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Sellier & Bellot 300 AAC Blackout Ammo 200 Grain Full Metal Jacket Subsonic - SB300BLKSUBA
Rated 4.6 out of 5 across over 243 verified reviews and growing, with over 177 five-star reviews and growing, this Sellier and Bellot 300 Blackout subsonic 200 grain load is built around a 200 grain Full Metal Jacket bullet. SB300BLKSUBA is Sellier & Bellot’s subsonic 300 AAC Blackout option for shooters who want FMJ training ammunition with controlled subsonic speed.
Why Shooters Choose Sellier & Bellot 300 AAC Blackout
- Subsonic 300 Blackout Load: With a muzzle velocity of 1060 fps, this Sellier & Bellot 300 Blackout subsonic ammunition is designed to stay below supersonic speed for compatible setups.
- 200 Grain FMJ Bullet: The 200 grain Full Metal Jacket uses a standard lead core with a metallic jacket, a common construction for range training and target shooting.
- Built for Training: Sellier & Bellot identifies this load as best for training and target applications, making it a practical choice for repeat range work.
- Boat Tail Design: The boat tail bullet profile is manufacturer-stated to support excellent accuracy without moving into OTM or polymer tip ammunition.
- Gas System Compatibility: This S&B 200 grain 300 Blackout load is designed for reliable feeding and extraction in gas impingement and piston systems.
- Brass Case, Boxer Primer: Brass cases and Centerfire Boxer primers support the familiar construction many shooters prefer for quality range ammunition.
- Flexible Packaging: Available as a Box of 20 or Case of 1000, it works for a quick range trip or a bulk ammo restock.
What Customers Say
Customers rate this ammunition 4.6 out of 5 across over 243 verified reviews and growing, with over 177 five-star reviews and growing.
Very hard to beat for the price !! If you're looking for a round with some weight behind it in subsonic 300 Blackout, this is the round for you! They are very consistent, very clean, and feed very well. I have never had an issue with this ammo.
Jason M.
I think at this point I've got a couple thousand rounds of S&B 200 Grain through several SBRs. Other than it being a little dirty, no issues with this ammo. Not the most accurate but good enough and I've not had any go supersonic...YMMV
Tom M.
Awesome training ammo for my Daniel Defense 300ISR. The 124 grain also runs well in that weapon and is surprisingly accurate in my Daniel Defense DDM4 V11 chambered in 300 Blackout. Hopefully, prices will come back down soon.
John D.
What is the muzzle velocity of this Sellier and Bellot 300 Blackout subsonic 200 grain ammo?
This load has a muzzle velocity of 1060 fps. It also produces 499 ft lbs of muzzle energy.
Is SB300BLKSUBA good for training and target shooting?
Yes. Sellier & Bellot states this 200 grain Full Metal Jacket subsonic load is best for training and target shooting. FMJ bullets are commonly used for range practice because they are built for feeding consistency and target work rather than expansion.
Is this the Sellier & Bellot 200gr FMJ subsonic load for 300 AAC Blackout?
Yes. This is the Sellier & Bellot 300 AAC Blackout 200 grain Full Metal Jacket Subsonic load, listed as SB300BLKSUBA. It is also commonly recognized by shooters as S&B 300 BLK subsonic or Sellier & Bellot 300 Blackout subsonic.
Will it work with different 300 Blackout operating systems?
Sellier & Bellot states this subsonic load is designed for reliable feeding and extraction in gas impingement and piston systems. As with any 300 AAC Blackout ammunition, firearm setup, magazine choice, and suppressor use can affect performance.
Is the FMJ jacket copper or bi-metal?
The jacket is a brass alloy containing copper and zinc, so it is not entirely copper. This matches the manufacturer-supplied information for the Sellier & Bellot 200 grain FMJ bullet construction.
I cannot order this item. What should I do?
If you are having trouble ordering, contact Target Sports USA during business hours and the team can help with a phone order. Thank you for buying bulk 300 Blackout ammo online at Target Sports USA.
About Sellier & Bellot 300 AAC Blackout
Sellier & Bellot 300 AAC Blackout Ammo 200 Grain Full Metal Jacket Subsonic - SB300BLKSUBA pairs a heavy FMJ bullet with brass-cased, Boxer-primed construction. The bullet uses a standard lead core with a metallic jacket, while the boat tail profile helps support accuracy for training and target shooting.
This Sellier & Bellot 300 Blackout 200 grain load is the brand’s subsonic option in this caliber. For shooters using 300 AAC Blackout, subsonic FMJ ammunition is commonly chosen for range work, especially with suppressor-ready platforms where lower velocity and dependable cycling matter.
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| Manufacturer | Sellier & Bellot |
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| Caliber | 300 AAC Blackout |
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| Bullet Type | Full Metal Jacket |
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| Grain | 147 |
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| Muzzle Velocity | 2076 fps |
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| Muzzle Energy | 1406 ft lbs |
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| Manufacturer | Sellier & Bellot |
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| Caliber | 300 AAC Blackout |
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| Bullet Type | Full Metal Jacket |
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| Grain | 124 |
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| Manufacturer | Sellier & Bellot |
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| Caliber | 300 AAC Blackout |
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| Bullet Type | Solid Copper |
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| Manufacturer | Wolf Ammunition |
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| Caliber | 300 AAC Blackout |
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| Grain | 145 |
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| Manufacturer | Magtech |
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| Caliber | 300 AAC Blackout |
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| Bullet Type | Full Metal Jacket |
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| Grain | 123 |
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| Muzzle Energy | 1359 ft lbs |
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For shooters stocking the 300 AAC Blackout category, this Sellier & Bellot subsonic FMJ load offers a focused training and target option within the Sellier & Bellot lineup. Choose a case when you want a deeper bulk ammo supply for range sessions and ongoing practice.
| Field | Details |
| MPN | SB300BLKSUBA |
| UPC | 754908512461 |
| Manufacturer | Sellier & Bellot Ammunition |
| Platform | Rifle |
| Ammo Application | Training / Target Shooting |
| Ammo Type | Subsonic Full Metal Jacket |
| Caliber | 300 AAC Blackout |
| Grain Weight | 200 Grain |
| Quantity Per Package | Box of 20 / Case of 1000 |
| Test Barrel Length | 16 inches |
| Muzzle Velocity | 1060 fps |
| Muzzle Energy | 499 ft. lbs |
| Ballistic Coefficient (G1) | 558 |
| Case Type | Brass |
| Primer Type | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead Free | No |
| Staked Primer | Not Provided |
| Country of Origin | Czech Republic |
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