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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

$10.3900 In stock

No Hidden Credit Card Fees!

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 3 questions Browse 3 questions and 61 answers
Why did you choose this?
GrabAGun Store
Price and positive reviews.
PAUL A on Sep 18, 2019
52 cents a round is a great price for 200gr. SS .300 AAC.
Paul J on Sep 10, 2019
Price and positive reviews.
PAUL A on Sep 18, 2019
good review's, excellent price
Steven M on Sep 14, 2019
52 cents a round is a great price for 200gr. SS .300 AAC.
Paul J on Sep 10, 2019
Cheapest reliable 300 blackout subsonic.
Layton O on Sep 5, 2019
Want to try subsonic
Robert B on Sep 4, 2019
CHARLES S on Sep 4, 2019
Good quality at a good price with flat rate shipping!
Todd D on Sep 4, 2019
Bought because of low price.
Fritz B on Aug 30, 2019
because I have the gun
kevin i on Aug 30, 2019
Price and quality
Kenneth M on Aug 26, 2019
great deal, grabagun always has the best prices and fastest shipping around
michael j on Aug 19, 2019
Great ammo, needed more, runs flawlessly suppressed.
Jonathan G on Aug 16, 2019
Good reviews, nice pricing, low shipping cost.
Eric M on Aug 4, 2019
Set up a PSA 300 blackout pistol for a suppressor. Did some research and tried a few different brands, and i’m very satisfied with the S & B subsonics.
Scott M on Jul 26, 2019
Great subsonic ammo. like all sellier & Bellot.
Ryan C on Jul 20, 2019
needed cheap range ammo
Simon M on Jul 17, 2019
Have been told by many that this is possibly the quietest subsonic 300 blackout ammo.
Gerald W on Jul 15, 2019
I want to try the subsonic rounds in my 300 AAC AR pistol to compare them with the 147 to 150 grain supersonic rounds I have been using.
Ronald H on Jul 14, 2019
Target Shooting/Practice
Kirk P on Jul 6, 2019
Great price on Subsonic 300BLK ammo. I have a suppresser coming soon so this was perfect timing.
Edward W on Jul 4, 2019
A lot better deal than most 300 blackout.
Colton P on Jul 4, 2019
Want to try cheap around just four targets
Kelly H on Jul 1, 2019
terget/break-in of new gun
Kirk P on Jun 27, 2019
Christopher E on Jun 25, 2019
Needed the ammunition for my new gun
Bdp on Jun 24, 2019
Great ammo!
Jeff S on Jun 24, 2019
Price and had good luck with the round in the past.
Randy L on Jun 22, 2019
Great price and shoots well
Jeff V on Jun 21, 2019
Good price for a fairly reliable target/plinking ammo
kevin on Jun 11, 2019
steven b on Jun 11, 2019
Because I bought the gun today from you guys and I didn't have any ammo
David P on Jun 10, 2019
Cheapest 300 subsonic
David C on Jun 9, 2019
Runs flawlessly for quiet shooting fun.
Jeff B on Jun 8, 2019
S&B is a quality, clean burning ammo at an affordable price. I use it regularly for my pistol range/target ammo. Based on that, I decided to try it in my AR.
Randal D on Jun 6, 2019
I've had shotgun shells by the brand that ran well. Quality and Price
Jessie Jamal on Jun 4, 2019
sub sonic
Clifford T on May 30, 2019
great price on a hard to find item
Paul P on May 7, 2019
its a good deal.
Steven W on May 3, 2019
I have found this ammo to be very accurate and had no problems cycling it out of my suppressed SBR. None. Zeroed at 25 yards I can still put a 12 o'clock hold on a 12" piece of steel at 100 yards and hit it every time. GrabAGun isn't the cheapest, but once you factor in the shipping they are! And they have fast delivery.
Robert S on May 1, 2019
Great price!
Sergio E on Apr 30, 2019
Clean shooting and reliable. Best price on the internet!
Ritche R on Apr 29, 2019
needed them
Paul K on Apr 28, 2019
Great price. Will be ordering more
Donta W on Apr 27, 2019
Reputation of the company and the cost of the product.
RAEFORD C on Apr 26, 2019
BOBBY W on Apr 25, 2019
John B on Apr 23, 2019
One of the lowest overall cost (ammo plus shipping) I could find.
Michael B on Apr 19, 2019
Good price from what I was able to find
Zane D on Mar 28, 2019
price. decent range ammo
CHRIS A on Mar 25, 2019
Scott M on Mar 25, 2019
good review's, excellent price
Steven M on Sep 14, 2019
Cheapest reliable 300 blackout subsonic.
Layton O on Sep 5, 2019
This ammo just good for the range?
JOSEPH on May 18, 2019
BEST ANSWER: It is great for the range. Very reliable and consistent. Allows me to practice with Subs at a more affordable price than the subs I would use for hunting and self defense. You just have to take into account the POI shift from your other subs based on bullet weight and design, but these are usually very close to the 208 Grain Hornady rounds I use for hunting or SD.
Muzzle Velocity 1159 fps subsonic?
Danny on Sep 1, 2019
BEST ANSWER: No should be under 1000 FPS
5.0 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Hard to beat.
Excellent in concept and execution. The 220 grain subsonic ammo doesn't stabilize well in most guns and tends to chew up suppressor baffles. This 200gr. projectile stabilizes more efficiently in a 1:8 barrel twist.
September 8, 2019
2 weeks ago
Good ammo for plinking !!
It's hard to find ammo for a .300 blackout for decent prices these days , but S&B offers some of the best on the market for an inexpensive ammo that is both accurate and great for having fun. No it is not Black Hills sub moaammo , but it does the job at half the price. Thank You S&B !!!! And GAG !
September 8, 2019
2 months ago
great price
Won't find any cheaper
July 6, 2019
3 months ago
Great ammo great price
This stuff is worth the money
July 2, 2019
3 months ago
Good Ammo
No issues! Great Price!
July 1, 2019
3 months ago
Accurate and was true sub sonic
May 15, 2019
4 months ago
Very quiet
Very quiet in my 9.5" gun. I use a Sig 7.62 suppressor and you really only hear the action cycling.
April 16, 2019
5 months ago
good buy fast delivery,
April 14, 2019
5 months ago
Good price and reliable.
I've run a couple hundred rounds of S&B thru my 300 blackout AR and never had a problem.
April 14, 2019
5 months ago
great ammo
shoots flawlessly and silently
April 11, 2019
6 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