8.6 Blackout! WHAT!!!

Discussion in 'Handloading and Reloading' started by Mark_Mark, Jan 19, 2022.

  1. Mark_Mark

    Mark_Mark Member

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    Shotshow Announcement of the 8.6 Blackout

    Any guess on the Parent Case?

    1289FC32-2441-4141-AFBF-F338284459D5.jpeg
     
  2. Zahn
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    Zahn Contributing Member

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    Let me (Google) guess... .308 Win is the parent case? :D
     
  3. Mark_Mark

    Mark_Mark Member

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    I hope it a very necked up .223 case
     
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  4. mcb

    mcb Member

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    Its a 338 Federal (a 308 necked up to accept a .338 bullet) with the shoulder set back to allow longer heavy bullets to maximize subsonic performance and is size to work in AR-10 (308) length magazine/actions.
     
  5. troy fairweather

    troy fairweather Member

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    Wait til you see what the barrel twist is.
     
  6. dredd

    dredd Member

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    Holy Cow!!!!! 1:3 Twist !!!!
     
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  7. Mark_Mark

    Mark_Mark Member

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    1:3 ….. oh dang
     
  8. Mark_Mark

    Mark_Mark Member

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    I got TONS of .308 brass!!! make the ammo st then buy the upper! sounds like a plan
     
  9. koni

    koni Member

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    I think it’s a chopped up 6.5 creedmoor necked for .338
     
  10. Demi-human

    Demi-human Member

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    It’s brother? At least a cousin…;)
     
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  11. mcb

    mcb Member

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    With a twist that fast (1:3) its might be hard to use some of the pre-slitted expanding all copper bullets. I have seen some of the all copper sub-sonic bullet open in flight when fired in a 1:3 twist 300 BO. It going to be interesting to see if this new cartridge has the same issue. I have a 1:5 twist barrel in 300 BO that has not had an issue but 1:3 is going to make'em spin for sure.
     
  12. BigBlue 94

    BigBlue 94 Member

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    Whoa. Thats fast. Like really fast. I wonder if its instant or gain-twist. Seems like one application that would really benefit from even a mild implementation of gain-twist. Start it at 1 in 9" and ramp it up from there.

    Ive never heard of anything faster than 1 in 7", but i have not dabbled in the subsonic world.
     
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  13. high country

    high country Member

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    I was watching some videos about this, glad to see some discussion. Definitely an odd bird. Sounds like they are pushing up to 300 grain projectiles, and the shot show coverage made it sound like they were trying to use the rotational energy from that crazy fast twist to improve the terminal performance (no sure how that works even).

    Thinking outside the box for sure, interested to see where that leads. Who's going to go first...?
     
  14. .455_Hunter

    .455_Hunter Member

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    This might be a cartridge development that is actually new territory, and not just repackaging of previous ballistic performance while exclaiming that it's something unique and special (looking at you 6.5mm Manbun, 6mm ARC and 350 Legend). The military and Winchester were at least intellectually honest about the 7.62x51mm NATO/.308 Win attempting to achieve .30-06 performance out of the shorter case.

    A 300 gr .338 bullet at ~1000 fps is not something I can find that has been previously done to any commercial extent. However, I suspect supersonic loads will probably be close to .33 Winchester performance.
     
    Last edited: Jan 19, 2022
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  15. dredd

    dredd Member

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  16. WestKentucky

    WestKentucky Member

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    1:3… do they still call it rifling or at that point do they call it threading. Seems a bit too far into subsonic territory for my tastes.
     
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  17. Mark_Mark

    Mark_Mark Member

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    must be the new Tactical Warrior weapon. Everyone want to be a suppressor operator. What happened to Normal Tactical, hidden in plain sight. I try to blend in as much as possible: long hair, Prius, and only 5:11 slim cut jeans!
     
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  18. Zahn
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    Zahn Contributing Member

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    One article I read said it was more threaded than rifled, and the picture sure seemed to confirm.

    It also didn't look like gain-twist, but pictures can be misleading.
     
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  19. dredd

    dredd Member

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    I believe I saw the same picture.
    It looked like the Acme Threads on a Screw Jack.

    My imagination pictures the rifling stripping/shaving the bullet, rather than convincing it to twist.

    However, I do not have any education in this field to back up my imagination.
     
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  20. Swampman

    Swampman Old Fart

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    1:3" twist definitely doesn't sound cast bullet friendly.
     
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  21. Mark_Mark

    Mark_Mark Member

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    1 twist ever 3 inches . So a 20” barrel will have 6.666 twists that’s bad MoJo!!!

    John 3:16 people!
     
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  22. WestKentucky

    WestKentucky Member

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    Serious question. With twist that aggressive, would it not be exceptionally hard to push out a squib?
     
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  23. Weflyfast

    Weflyfast Member

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    Don't load it HOT....or you will be picking up pieces......
     
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  24. Mark_Mark

    Mark_Mark Member

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    1:3 hot load might create a black hole
     
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  25. AJC1

    AJC1 Member

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    Stack this cartridge in the bin with the new 30 as uninterested.
     
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