.300 Blackout SBR project completed...

Suputin said:
Super heavy subsonics are basically pointless. The people advocating them have gotten hung up on the energy equation without bothering to see how subsonics perform downrange.
Click to expand...

When the 300 Whisper was introduced by J.D. Jones (SSK Industries), one of his claims was that the 240 SMKs could be effective against living targets because the long bullets at subsonic velocity would tumble upon impact & cut a large wound channel. A lot of guys shooting deer with it down south claim it to be true.

Personally, I don't think tumbling is something that can be relied on...
 
kombayotch said:
When the 300 Whisper was introduced by J.D. Jones (SSK Industries), one of his claims was that the 240 SMKs could be effective against living targets because the long bullets at subsonic velocity would tumble upon impact & cut a large wound channel. A lot of guys shooting deer with it down south claim it to be true.

Personally, I don't think tumbling is something that can be relied on...
Click to expand...

You're correct, it shouldn't be. A fair number of incidences of the bullet just "pencilling through" without tumbling are reported as well. In my mind it's enough to justifiy keeping hunting loads supersonic.
 
It's highly dependent on velocity and atmospheric conditions. While the bullet may tumble at a given temperature, it may not when it's 20 degrees warmer. Your ammo might also be running a bit faster.

Even if it did tumble, it would have a similar effect to shooting something with broadhead arrow. You'd likely have to track the animal since it wouldn't have the immediate shock and trauma that an expanding supersonic bullet has.
 
2bad4u2 said:
You're correct, it shouldn't be. A fair number of incidences of the bullet just "pencilling through" without tumbling are reported as well. In my mind it's enough to justifiy keeping hunting loads supersonic.
Click to expand...

O come on guys, it will still kill deer just fine with subsonics. A rifle like this is designed for close range anyway. Just put three rounds through the bread basket if your worried or one in the neck spine. A deer with a hole completely through its lungs is already dead. Sure it may run a bit farther before knowing it and leave a smaller blood trail but, its still dead. I watched a doe run 250+ yards after one of my hunting buddies just put 3 rounds just behind her front shoulder. They were from his 300 WSM and were full power 180gr Nosler Partition loads. When we found the deer and gutted it its lungs and heart were jelly, completely destroyed. It still ran at least 250 yards. She was running on pure adrenaline. Hell, guys in the US drop deer with .22lr all the time. Not that I condone .22lr as an effective deer cartridge, just pretty sure a .308 220gr going at 1000-1100fps will do the job too.
 
Tachead said:
I watched a doe run 250+ yards after one of my hunting buddies just put 3 rounds just behind her front shoulder. They were from his 300 WSM and were full power 180gr Nosler Partition loads. When we found the deer and gutted it its lungs and heart were jelly, completely destroyed. It still ran at least 250 yards.
Click to expand...

Got any good fishing stories?
 
I was really more intrigued by the three well placed rounds behind the shoulder from a magnum rifle before the animal started to run...
 
kombayotch said:
I was really more intrigued by the three well placed rounds behind the shoulder from a magnum rifle before the animal started to run...
Click to expand...

O it was running. Running like a hell actually after the first shot. The first shot was at about 100 yards, the second as it crossed over the train tracks at about 60 yards, and the third as it went down the other side of the tracks at about 70 maybe. All three shots were within about a 12 inch circle behind the front shoulder. He was hunkered down in the tall grass in the ditch alongside the tracks. I was 125 yards maybe down the tracks from him. Not too hard of a shot. We shoot deer on the run during pushes all the time. Its not that hard when you get used to it. I once shot a doe out of the air at the top of the arch after it jumped a fence into a field at about 125-150yds. It was being pushed and bounding at top speed. I saw it out of the corner of my eye before it hit the fence. It hit the ground just before the fence, bounded over the fence, touched the ground once on the other side and I shot it at the top of the next arch. All of this happened in about 5 seconds I would guess. It was one of my best shots ever. Hit her just a bit back from the front shoulder.
 
2bad4u2 said:
You're correct, it shouldn't be. A fair number of incidences of the bullet just "pencilling through" without tumbling are reported as well. In my mind it's enough to justifiy keeping hunting loads supersonic.
Click to expand...

the 7.62x39mm has similar tumbling characteristics IIRC?

where the hell is misanthropist with his hand sig line "what handgun should I buy and is ### as good caliber" when you need him? :D
edit: hmm, isn't him. I could have swore he had the link with the rifle ballistics as well.
 
