What is 300 Blackout Really Good For???

Jerzsubbie

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As I sit here dreaming and waiting for my 30cal can in NFA jail, I'm mentally toying with the idea of a 300blk upper since PSA has a complete one for only $260 and I have a 9mm can rated for subsonic 300.

As I look into it though, it seems like (subsonic) 300blk isn't REALLY good for anything. I've read that it's too weak for hog hunting, can work for deer at close range, factory ammo is limited and expensive so you must reload, and it drops like a rock beyond 100, but it uses .223 mags, AR lowers, and is "movie quiet" when suppressed.

Am I missing anything?
 
In my experience, 300blk subsonic is as good as 45acp.
But is stupid fun in subs with cans. Gotta reload or go broke
 
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In my experience, 300blk subsonic is as good as 45acp.
But is stupid fun in subs with cans. Gotta reload or go broke
I reload 9 and 45, haven't done any rifle yet but if I do get a 300 I'll absolutely reload. No way I'm paying $15-20+ per box for a semi. I can swing that for a bolt gun where I'm only shooting 20rd/day.
 
Yes throwing sledgehammers is fun.

Even shooting 110s at super speed is gun too. Did it today
 
If giggles isn't enough...the round was developed for Suppressed CQB. So, it's about perfect for home/self defense or the proverbial "truck gun".
Bingo. Allows you to run the AR platform with a projectile leathal for CQB in a length that actually works well for the AR gas system and is super quiet.

No, to us mall Ninjas, it means nothing unless something goes bump in the night and you have an 8" one with can to handle the bad guys.

Can you tell I want one?
 
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I enjoy shooting quiet rounds at less than 100 yards..... Not for hunting, just general shooting pleasure. If it didn't perform so good with subsonic rounds, I would have no use for it.
 
I never bought into the hype. From my reading its only advantage over more common options is reliable operation in ARs both sub and super no changes required.

I got one because I was able to put it together for less than $400.

That it takes all standard parts except the barrel is a big plus in my book. I can cast for it and make brass on rainy days, so it should be very cheap. I enjoy the reloading process and casting, so that adds more than just affordability.

Supers should make for an acceptable brush gun on deer. Subs will be fun if I get a can.


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300 Blackout, cause 30cal is America's cal.
And there was a void between carbine and commie that needed fillin'
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If you want accuracy at distance look into the Hornady ELD-X. I can hit steel at 200 yards consistently enough to be happy with the Hornady round nose. With the ELD-X it was almost boringly consistently. My issue right now is my powder isn't generating enough gas to operate subsonic. And waiting for my LGS to get the powder in that I want. It is a lot of fun in an AR. But I hunt with my H&R hands rifle. Looking to get a bolt gun in 300 BLK. Lugging around that AR and hauling it into the tree stand is a hassle when I've got that light handi rifle begging to be used.
 
50 Million AKs can't be wrong!

The 300 BO is not far from the 7.62x39 tens of millions of AK's and SKSs love to ingest...
 
50 Million AKs can't be wrong!

The 300 BO is not far from the 7.62x39 tens of millions of AK's and SKSs love to ingest...
I was specifically talking about subsonic by for supersonic, I agree. It's still a tempting PDW with Supers or Subs.

Thanks for the input guys. I'll probably add a 300blk PDW to my wish list but plan on using my 30cal can so I can shoot supers too. I'm trying to find an excuse to do a 8" barreled AR with the VERT PDW stock ;):cool:
 
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I was specifically talking about subsonic by for supersonic, I agree. It's still a tempting PDW with Supers or Subs.

Thanks for the input guys. I'll probably add a 300blk PDW to my wish list but plan on using my 30cal can so I can shoot supers too. I'm trying to find an excuse to do a 8" barreled AR with the VERT PDW stock ;):cool:

I left mine as a pistol and bought the SB Tactical PDW brace
 
Looking to get a bolt gun in 300 BLK. Lugging around that AR and hauling it into the tree stand is a hassle when I've got that light handi rifle begging to be used.
Check out the Ruger American Ranch Rifle in 300BLK. Threaded 16" barrel, light, accurate, smooth action, nice trigger, $400. I like it better than my 300BLK AR upper. No chasing brass and many more powder choices. Supposedly it can be made even quieter by using faster burning powders that would not work in an AR.
 
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Which one is that and how is the top one a pistol?

