Skinnyindian
Well-Known Member
- Joined
- Oct 28, 2017
- Messages
- 271
Have you seen this new round? What is your thoughts on it?
New round 8.6 blackout
- Thread starter Skinnyindian
- Start date
Sounds like a solution looking for a problem. Kinda cool engineering in a tinkery sort of way, but I dunno that it does anything better than a big heavy subsonic bullet. Also doesn't make sense in a bulky ar10 platform
JCDEERMAN
Well-Known Member
I find it interesting they keep trying to develop new rounds after all these years. I'm ok with it, just wish they'd put most of those resources into "already produced ammo" to make it readily available.
ScLowCountry
Well-Known Member
I'm sick of new cartridges. I think we have enough. At least slow down making so many. Once the hype peters out ammo becomes impossible to find and components even become scarce.
I say have at it LOL. The more the merrier. But, I'll just stick to the tried and trues, and keep trying to make what I have better. 
I've never understood why someone would want to use anything other than the conventional, available, and time proven rounds we already have available. But I guess that's part of the fun of this hobby. I wish them all the best.
The only bad thing I see about them is they are a caliber I don't want when they show up in the classifieds.
The only bad thing I see about them is they are a caliber I don't want when they show up in the classifieds.
It wasn't designed to compete with those rounds; it was designed to be a larger caliber, harder hitting subsonic round that was easy to suppress.
Harder hitting than what?
300 BO
Okay.... I see what's going on now.
I don't get it? 
Unless you understand subsonic ballistics, this won't make much sense. If you understand the principles of subsonic ballistics, this makes perfect sense.
Without getting too deep, E=m x V2. In this case, we hold V constant. That is subsonic velocity, let's say 950 fps. To increase energy, then we can only increase mass. In this case, to around 300 gr. Now to bullet design.
A .44 mag can be loaded with 300 gr bullet to 950. But a 300 gr .44 mag ballistic coefficient is about .245. A 300 grain 8.6 is about .750.
You can shoot a 8.6 out of a semi auto. You can shoot an 8.6 at ranges over 400 yards.
There is something to be said for hitting a target at 400 yards in complete silence.
Without getting too deep, E=m x V2. In this case, we hold V constant. That is subsonic velocity, let's say 950 fps. To increase energy, then we can only increase mass. In this case, to around 300 gr. Now to bullet design.
A .44 mag can be loaded with 300 gr bullet to 950. But a 300 gr .44 mag ballistic coefficient is about .245. A 300 grain 8.6 is about .750.
You can shoot a 8.6 out of a semi auto. You can shoot an 8.6 at ranges over 400 yards.
There is something to be said for hitting a target at 400 yards in complete silence.
Same as 300 BO, they make both subsonic and supersonic rounds
Gobble4me757
Well-Known Member
Really interesting...have a buddy saving to buy one. I think it could be awesome with the sub rounds and being able to kill deer at 150 yards as quiet as a suppressed .300 bo
Not wanting to hijack a thread.. but he might think about 9.3 X 47 mm.
Sorry my goof up that should be 9.3x39 mm. Also called 9x39 mm.
My opinion/experience only...
The biggest difference maker for this cartridge is the twist rate. Just looking at the velocity and mass aren't going to impress you that much, compared to what's been done in the past for slow moving projectiles with decent mass.
The twist rate is what's crazy about this one. I don't know of anything that's spinning as fast as 8.6 BLK when it leaves the barrel.
I shot one from a very compact bolt gun a few months ago. It sounded like a 22lr leaving the barrel, but a freight train when it hit the target. It's worth keeping an eye on.
The biggest difference maker for this cartridge is the twist rate. Just looking at the velocity and mass aren't going to impress you that much, compared to what's been done in the past for slow moving projectiles with decent mass.
The twist rate is what's crazy about this one. I don't know of anything that's spinning as fast as 8.6 BLK when it leaves the barrel.
I shot one from a very compact bolt gun a few months ago. It sounded like a 22lr leaving the barrel, but a freight train when it hit the target. It's worth keeping an eye on.
Did you get to play with a suppressed fix?
