cleaner, faster burning powder
  • Both upgrades enhanced firearm reliability


Important Notes

  • Designed to be subsonic in 7"-10" barrels, it will function in longer barrels but not guaranteed to be subsonic.
  • 300 Blackout functions reliably with Pistol gas length systems.
  • Minimum of 1:7 twist required to ensure projectile stabilization. 


Minuteman Munitions 300 Blackout Total Metal Jacket Benefits:

  • TMJs are the cleanest shooting projectiles available.
  • No exposed lead to create smoke during firing.
  • Does not foul the barrel with lead.
  • Keeps guns cleaner for longer periods of shooting.

Minuteman Munitions ammo is manufactured to satisfy both regular shooters and beginners alike. Our ultra-low-smoke, factory-new ammo shoots cleanly and accurately to ensure consistent results time after time.

Every box is manufactured with personal attention in Kernersville, North Carolina from quality components. With all brass casings, ultra-low-smoke and clean-burning powder, and total-metal jacket (TMJ) bullets, Minuteman Munitions delivers high-quality ammunition without paying brand-name prices.



Write your own product review
  • Best there is

    Posted by Alex Macksey on 8th Jan 2020

    Minuteman's 300BO is by far my favorite. Very consistent, reliable, and clean, at a price that can’t be beat. Lightning fast shipping. Pay no attention to the other guy’s 1 star review, you won’t find a round you like more than this!

  • 300 Blackout 220gr. Subsonic

    Posted by Russ Berry on 25th Dec 2019

    300 Blackout 220gr. Subsonic Is excellent ammunition, works flawlessly in my Daniel Defense DDM4 ISR

  • 300 blk out

    Posted by Joseph Gasparovic on 6th Nov 2019

    Leaving a 1 star review because they lie about same day shipping. I haven't received the ammo to rate but won't buy from again due to shipping not being same day.

    Response: We apologize for the inconvenience, however your order was placed at 1:45pm EST after our 1pm EST cutoff time. The cutoff time is clearly stated on each item.

All ammunition warranty claims are handled on a case-by-case basis. In order to initiate a claim, please contact our Customer Service Department at [email protected] with your ammunition lot number and the details of your issue including the firearm make and model. All Minuteman Munitions ammunition is warranted against material and workmanship defects for up to one (1) year from the purchase date. During the warranty period, we will (at our sole option) repair, replace or refund the purchase price of any defective part or product covered by this warranty when it is returned by the original owner with proof of purchase. All ammunition warranty claims must have a Return Authorization (RA) number assigned before acceptance at our facility for further examination. Please DO NOT send ammunition without obtaining a RA number from our Customer Service Department. NOTE: This warranty does not cover products damaged or rendered defective due to accident, misuse, abuse, modification, water damage, neglect, reloading, improper handling or storage, or failure to follow instructions for use. To return a product, send with transportation prepaid, to: Minuteman Munitions, Inc 7610-B Canoe Rd Greensboro, NC 27409 Prices and/or specifications are subject to change without notice. Warranty only valid to original purchaser if purchased through website or authorized dealer.
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