>>64209029
because they're fucking poor dude.

>>64209030
They have enough money to adopt a new rifle, that ain't the issue

>>64209040
It absolutely is an issue, these countries have budgets.

>>64209029
Because army procurement is always based on current MIC trends. Other countries don't have the american MIC telling them to use another caliber so they can sell new guns.

>>64209094
You reckon it's all on that and that there's no real usage of a different caliber?

Because Sig Saar isn't paying their top brass.

>>64209156
For what buddy? Can you give me an example of a country? Have you thought this through at all?

>>64209156
>and that there's no real usage of a different caliber?
Like what? What for? Why was 5.56 introduced in the first place?

>>64209029
because 5.56 does the job and simple rounds like M855A1 works well enough

if anything trying to replace 7.62x51 is a much better idea

>>64209174
Butthurt textron pissbabby detected

>>64209029
because there are already factories set up to mass produce millions of 5.56 and 7.62 nato
not to mention all of the existing ammo sitting in storage
and all the magazines already standardized and mag pouches, suppressors etc.
that are meant to work with those cartridges
whats the point of switiching if what you have is already good enough?

>>64209220
>if anything trying to replace 7.62x51 is a much better idea
i think its actually retarded to switch something else for 7.62 nato
if anything it makes sense to adopt the .338 as a medium mg/long range sniper round
sigs 6.8mm does literally nothing that 7.62 couldnt while 338 gives you much more power and range but guns are way lighter than 50 bmg M2 or barretts

>>64209227
No, the whole ngsw program is retarded

Unpopular opinion:
Why not better powder, material science(Better casing, Bullet design, that magic steel base for the 6.8 Fury)?

>>64209174
Kys gun grabber

>>64209029
Somebody has to pay for the ammunition, or you could get it given to you for free by the US as FMF with some minor strings attached (but not to you as military) come on guy

>>64209389
>sigs 6.8mm does literally nothing that 7.62 couldnt while 338 gives you much more power and range but guns are way lighter than 50 bmg M2 or barretts
completely untrue and retarded

>>64210305
ok goyim
go buy 277 Furry then buy a conversion kit to 308 in 5 years when this cartidge becomes forgotten

>>64209030
Nailed it. There's already an industrial base producing 5.56, it's widely used and available.

Why make an expensive change for minimal gain?

>>64209029
6.8SPC is an inferior cartridge to 5.56, and it's adoption would've got US soldiers killed. I'm glad that the fudds were told their 30rem case is shit, and I'm glad they're still assmad about it.
224valkyrie and 400legend are also shit. .422 is a dead-end case head diameter and inferior to .378 in every respect, just a complete waste of people's efforts and attention.

>>64209415
If that's an unpopular opinion then it's an indictment of the people you're talking to. Obviously brass is inappropriate as a next-gen small arms cartridge case. It's expensive, heavy, weak, and thermally inefficient when compared to stainless steel. It's only advantages is it can be reloaded easily, which the military doesn't care about.

>>64209389
>does nothing .308 can't
These 6.xx class cartridges exist because someone said ballistic efficiency matters and we can do better.

Me personally, I don't give a shit about bullet drop. That's just a matter of practice and familiarity no matter the cartrisge.
But 155gr .277 has a (g1) BC of something like .64 and is supersonic out to 1000+ meters, has half the wind drift at 400-500, etc. Same arguments for 6.8/.277 are used for 6.5 creed.

>>64209029
The US does a lot of "We'll change this because we can" rather than actually needing to. Other countries either don't have the money or have more common sense. An infantry rifle isn't a high priority weapon system and spending a fortune to upset your entire procurement chain just so you perform better in rare long-range small arms battles isn't worth it. Spend that money on something more important.

Hobbies that involve buying shit tend to get a lot of autistic focus on minmaxing your stats but it doesn't work that way in the real world.

>>64210806
>422 is a dead-end case head diameter and inferior to .378 in every respect
Elaborate on that.

>>64209029
Lots of countries have the hope that if they are ever invaded, NATO will supply them with ammo; therefore, they will only adopt cartridges that are NATO standard.

Institutional inertia is a thing, it is hard to justify a new cartridge when you are poor, have warehouses of 5.56, 7.62x51 or 7.62x39 and expect Uncle Sam to fight your wars for you.

>>64209389
>6.8mm does literally nothing that 7.62 couldnt

6.8x51 isn't a ballistic potato for starters

>>64211200
7.62's ballistics are good enough for the ranges it's used at. A cartridge with better external ballistics would be better since it could enable the same downrange performance as 7.62 with less weight and recoil. 6.8 is in a weird spot because it has practically the same weight and recoil as 7.62, and it's shackled to a rifle that's not accurate enough to engage targets even at 7.62's maximum effective range.

>>64210866
NTA. It’s a dead end because the retarded industry unofficially standardized on the 7.62x39 case head when 30rd 6.8 pmags, bolts, and semi-standard receivers already existed. The 6.8 is a shit cartridge but the .422 case head is more sensible for use in an AR compared to the .447.

Why are anons talking about 6.8 SPC at all?

