6.8x45mm
Same case dimensions meaning both a easy switch in Production methods and the 5.56 conversion only requires a barrel and mag swap
Can be used in light machine guns originally chambered for 5.56 such as the m249 saw
The perfect intermediate between 5.56 and 7.62x51
Better ballistics then 5.45 5.56 and 7.62x39
more powerful then 5.56 meaning it can punch through body armor much more quickly and effectively and only has a slight increase in recoil
Same round count in a magazine as a 5.56 mag of 30 rounds
It’s everything the us is looking for and yet they went to 6.8x51 like Braindead retards
Could you lay it out for me why 6.8 SPC is better than .224 Valkyrie? Valkyrie looks like a direct upgrade too. I understand the barrel life on the SPC is going to be significantly better, but other than that what does it offer?
6.8x45mm is teh trash. FACT
https://www.thefirearmblog.com/blog/2015/04/04/not-so-special-a-critical-view-of-the-6-8mm-spc/
6.8x45mm not 6.8 spc
Same case dimensions as 5.55 and from what I’ve heard overall better performance
>It’s everything the us is looking for and yet they went to 6.8x51 like Braindead retards
>they
Great, another obsessed euro losing sleep over what equipment another country chooses
Kinda have to, because whatever retarded shit piked by the ordnance morons of the Burger Army, magically becomes NATO standart imposed on everyone.
Because NATO is 99% US power. The ones who aren't braindead over there know who controls the reins in the group. Just stop sniveling, shut up, and we'll keep taking care of you Eurocucks like we have for nearly the past century.
Why should I believe someone too retarded to know the difference between "then" and "than?"
> perfect intermediate
You see? that's the problem. 7.62-5.56 intermediates suffered the problem of "valley of mediocrity" as they aren't particularly good at anything besides a boosted 5.56. Even worse, you're proposing something like a arisaka but slower and even less effective.
The meme .277 fury is just a 7.62 neck down to 7 mm, that's why mags are compatible. Same energy of the 7.62 but far better ballistic coefficient and sectional density to improve penetration.
The hybrid case version is optional but an option useful if needed.
It seems like the hybrid case meme made people think that .277 fury was something really new case-wise.
>6.8 SPC
El-EM-AY-OH
That round was already written off and dumb bullshit fucking years ago. The last time that it was a thing, Chris Costa was making Magpul viedoes.
Pic goes hard
223 was retarded until we made 5.56
Whos to say we can’t do it here
>implying that 5.56 isn't literally just .223 adopted into a metric reference drawing
>implying SS109 is better than M193
>implying you know what the fuck you're talking about
6.8 SPC is 6.8x43mm, anon.
OP is suggesting something different.
Please keep your disdain coherent.
>OP is suggesting something different.
Like even shitter bullets with shorter ogive length? Yeah that would show them!
Primary reason why 5.56x45 and it's derivatives suck is because of short ogive bullets with poor form factor. Increasing caliber does nothing to solve this problem.
>Like even shitter bullets with shorter ogive length?
Yes. He is recommending a compromised solution that moves the cartridge more in the direction of being a short-range blaster, without going full .350 Legend.
Is that a good idea? Probably not! Unless we're also to assume 6.8x51 operating pressures too. That''d be hot meme, literally.
>looks at pic
>if jojo had operators
>all this to cope over the fact that China's 5.8 is the best intermediate round
If you believe what the chinks say about it the 5.8 is pretty fucking good
5.5x30mm Pistol & Submachinegun round
6x45 automatic rifle & light machinegun
6.5x50 marksman rifle & machinegun
i thought op was retarded but this fucker right here just upped the ante
But why would you want to combine two cartridges intended for two different jobs into one mediocre one? Especially when the logistics cope is falsified by he existence of betlfeds and the endless number of cartridges used in WW2?
CQB and medium-long range fire are different roles. Optimize like for like. Say, a 5mm to replace 556 and a 7-8mm for the 800-900 meter range.
>it’s mediocre
The civilian variant is
We haven’t even tested what it would be like with a hotter load and a steel core
>hotter load
Case capacity is too small. Almost the same capacity as the chink 5.8
The .277/7.62 was a no-brainer if you completely phase out the 7.62. The hybrid version is polemic tho.
