Sellier and Bellot 300 Blackout Subsonic Ammo Review: SBR Ready

The 300 AAC Blackout is unquestionably the most popular cartridge developed to increase the stopping power of the AR-15 carbine. It offers shooters the ability to shoot supersonic and subsonic rounds and experience a full powder burn in only 9 inches of barrel length.

But what really sets the 300 Blackout apart from many other rounds is how well it works with a suppressor. To that end, subsonic 300 Blackout rounds are extremely popular as these cartridges are hearing-safe when used with a silencer.

This has set many 300 Blackout owners to look for new production, inexpensive subsonic loads to feed their hungry AR-15 mags. One such option is Sellier and Bellot 300 Blackout Subsonic ammo, but some shooters wonder if this ammo is good enough for their 300 BLK rifle or if they should look elsewhere.

The short answer is, “Yes, it’s good ammo,” as this rifle ammunition is extremely reliable and can be bought for a great price. But if you want a more in-depth review, make sure to keep reading our Sellier and Bellot 300 Blackout Subsonic ammo review to get all the details on this excellent ammo.

If you’re ready to buy, we have 300 Blackout Subsonic ammo in stock and ready to ship to your door. Otherwise, keep reading for the full review.

Sellier & Bellot 300 Blackout Subsonic Ammo Overview

Sellier and Bellot (sometimes referred to simply as S&B) has been making ammunition since 1825. Headquartered in Vlašim, Czech Republic, Sellier & Bellot is now a subsidiary of the Brazilian company CBC, which also owns Magtech.

S&B has a massive catalog of ammunition that it sells to both Europe and North America. The company produces millions of rounds of rimfire, handgun, shotshell, and rifle ammo every year. Their ammo is brass-cased and Boxer primed, meaning that it’s perfect for reloading.

S&B ammunition is loaded for a wide variety of shooting activities. There’s FMJ ammo for plinking and target practice, match-grade ammo for long-range target shooting, jacketed hollow points for self-defense, and soft point/expanding bullets for big game hunting.

S&B also offers extremely rare and obscure calibers, allowing shooters who enjoy antique firearms a source of factory-new ammo without having to get into handloading. Essentially, Sellier & Bellot is essentially a one-stop shop for all your ammunition needs.

For the 300 Blackout, S&B has four different factory loads in production at the time of writing. There are three supersonic loads loaded with 124 and 147-gr FMJ bullets and a 110-gr TXRG bullet (which is their brand of polymer tip-hunting projectile). Their subsonic load is topped with a 200-grain FMJ bullet that has a muzzle velocity of 323 m/s or 1,060 fps (feet per second).

This ammo was developed for shooters who wanted an inexpensive plinking round for their 300 Blackout rifle or who wanted to shoot hearing safe when using a suppressor.

Our Sellier and Bellot 300 Blackout Subsonic Ammo Review

When I learned I was going to write a review about Sellier & Bellot 300 AAC Blackout ammo, I have to admit that I was excited as I’ve always enjoyed shooting S&B at the range. Their ammo never ceases to disappoint, and I’ve found it to be great ammo that can be had for a great price.

One issue that many early adopters of the 300 Blackout had was finding reliable subsonic rifle ammo. This led many shooters to get into handloading to create their own subsonic loads and swage their own 300 BLK cases from 223 Remington or 5.56 NATO cases.

However, that’s not the case today, as numerous companies like Hornady, Federal, Winchester, and Sig Sauer, make factory-new subsonic rifle ammunition for the 300 Blackout. But just because a lot of companies make it doesn’t necessarily mean that it’s affordable.

One thing that I like about Sellier & Bellot is they load their subsonic ammo with a classic 200-grain full metal jacket boat tail (FMJBT) bullet. This bullet is great because it’s inexpensive but accurate enough for target work.

Sure, I love a great OTM (open tip match) bullet just as much as the next shooter. But sometimes, I just want to blast through a magazine of ammo without having to hear the “cha-ching” of the cash register every time I squeeze the trigger!

What I’m trying to say is that S&B Subsonic 300 Blackout is great if you want to order some bulk ammo without having to get a second mortgage to cover the cost.

S&B uses high-quality materials in all their ammo. Their cases are factory-new, Boxer-primed, and totally reloadable. For me, this ammo is a great option if you love shooting your 300 AAC Blackout SBR or AR pistol on the weekend, as it’s reliable, affordable, and does an excellent job at poking 30-caliber holes in paper or clanging steel targets all day long.

The only downside that you need to consider is that since this subsonic load fires an FMJ bullet, it is not the best choice for self-defense due to the risk of over-penetration. However, for plinking and getting your rifle sighted in, it simply can’t be beat.