>>64211289
Good question. Maybe OP posted a random 5.56 alternative or is confusing 6.8x51 with 6.8SPC.

>>64210846
ok but this 6.8 is not meant for dmr or sniper use
mcx spear does not have enough accuracy potential to stretch the limits of this cartridge and bear in mind you are not in afghanistan any more
the next big war will probably be in the forest of europe or on pacific islands
or maybe in venezulan jungle .
you wont even get to take shots longer than couple hundred yards at best

>>64209220
This. 5.56 is a fine cartridge for infantry use, and cutting your combat load in fucking half, as well as having to lug around a fatass brown shitbox made by the most horrifically fucking mid-tier slop manufacturer, that shit makes zero sense.

>>64211656
I forgot to add, it also doesn't hurt my shoulder firing, and I am trans btw.

>>64209029
Most of the countries in the world are a US front, most haven't fought since WW2, some had their final conflicts around Vietnam, and since then have only participated in wars that US started. Logistics are thus easier if US puppets use US ammunition, especially if they have to buy it from US.

All it will take for them to switch to .277 Fury is for Trump to say so.

>>64209220
>simple rounds like M855A1 works well enough
Services even within United States have refused to adopt M855A1, and most European nations do not use it because it breaks AR-15s.

>>64211689
We know what it does to the guns.
It's still a fucking awesome round.

>>64210866
They mechanically weaken the components in a small-frame AR (which they're all designed to fit in).

>>64211279
I'm TA and I agree, the Grendel/ARC are even worse, I wish they were just AK and bolt gun cartridges.

If I were king of the AR industry (like Hornady seems to be these days) all the "enhanced" cartridges would be based on the .378 rim, and all enhanced carriers would have cam rotations of 22.5 degrees. The cam rotation is actually something Stoner always wanted. Those two things alone would clear up a load of bullshit which is wasting people's money.

6mm Max is unfortunately the only "enhanced" AR cartridge which is designed well (because of it's parent). Hopefully it's not dead but it seems to be.
The reason it doesn't suck is because .390 is about as far as you can go on the case body before the design of magazines which fit in a standard small-frame AR magwell either gets inefficient or compromised by material/form restrictions.

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>>64211670
>Welcome to the Salty Sigger, how Indian are you?
Cope, seethe, Dial 8. More rounds are better, and we already know that 5.56 works very well.
>But battle rifles are heccin cool!
Yeah, they are. That’s why I have multiple select-fire examples. But my days in Trashcanistan didn’t teach me “oh man, I want my rifle to weigh more for no benefit and be made like shit”, it was “I want my kit to be lighter” and “This shithole and everyone in it should be used for open-air nuclear testing”.

>>64209029
Because 5.56 is literally perfect for individual weapons. Every military that matters switched to 5.56 40 years ago, any military still using 7.62x51 standard issue rifles literally doesn't matter and will never fight a war

>>64211752
There's more than enough meat in an AR-15 to handle a .422 bolt face. The problem is with retards trying to make x39-derived cartridges work.

Also, 6mm Max sucks.

>>64211806
Why do gay-ar trannies always get so mad when someone is pointing out they're little sissy fagbois with noodle arms, limps wrists and a lisp?

>>64209029
Because all their militaries are just for show and they perpetually copy what america did decades ago

>>64211689
Neither of these claims are true, why would you so boldly lie?

>>64211752
>22.5 degree rotation

Hang on, don’t all AR bolts rotate 22.5 degrees? 8 lugs (technically 7 but whatever), 8 slots = 1/16th of a full rotation to lock/unlock = 22.5 degrees.

>>64211843
>AR bolt stronk

This is true. The AR15 sized bolt can actually handle the bolt thrust of a 308 (see: POF small frame 308 rifles). Still, a small case head is not without merit. Smaller and lighter cartridges, greater mag capacity, lighter reciprocating parts.

>6mm max sucks
Needs a shorter case and finer bullets. That’s all.

CAPTCHA: TW0YN
Just 2 young niggaz

>>64212163
Both of these claims are true, why would you so boldly lie?

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>>64211884
>All this projection and mad
I accept your concession to my superiority.

>>64212199
>Smaller and lighter cartridges, greater mag capacity, lighter reciprocating parts.
A substantial portion of the weight will be in the bullet regardless, and we're talking about a small change in diameter anyhow. Going up to the x39, x51, or magnum bolt faces will substantially increase the weight since you'll also need a beefier bolt and receiver. The weight of the reciprocating assembly has more to do with the configuration of the gas system than the cartridge being fired, it's an easy band aid fix but if we're talking about military adoption of a cartridge and weapon system then there should plenty of engineering time involved so it shouldn't be a problem to make sure that the gas system is properly tuned for the intended loads.

>Needs a shorter case and finer bullets. That’s all.
At which point you lose all of the advantages 6 Max claims and you just have a slightly smaller and lighter .300 Blackout. Which, admittedly, would be a better cartridge than 6 Max, but I don't see a particular niche for it.

>>64209029
Just because we're doing it doesn't mean it's a good idea

>>64212419
>he didn't deny it
lmoa