I am hearing that guys are having good luck with the 208 AMAX tumbling in flesh. To a certain extent I can see the plastic tip deforming and causing the bullet to become unstable after impact.

Without tumbling a subsonic bullet will transit an entire deer leaving no more of a wound than if a knitting needle had been pushed through the deer. This would be the same as shootin a deer with an arrow sporting a field tip. Lethality is going to be highly dependant on what structures and organs the bullet may happen to pass through. A pointed rid bullet can even push blood vessels aside without damageing them as it passes.
 
Suputin said:
I am hearing that guys are having good luck with the 208 AMAX tumbling in flesh. To a certain extent I can see the plastic tip deforming and causing the bullet to become unstable after impact.

Without tumbling a subsonic bullet will transit an entire deer leaving no more of a wound than if a knitting needle had been pushed through the deer. This would be the same as shootin a deer with an arrow sporting a field tip. Lethality is going to be highly dependant on what structures and organs the bullet may happen to pass through. A pointed rid bullet can even push blood vessels aside without damageing them as it passes.
Click to expand...

Yeah but, I think it is also about shot placement, distance, and bullet design. With the right hollow point design or a softer core you should be able to get them to open. Plus, even a small hole in the lungs means death from my experience. Dont you remember the old Barnes X bullet? They frequently didnt open up. Especially at non-magnum velocities. I still saw many deer downed with them. Yes, there wasnt the nickel sized exit wound of say a partition but, they were still dead. I just think that one of the major bullet companies needs to design a special .308 200+ grain offering that is designed to open in the 1000-1100fps range. I find that most lung shots on deer go right through anyway and dont leave a very large exit. And, if I try running lighter bullets at faster speeds I get too much meat damage. I once shot a deer with a 140 grain partition out of my 7mm RM in the bread basket and it nearly cut the deer in half. Switched to 160gr. problem solved. Sometimes you dont want that much energy released.
 
7.92X33Kurz said:
Why? This just seems like and odd project. My opinion only.
Click to expand...

Again why?

is taking advantage of a cartridge that burns it's powder in 9" or less to produce a small, fast handling rifle that remains non restricted and can be used in the bush an odd project? I disagree.
 
Them lever action carbines, another design that makes no sense! Short barrels and quick handling 30cals are a fad.
 
7.92X33Kurz said:
Why? This just seems like and odd project. My opinion only.
Click to expand...

Does anyone else see the irony here with this guy's username? lol. The .300 Blackout is ballistically similar to the 7.92x33mm. So, you're against building a SBR based on an intermediate sized cartridge? Interesting. Please tell us why?

na1lb0hm said:
Again why?

is taking advantage of a cartridge that burns it's powder in 9" or less to produce a small, fast handling rifle that remains non restricted and can be used in the bush an odd project? I disagree.
Click to expand...

A man of reason. We're on the same page. ;) That's exactly why I built this SBR. Honestly, I hope it inspires others to build their own bolt gun SBR.


Paulinski said:
To all the haters here...

"Don't hate - appreciate"

Not your thing then STFU and move on to something u like...
Click to expand...

Some guys get it - some don't. To each their own. I'll never own a long barrelled rifle ever again. 20" and less serve my purposes just fine.
 
Last edited:
kombayotch said:
The bullets do exist, but not from a major mfg.

http://outlawstatebullets.com/2.html
Click to expand...

Cool, thanks for the link. I am sure other companies will follow suit because of the rising popularity of the subsonic offerings. Namely the 300BLK. I would like to get a short barreled 300BLK one day as well. Too bad semi-auto center fire is limited by barrel length as I think a 10.5" RA XCR in 300 Blackout would be the perfect deer pushing gun. O well, have to stick to my original plan and get a Keltec RFB for that purpose. :D
 
It's as clear as the air we breath that the 300BLK round is the best under 600 meter (AKA CQB) round ever to be invented. I mean the accuracy of a 556 but with the stoping power of a x39 that can work just as good as a 308 sub sonic???
300blk_556pic_2-tfb.jpg

http://www.hornady.com/store/300-Blackout-c/
http://www.northwestfirearms.com/general-firearm-discussion/40076-300-blackout-round.html
[youtube]c1FIs0FDmFQ[/youtube]
[youtube]d8CPdx564wA[/youtube]
Now the only thing that can make this round epic is if NATO finnaly gets off there butt to adpot this round and drop the 556. Naaa...
Sorry to much to drink right now.
 
You must log in or register to reply here.
Back
Top Bottom