So just put a m855a1 steel core style bullet on it and you’ve got something significantly better then the 5.56 we’re using
Guns can't take it. A normal 6.8 spc at 55k psi already has more bolt thrust than M855A1 with a 62k psi chamber pressure. You'd need a significantly stronger action for a round with shitass performance. The 6.8 SPC is fundamentally a gimped round and there's a reason nobody sells it anymore.
As I already said it’s 6.8x45 not 6.8 spc , it dose the same thing but the cartridge is easier to make and more cost efficient of a switch
Your spacing makes me immediately disregard any valid points you may present.
4.73×33mm caseless updated with a M855A1 style fragmenting bullet for carbines
6.5 cased telescoped polymer with plastic links for beltfeds
6mmx18 2-part straight steel case at 80pksi for pistols
It is an improvement, but is it worth the swap? 6.5 Grendel is still GOAT for the 15 platform, imo
>shears bolt
heh, nothing personnel kid
Fudd hands typed this post. Stop eyeballing your primers as your source of pressure signs, grandpa. Boomer reloaders doing brass inspection were already way the fuck over the 52k max for grendel before the brass gave any signs.
It’s cost effective due to it only requiring a barrel and mag swap , it can be used in 5.56 mg’s that have a barrel swap
It has the same case dimensions meaning production of it won’t be to difficult to set up, we won’t need to get rid of all our m4’s for a new rifle so if we do eventually adopt something new to replace the ar15 design we can take them out of storage if needed
The ballistics outpace 5.56 7.62 and 5.45 probably china’s round also
Generally it’s a cost effective upgrade that will boost our performance enough to be able to punch through most armor our enemies will be using and will be much better at dealing with American body armor , so instead of taking 15 shots center mass to pass through it might take 5-7
6.5 Grendel
Not as many benefits as the army would be willing to take in exchange for the price
>Better ballistics then 5.45 5.56 and 7.62x39
Give me details.
And is the cartridge designed with modern long bullets in mind for good BC?
https://www.thefirearmblog.com/blog/2015/06/09/kramer-defense-introduces-new-6-8x45mm-ucc-round/
https://www.ammoland.com/2015/06/6-8x45mm-ucc-urban-combat-cartridge/#axzz8HwtPAJel
They are launching bullets with same BC as Mk262 at 2500 fps when Mk262 sends them at 2800 fps. Yay!
>fat, short and slow
>good
People who doesn't know what ballistic coefficient and form factor are shouldn't be allowed to design cartridges.
>more powerful then 5.56 meaning it can punch through body armor much more quickly
Body armor works the opposite of how you think it does. Smaller faster bullets penetrate it more easily.
>It’s everything the us is looking for and yet they went to 6.8x51 like Braindead retards
No, it's nowhere near as powerful. It's a dogshit round that is all but dead because it is worthless.
If soldiers weren't such weak pussies, they could instead make 7mm PRC the standard infantry round.
Better ballistics at the muzzle*, and only if by ballistics, you mean energy,
Yes a wider bore will be more efficient and produce more energy from a shorter barrel, but at the expense of form factor, velocity, trajectory, cartridge weight, recoil, and energy at range.
There are so many shortcomings to increasing caliber without increasing everything else isometrically.
It also is not really intermediate between 5.56 and 7.62. Energy wise, it’s maybe 30% of the way to halfway. Still firmly in intermediate weight class, just worse than all the other alternatives.
I’d suggest revisiting the 5.56 FABRL. Lemgthen the case to 45mm, so the COAL is right around 2.5”, double the bullet weight to 75gr, and double the pressure to 80kpsi. Such a loading Retains the same velocity as m193 except with a 75gr bullet with the BC of a 100+gr .224 bullet. Total cartridge mass increases by 13gr over m855.
As for SBR cartridges, such a cartridge is still plenty effective even at gimped velocity from a short barrel, albeit probably inefficient af. No need to balance relative capacity with SBR use. You can just have both.
There is also a wildcat cartridge called .277 Wolverine, which, unlike 6.8 SPC, uses the same case as .223.
That’s actually not to bad of an idea , it could theoretically it could do everything the 6.8x45mm dose but better , I’ll look into it for sure
I don't know why but last night I had a dream that I was loading a revolver and the bullets were like this. That is all