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Sellier & Bellot .300 AAC Blackout FMJ Subsonic 200GR 20rds

Sellier & Bellot .300 AAC Blackout FMJ Subsonic 200GR 20rds

Availability: In stock

$10.2900 In stock

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Quick Overview
This 300 Blackout, FMJ Subsonic ammo is one of the highest quality rounds on the market. It is a hard hitting 200 grain round that comes in a 20 round box.


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$12.99 Flat Rate Shipping On All Ammo, Regardless Of Quantity!

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Browse 1 question Browse 1 question and 36 answers
Why did you choose this?
GrabAGun Store
Good price for quality ammo
Jeff S on Jan 20, 2019
clarence m on Jan 16, 2019
Good price for quality ammo
Jeff S on Jan 20, 2019
Great price, good ammo!
Aaron G on Jan 19, 2019
clarence m on Jan 16, 2019
got this at a great price
Steven L on Jan 10, 2019
great price!
Richard C on Jan 9, 2019
cheapest to shoot
Kip P on Jan 7, 2019
great price
Kevin J on Jan 7, 2019
Cheapest shot i have found for 300 black.
James W on Jan 4, 2019
Robert L on Jan 1, 2019
Cheapest subsonic I've found
Robert G on Jan 1, 2019
Good price!
Joseph u on Jan 1, 2019
100% reliable
Mark H on Jan 1, 2019
Price is very good for 300BLK, I figured may as well give it a try.
Mitchell L on Dec 30, 2018
Target practice with a new silencer
daBear49 on Dec 29, 2018
S&B 300 B/O have been flawless for me. The subsonic works great and you cant beat the price. The quality of this ammo is superb for the cost.
Manny C on Dec 27, 2018
great buy
dan r on Dec 19, 2018
great price !
David W on Dec 19, 2018
Need to make more holes in stuff
Michael J on Dec 16, 2018
great price on subsonic rounds.
colton u on Dec 14, 2018
It looks like a good price point for 300BO subsonic ammo. 12.99 shipping cost sealed the deal for me.
Matt W on Dec 13, 2018
Good ammo at excellent price
Jeff B on Dec 7, 2018
Great for Supressed, big and slow
John B on Dec 3, 2018
As with their lighter ammo, feed and function is flawless but also works very well in my Omega suppressor, both accurate and silent.
Bruce P on Nov 26, 2018
Basilio G on Nov 26, 2018
price and muzzle velocity
Brian F on Nov 20, 2018
Cycles well in my short barrel with a suppressor. And the price is right!
Mary H on Nov 20, 2018
Great deal!
Nash C on Nov 2, 2018
Cheap price never fired one
Edward C on Oct 30, 2018
lowest cost I have seen for 300 black out subsonic. What a DEAL!!!
Eugene G on Oct 29, 2018
This is the cheapest price I have seen for subsonic 300aac
William J on Oct 29, 2018
Best quality 300 BLK Subsonic for the price (target, range, etc)
Martin Y on Oct 17, 2018
The Dude on Aug 29, 2018
Great range ammo. Underpowered like most subsonic 300AAC, but if your AR is tuned properly you can now shoot anything (cheap subs and supers all the way up to the expensive stuff). I Will be buying more soon.
Detron P on Aug 25, 2018
Practice rounds
John S on Aug 19, 2018
Cost effective subsonic ammo is hard to find. This deal was too good to pass up.
Kyle E on Aug 18, 2018
Cheap practice ammo that performs well.
Dale W on Aug 9, 2018
Great price, good ammo!
Aaron G on Jan 19, 2019
got this at a great price
Steven L on Jan 10, 2019
5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Slow but shoot nice.
January 12, 2019
2 months ago
Good product would recommendi
January 4, 2019
1 month ago
Great price.
No issues, shot 100 rounds and every round was within a 2” grouping.
December 2, 2018
2 months ago
Consistent Subsonic Ammo
I ran several boxes of this ammo though a Palmetto State Armory AR-15, using a 16" barrel with a pistol length gas system. The rifle is not suppressed. This ammo ran 100% perfectly, zero problems cycling the action, no failures to feed, no failures to extract or eject. Tight groupings down range. I will buy more of this ammo without hesitation. GrabAGun has a great price on this ammo. Buy it.
November 16, 2018
2 months ago
Inexpensive and reliable
Good ammo for the price. Clean , accurate, and reliable. I use them for my plinking and target ammo.
November 14, 2018
2 months ago
Love this ammo, cheap, accurate and quiet. A little dirty but that's a small tradeoff.
October 30, 2018
3 months ago


Sellier & Bellot 300 Blackout Subsonic Features

These 300 Blackout rounds by Sellier and Bellot are 200 grain, full metal jacket subsonic rounds. They have brass casing and come in boxes of 20 rounds. 

S&B 300 AAC Blackout / Whisper SPECIFICATIONS: 

  • Category: Rifle Ammo
  • Caliber: 300 AAC Blackout / Whisper (7.62x35mm)
  • Series: Subsonic
  • # of Rounds: 20 per box
  • Bullet Type: Full Metal Jacket Subsonic
  • Grain: 200 GR
  • Casing Material: Brass
  • Muzzle Energy:  500 ft/lbs
  • Muzzle Velocity 1159 fps


Additional Information

Additional Information

Manufacturer Sellier and Bellot
SKU GAG_SB300BLKSUBA-1398-0149
Condition New in Box
Action Type No
Caliber .300 AAC Blackout
UPC 754908512461
Model Rifle Ammunition
Type No
Manufacturer Part Number SB300BLKSUBA
Accessories No
Barrel Length No
Finish Per Color No
Capacity 20
Firing Casing No
Frame Per Material No
Hand No
Sights No