5.56 ain't gonna do it no more, it is decided ramp it up to 6.8. But what about 308/7.62x51? They are very similar in many ways, both can pierce armor, and I think the tradeoffs are like this:
6.8: Lighter and easier to carry, flatter at a distance, used in new Sig rifles, has a significantly lower recoil compared to 308.
308/7.62x51: Bigger boolit with more kinetic energy, rated much further to 1,000 yards, not expensive, used all over the world for many purposes.
all of these rounds are stopped by IV plates so who cares?
The forces that use these will be loading armor piercing rounds. They are designed with body armor in mind. Green tip 5.56 can pierce level IV armor some of the time, but 6.8 is a stronger round. And 7.62x51NATO is widely used along with 308 with AP, API, SLAP, etc.
>Green tip 5.56 can pierce level IV armor some of the time
no it cant
You are correct, even level 3 ar500 plates protect against 556 green tip
>They are designed with body armor in mind.
Not once was body armor brought up in the NGSW program specs.
>Army Chief of Staff Gen. Mark Milley, a strong proponent of the round and new rifle, believes the weapon system will prove to exceed any military rifle in existence, and penetrate any body armor in use now and in the next 25 years.
>blah blah blah bureaucrats says x and mouth-breathing morons believe it and spam it
Yeah, that's not what it says in the specs. If you read the congressional records, btw, you'll notice the armor they mention is cited as Level 2 and Level 3. No mention of what standards that falls under, but...
308 is the heavier round, both have some serious kick, but you can reach out further than 6.8 with a 308. If you can still shoot accurately, with or without armor, at a longer range, with a cheaper gun, then I'd prefer the less expensive 308/7.62x51.
6.8x51 shits all over 7.62x51. no contest.
I doubt 0.8mm matters that much either way. Sounds like a israeli scam
6.8 is the first western military bullet with proper VLD bullet (should and could happen 70 years, see Voss bullets, but fricking boomers dragging progress back)
>6.8 is the first western military bullet with proper VLD bullet
Balle D bruh
brainlet.
It’s not just 0.8mm. The bullet is lighter first of all, so will go faster. It has superior form factor for the same bullet length, so a higher BC for the same sectional density. But the magic is in the case. It runs at 80kpsi vs 60kpsi or so for the 7.62. So more energy from the same volume of propellant. There qualities all aggregate to produce a round far superior to 7.62x51.
>The bullet is lighter first of all
The 6.8mm projectile is the same weight as the 7.62x51 projectile the US Army uses.
It is longer/thinner and thus far more aerodynamic, when combined with the much higher chamber pressure you get a faster projectile that retains its velocity longer.
I meant lighter for the same SD, should have clarified. Just a comparison between 6.8 and 7.62mm projectiles, all else being equal.
Based high IQ post.
israeli hands typed these posts
Peak GPMG/DMR cartridge, should replace 7.62 in all roles. But it’s much too overpowered, large, heavy, and high recoiling to serve as a 5.56 replacement. A better option is something like a hybrid case 5.56 with a shorter case and VLD bullet.
Whatever, if Sig/lake city/whoever is able to mass produce hybrid cases for cheap, I’m sure eventually we will have hybrid cases cartridges for every niche, including what I just described.
Seems moronic to make an intermediate round between 5.56 and 7.62, can't the 6.8s features be incorporated in to those rounds somehow?
6.8x51 is not intermediate between 5.56 and 7.62 in any way other than caliber. And yes ofcourse they can. But the army wanted 6.8mm. It’s probably what they decided on as being optimal for armor penetration. And If you’re adopting a new round, you can pretty much do whatever you want. No need to retain the same caliber or whatever.
Why is 5.56 not doing it anymore?
Are you expecting to meet opposition with body armor?
Is your expected distance of engagement going farther?
Your carbine isn't fun anymore so you're building a SPR?
Russian and Chinese now issue level 6 body armor as standard kit, that makes 5.56 pea shooters literally useless...
>russians
>issue body armor
As
points out, Russian body armor largely fell off the back of a truck, and is being sold internationally by somebody's sketchy cousin. Even the stuff that makes it to the front line often isn't worn, because it is difficult to maneuver with any speed with a whole lot if extra weight strapped to your body.
lots of americans have body armor now days
I’ve always liked it no matter what the cool kids say. Just having some extra reach in a 5.56 package.
.300blacked 4 lyfe
Both M80A1 and the new 6.8 round use a 135gr projectile. The 6.8 round aso has substantially more recoil than 7.62x51.
It's the same weight bullet in the same length cartridge going a lot faster, it is by no means lighter or easier to carry, and has a bit more kick than 7.62.
*dabs on siggers*
>6.5lbs
>claims to stop all kinds of AP threats
>not third party tested and accredited
I bet you think the stripper actually likes you.
Apologize. https://www.youtube.com/watch?v=EIHE2RjfD7E&ab_channel=Buffman-R.A.N.G.E.
.308 sucks, as do all other .30 caliber cartridges. Only reason we still use it is because of the Krag which was a piece of shit btw.
>b-but what about .300 Shid and Fard????
It sucks. Go bigger or go smaller.