What’s It Best For?

This ammo is best for plinking and target shooting. It’s subsonic, so it works extremely well with a suppressor for a hearing-safe shooting experience. It’s reliable, inexpensive, and accurate enough for target work. The brass cases are also reloadable, which is an added bonus.

Disadvantages

Some shooters report that this ammo leaves excess carbon residue in their chambers and barrels. These shooters are often shooting SBRs without a suppressor. Other shooters who report shooting with a 14.5” or longer barrel length or with a suppressor do not report any excessive carbon fouling issues. This ammo can also be difficult to find in stock, as most shooters prefer supersonic ammo.

Pros and Cons

As much as we love ammo, we understand that no manufacturer is perfect. Here are some of the pros and cons of Sellier and Bellot 300 Blackout Subsonic ammunition you should be aware of.

Pros

• Reliable
• Excellent accuracy
• Brass cases are reloadable
• Available for a great price

Cons

• Some shooters report this ammo is dirty when fired through an SBR
• Sometimes hard to find in-stock
• Not the best for self-defense

Cartridge Specs

Variation Review

Sellier and Bellot 300 Blackout Subsonic comes loaded in one configuration. Below you’ll find our review to understand if this ammo fits your shooting needs.

Sellier and Bellot 300 Blackout Subsonic 200 grain FMJ Review

This is the only subsonic load S&B offers for 300 Blackout. It utilizes a 200-grain bullet weight to keep the muzzle velocity below supersonic speeds (1125 feet per second or higher) but still provides reliable feeding and extraction from both direct gas impingement or gas piston recoil systems.

The 200-grain full metal jacket boat tail design allows for excellent accuracy without having to pay for OTM or polymer tip ammo often used by other ammunition manufacturers. This keeps costs down, which is then passed down to the consumer, allowing shooters to maintain their marksmanship skills while not blowing their budget on a bulk ammo order.

From a ballistic standpoint, this ammo has a muzzle velocity of 1,060 fps and a muzzle energy of 500 ft-lbs. That’s not enough for big game hunting, but perfect for range work and target practice.

Overall, this is great ammo that’s available at a great price, goes bang every time, and you’ll hit what you’re aiming at.

Alternatives

Although we love Sellier & Bellot 300 Blackout Subsonic ammo, sometimes it is a little hard to find in stock. So, we’ve come up with a list of some great alternatives that will meet all your shooting needs.

• Federal American Eagle 220 gr OTM
• Hornady Subsonic 190 gr Sub-X
• Winchester Super Suppressed 200 gr Open Tip
• Underwood 220 grain HPBT
• Ammo Inc. stelTH 220 gr TMJ
• Hornady Black 208 gr A-MAX

Ballistics for Sellier and Bellot 300 Blackout Subsonic Ammo

Below we’ve compiled ballistics tables for the Sellier and Bellot 300 Blackout Subsonic ammunition we reviewed in the previous section. Please note that the muzzle velocities listed might vary depending on your barrel length.

Note: This information comes from the manufacturer and is only informational. The actual ballistics obtained with your firearm can vary considerably from the advertised ballistics. Also, ballistics can vary from lot to lot with the same brand and type load.

Parting Shots

Sellier & Bellot 300 Blackout Subsonic 200 grain full metal jacket rifle ammo is a great choice if you’re looking for some inexpensive plinking ammo. It’s very reliable, accurate, and available at a great price if you can find it.

For enthusiasts or regular shooters, considering a purchase of 1000 rounds 300 blackout ammunition could be a smart move, ensuring you have plenty of this dependable ammo on hand for all your shooting activities.

If you’re in need of some ammo to keep your 300 BLK SBR or rifle mags loaded, make sure to check out all our 300 AAC Blackout ammo available and ready to ship to your door here at Ammo.com. Stay safe out there, and we’ll see you out on the range!

Frequently Asked Questions

Below are some questions we get asked a lot here at Ammo.com about Sellier & Bellot 300 Blackout Subsonic ammunition.

Is Sellier and Bellot 300 Blackout Subsonic worth buying?

Yes, this is great ammo that can be had for a great price if you want to shoot a subsonic 200-grain FMJ in your 300 Blackout rifle. It’s reliable, inexpensive, and great for use with or without a suppressor.

What is the range of Sellier and Bellot 300 Blackout Subsonic ammo?

Most shooters consider subsonic 300 Blackout rifle ammunition effective to around 200 to 300 yards.

Is Sellier and Bellot 300 Blackout Subsonic dirty?

Some shooters report that this ammo is dirty when fired through their SBR (short barrel rifle). However, other customer reviews state that their barrel looks clean after shooting several hundred rounds.