@MadMardigan I didn't know about the SB PDW brace, that's not half bad and would prevent me from having to do another SBR lower. Hmmmm...

https://www.sb-tactical.com/product/sbpdw/

I ordered mine elsewhere for cheaper, but I haven't got it yet, it was on backorder. But definitely an option, plus since it's still considered a pistol, it can go in the floorboard for rides as a concealed handgun
 
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From my research, it will not do anything any better than the Russian M43 round, that's right 7.62X39................except a few things in the sub-sonic area, but those loads are like mortar rounds the farther out you get. If I ever feel the need to suppress a 30 caliber intermediate round, I'll stick with what I already have.

just my .02, so take it for what its worth......
 
I was into the .300 Blackout before it was the .300 Blackout. It was the .300 Whisper. JD Jones developed it, IIRC at the request of the US military for an improved sentry removal tool over the then used 9mm suppressed weapons. The wanted more range, as a subsonic 9mm was limited.
So, all along it was designed to be a subsonic, suppressed cartridge. That JD was clever enough to develop it to work in an existing action was arguably genius. The real interesting discoveries were that the 220gr bullets were very efficient, arriving at 100yd. targets with almost no velocity loss due to high ballistic coefficients. And that it could be loaded to higher velocities with lighter bullets, replicating 30-30 performance was a bonus. I wanted one badly for years and finally bought a barrel and dies The barrel was marked .300 Fireball, as an apparent attempt to dodge JD Jones property rights, but it had the same dimensions. The dies were Redding and not correctly dimensioned. The shoulders we're not setting back far enough and a round would not chamber. Redding would deny they were incorrect citing the "wildcat" nature of the round. Eventually, my press and dies were stolen out of one of my houses and this coupled with few available bullets that would expand at the low velocities at the time, I sold the barrel to a local club members brother.
Anyways, taken in context, it's an amazing round. In the big picture, it's a niche product.
 
I hunt with it. Suppressed with 220 or higher Steadfast Ammo. Maybe it is just my can, but none of mine are very quiet.
 
Is there hog hunting around here? I'm near the mountains and have never seen any out.

I've got an 8" AR and an 11" Remington 700 in Whisper/BLK. The 700 is my second quietest gun when shooting suppressed with subs. Only following my CZ452 with subs.

I will say that the AR was another easy lego type build that just plain runs. No issues with being finicky about ammo, gas port size, buffer weights, adjustable this and that or all that other brouhaha that tons of people complain about. It is louder than the bolt gun by a good bit. But I shoot lefty and pretty much have my face right on the ejection port. Supers with can are still quieter than my 5.56/super/SBR AR combo too. That's a plus for a grab and go late night critter getter rifle in my book.

CHRIS
 
Looking to get a bolt gun in 300 BLK

Why?? Assuming that you reload, why not get a .308 and load up or down as you need.

Says the guy that bought a handi rifle in 300blk just because.

Jim
 
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I hunt with it. Suppressed with 220 or higher Steadfast Ammo. Maybe it is just my can, but none of mine are very quiet.
My 10"300BLK (avatar) with subs isn't very quiet either, even with the gas block closed to allow just enough gas to lock the bolt back. I hunt & it's used for home defense with sonic 125 SST's.
 
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Why?? Assuming that you reload, why not get a .308 and load up or down as you need.

Says the guy that bought a handi rifle in 300blk just because.

Jim

Yeah. That's an option too. I have the handi rifle already. Now that I have died and brass for 308 I can just grab either. Nearly picked up a 308 on a smokin deal but couldn't swing it at the time.


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Came across a youtube vid tonight that mentioned 110gr supers which got me thinking again... how does that compare to 55 or 62gr .223. As it turns out, the trajectory of a 110gr @ 2200-2300fps out of a 9" barrel is damn near identical to that of M855 out of a 16" barrel, BUT the .300blk carries an verage of twice the energy beyond 200yds, and still a significant amount more within 200yd. Similar trajectory, better out of short barrels, more energy, and likely not as harsh (super) unsupressed makes it sound like a good all around alternative round. I still don't see a real use for a dedicated subs build, but that's fine.

That said, I probably will play around with it in a PDW type config and work up a nice sub & super load.

http://www.shooterscalculator.com/ballistic-trajectory-chart.php?t=eb5d414d
Velocities of 110gr in 8-9" barrels - http://www.300blktalk.com/forum/viewtopic.php?t=91329
 
@Jerzsubbie I have a 10" 300BLK and 16" if you ever want to test them out.
 
Mine 10" BLK (Avatar) is accurate out to 100 yards with Hornady's 125g SST's- they were A LOT less expensive than the 110's. I haven't tried it further than 100 yrds.
It and a .40S&W are the home PDWs. I had built it to hunt with subs before I knew enough about its lack of quick kill.
 
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