Subsonic 300 Blackout, 220 gr, 250 Rounds Bulk, NEW brass, MADE IN THE USA!!! No BS Shipping Charges!

SKU: 300-220-TMJ-New-250-1C Categories: , , Vendor: 1st Cartridge Brand:

SUBSONIC and great to use with a suppressor!!!


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Subsonic 300 Blackout, 220 gr, 500 Rounds Bulk, NEW brass, MADE IN THE USA!!! 

No BS Shipping Charges!

Key Features:

  • 300 Blackout
  • 220 Grain
  • Subsonic
  • New Brass
  • 250 Rounds Bulk Pack
  • Made by 1st Cartridge
  • IN STOCK!!!!!!
  • Tested with an 8.5 inch, 10.5 inch and 16 inch barrel both suppressed and unsuppressed.


300 Blackout ammo is often incredibly hard to find.  To help make stocking up on this precious ammo type easier for the average person, Green Country Ammo proudly offers this 300 Blackout produced by 1st Cartridge. Each package comes with 250 rounds that will not only be a great option for individuals looking for peace of mind while protecting their home but also any individual that is interested in perfecting their shot at the range without spending a fortune. That is why so many people rely on this great bulk ammo option from Green Country Ammo!


In most cases, this product is ready to ship within a week. Although, under times of unprecedented demand, these 300 Blackout rounds may take up to 2-3 business days to ship.


Why Green Country Ammo?

Green Country Ammo is committed to keeping the largest selection of the best 9mm & 223 ammo in stock to meet the unique demands of shooters and law enforcement officers across the country. With bulk ammunition that has been created from some of the top brass brands available, we are sure to have the perfect load type for your favorite firearms. Whether you are looking for rounds for self-defense or just need bulk ammunition for the range, Green Country Ammo has you covered with the best ammo available at a price that will not break the bank!


All ammunition produced by Green Country Ammo or 1st Cartridge undergoes a stringent quality control process that ensures each cartridge is of the highest quality and safety. Most orders ship within 2-3 business days; however, we are a small shop and times may be extended based on currently shipping loads. If you have any questions, please contact us.

Additional information

Weight 25 lbs
Dimensions 6 × 6 × 6 in

1st Cartridge


300 blackout



Case Material





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Vendor Information

Vendor: 1st Cartridge