Gorilla Silverback, 300 BLK 205gr, Self Defense & Hunting Subsonic Ammunition – 20 Round Box 


This product is limited to 5 boxes per customer and shipping address.  

(38 customer reviews)
Locations we cannot ship too: HI, AK, MA, WASHINGTON DC, GA Cities: Garden City, IL Cities: Bensenville, Chicago, Chicago Heights, Cicero, Evanston, Norride, Orlando Park, Schaumburg, Thornton, IL County: Cook County, Maryland Cities: Annapolis, Friendship Heights, Takoma Park NY Cities: New York City, Buffalo, Rochester. We are able to ship to the rest of New York through FFL, CA: Ship to FFL ONLY, RI: Beginning January 1, 2023, a person may only purchase ammunition if they are 21 years or older and have a valid pistol/revolver safety certificate or a Rhode Island hunter education course card issued by the Department of Environmental Management.

In stock

*Adult Signature Required*

Due to component shortages, we are currently using mil-spec primers in some of our 300BLK loads. These primers contain a harder primer cap designed for use in semi-automatic weapons. You may experience lite strikes in bolt action platforms due to the harder primer cap. Please be aware of this issue before purchasing. For safety reasons, we do not allow returns once the product has been delivered. If you would like to check availability of 300BLK ammo for use in your bolt action platform, please contact us before purchasing.  

38 reviews for Gorilla Silverback, 300 BLK 205gr, Self Defense & Hunting Subsonic Ammunition – 20 Round Box 

  1. Chris W (verified owner)

    I Love the ammo and it’s very accurate.I got it for close range hunting and home defense.I’ve never had any reliability issues.The best subsonic ammo in my opinion.

  2. Phil Lee (verified owner)

    I give the 300 blk out, 205 gr, subsonic 4 stars. That’s only because I have only shot targets with it. My 10.5 inch pistol with a Surefire socom 300 suppressor, in a shooting vise, will make a 3 round cloverleaf at 100 yards. I have no doubt that the expansion and knock down power will be just as impressive.

  3. David Brown (verified owner)

    The expansion performed exactly as it stated. There were no feeding or jamming issues. I would definitely buy again.

  4. C. Martinez (verified owner)

    Excellent ammo. I purchased 5 boxes a couple months ago to try it out. Liked it so much I bought 5 more during their Black Friday sale! I’ve been a fan of Gorilla ammo for a while and have tried several of their 300 Blk loads. Never been disappointed yet. High quality, reliable stuff!

  5. Jay Caccese (verified owner)

    Incredible round. Almost silent through a suppressor. Great expansion. It’s my hog ammo under 100 meters.

  6. Michael Leisure (verified owner)

    Bought 2 boxes to try out for last hunting season. Dropped an 11 point and 12 point in their tracks at 25 yards out with suppressor. Great ammo in my opinion. Cycles great in my 16″ upper with no feeding concerns.
    I want more ammo now and this is always out of stock. Even signing up for the email alerts, it is sold out within minutes before I can repurchase. May need to venture somewhere else unfortunately.
    Definitely recommend this hunting ammo if you can get any of it.

  7. ricoscucchi (verified owner)

    Amazing ammo. This is the best Subsonic on the market as far as I am concerned.

  8. Austin

    This ammo has performed extremely well for me. I have shot it suppressed with a YHM Resonator and it sounds like a nail gun. I’ve dropped two hogs with head/neck shots and shot another center mass with a full pass through and good blood trail. Found the hog 40 yards away. The hogs will usually come back because they don’t know what happened. I’ve also used the Barnes 110 Tac-X for farther shots and they will also drop hogs with head/neck shots.

  9. DRTYEAGLE (verified owner)

    Whitetail at 35yrds with a SIG Rattler (5.5 inch barrel and suppressor). Perfect shot through the heart and out the other side, lots of internal damage. Deer dropped 15 yards away. Very comfortable with this inside 35 yards for sure!

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Gorilla Silverback, 300 BLK 205gr, Self Defense & Hunting Subsonic Ammunition – 20 Round Box 

This 300 Blackout Load features our patent pending CNC Swiss Turned solid copper projectile and factory new brass case. This 205gr Lead Free CNC Lathe Turned Solid Copper projectile is designed, precisely manufactured and finely tuned for maximum expansion at subsonic speed. Long gone are the days of tracking game for hours after what you thought was the perfectly placed shot. The Silverback 205gr Subsonic 300 BLK opens up fast in soft tissue and creates incredible wound cavity that make game lay down upon impact. This cartridge is no longer loaded in nickel cases. These projectiles are precisely CNC Swiss Lathe Turned and feature a unique patent pending design. Our Silverback ammunition line creates devastating temporary and permanent wound cavities which are created by the aforementioned solid copper projectiles. The unique design of the projectiles expands quickly and with insane precision. As you probably guessed the Silverback line of ammunition is manufactured with the same incredibly precise loading and inspection process that results in consistency and accuracy unparalleled in the industry. Our ballisticians have tuned this 300 BLK load to preform well in today’s most popular firearms. If you need subsonic ammo that performs, this is it. The Gorilla Ammunition manufacturing process ensures consistency by pairing high end linear loading equipment with multi stage in-process inspections by highly trained machine operators with a final inspection of each and every round by our quality inspectors to ensure only ammunition that meets our rigorous specifications makes it into the box.

Technical Specifications:

  • Caliber: 300 BLK Self Defense
  • Projectile: 205gr Gorilla Silverback Solid Copper Hollow Point
  • Muzzle Velocity: 1040 FPS
  • Ballistic Coefficient: .42 (G1)

Small Arms Ammunition purchasing disclaimer: You must be 21 or older to purchase rifle ammunition. All ammunition is shipped via UPS ground. Always ensure you use the correct ammunition in a firearm in good working condition. It is the responsibility of the consumer to know and comply with State & local laws regarding the purchase and possession of ammunition. Please check your local laws before purchasing.

Click here to browse our selection of .300 Blackout Ammo.

Additional information

Weight 1.1 lbs