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300 Blackout - 220gr - TMJ - Factory New (Subsonic)

Minuteman Munitions

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Developed to be Quiet and Precise

Minuteman Munitions 300 Blackout Ammo Specs:

  • Quantity: Boxes of 30rds
  • Bullet: 220gr Campro
  • Velocity: 1030ft/s from an 9" MCX Barrel 
  • Casing: Factory-new. boxer-primed brass
  • Ballistic Coefficient: G1 .373

Minuteman Munitions 300 Blackout Total Metal Jacket Benefits:

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

Improved Design

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

Important Notes

  • Designed to be subsonic in up to 11" barrels, it will function in longer barrels but not guaranteed to be subsonic.
  • 300 Blackout functions reliably with Pistol gas length systems.
  • Minimum of 1:8 twist required to ensure projectile stabilization, 1:7+ is recommended for best accuracy. 




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 with your ammunition lot number and the details of your issue including the firearm make and model. NOTE: If you do not have the lot number we CANNOT process your claim. Be sure to retain lot numbers in the event there is an issue with your ammo. 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.

49 Reviews Hide Reviews Show Reviews

  • 5
    .300 Blackout 220 grain

    Posted by Bill on 17th Jul 2024

    This ammo is impressive. I've purchased several times now and have not had a bad round - very consistent. I like that Minuteman uses shorter barrels to test velocity. And I haven't found any other retailer that compares to Minuteman's price per round along with their flat rate shipping. I will be back for more !

  • 5
    220 gr 300 blkout

    Posted by wayne llorenzo benjamin on 8th Jul 2024

    very quiet very accurate zero malfunctions i will be ordering more, alot more, fast shipping from this company

  • 5

    Posted by Eric on 25th Jun 2024

    Delivered quickly, now have to make time to get to the range and test/compare to other ammo.

  • 5
    Amazing Ammo

    Posted by Eric Varnado on 24th Jun 2024

    I've been through 3 mags of this ammo so far and I have not had a single issue so far, I would highly recommend this ammo!

  • 4
    Ammo looks GTG

    Posted by Jagerhall on 24th Jun 2024

    This is a very decent looking finished product and the price is spot on. I have yet to push any of these rounds downrange. I will update if needed on ant FTF (feed or fire.) Shipping was fast and trackable. Although, when received, the air bladders were broken and 2 of the 3 boxes had completely spilled the contents inside the shipping carton. Not a big deal just took a minute to repack the rounds. Will/would use again.

  • 5
    300 blackout

    Posted by Brent Hudson on 17th Jun 2024

    Great ammo. Clean

  • 4
    300 Blackout Ammo 600 count

    Posted by Tim W. Black on 10th Jun 2024

    Ammo works great. The delivery took longer than expected (eight days), especially since I live one state away. I ordered some different ammo from PSA at the same time and it arrived in two days. Response: Hello Tim! Good to hear that the ammo works great, but unfortunately we are currently back logged a few days and our current shipping lead times can be out to 10 business days. We are working hard to bring that shipping wait down to 1-3 business days. Thank you!

  • 5
    .300 Blackout 220 gr

    Posted by Bill on 15th May 2024

    What can I say? I'm impressed ! This is really good ammo at a great price. Runs clean with no problems in my 9 inch SBR. Flat rate shipping ( other retailers could do this, but won't) Customer service is great! Real people answer the phone - who would've thought it ? I will be a return customer .

  • 5
    600 rounds 300 subs

    Posted by BK on 10th May 2024

    Still waiting on the can so I've only run one mag just to try them out. They all went bang. Good clean brass. Only minor issue was the packaging for shipping. About half the boxes of ammo busted open so most of the rounds were loose in shipping box, but they were all there so not a big deal. Shipping didn't take too long, shipped after 3 business days.