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Old November 01, 2018, 23:08   #1
Tak
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The verdict is in: U.S. picks the 6.8 as the new round

per fox news story today.

highlights from the video clip was something like 'the new bullet is 1 mm bigger which gives it greater velocity at subsonic speeds'
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Old November 01, 2018, 23:31   #2
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Quote:
Originally Posted by Tak View Post
per fox news story today.

highlights from the video clip was something like 'the new bullet is 1 mm bigger which gives it greater velocity at subsonic speeds'

Reporters are apparently all the same no matter who they work for...
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Old November 02, 2018, 10:30   #3
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Well,

The round is a polymer cased telescopic rd, that happens to be 6.8mm you wont see this rd for sale for about a decade if ever. No more brass cases and entirely new rifles.

Im sure that 6.8mm brass rds will be advertised "Same caliber as the Army uses", despite being nothing alike.

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Old November 02, 2018, 10:39   #4
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IO still can't get my head around the cased telescoped idea.

In a conventional weapon the gas propels the projectile all the way to the muzzle and perhaps a tad beyond.

In a cased round the propellant stops at the end of the case, meaning the friction on the bullet already starts slowing it down, before it goes 2 inches. In order to get the same velocity, the initial acceleration would seem to be far beyond what the evolution of the gas from any normal propellant could generate. Plus the inertial acceleration on the projectile itself would be far beyond normal as well.

What am I missing here that makes this work, let alone viable??????
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Old November 02, 2018, 11:05   #5
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Well,

If my memory serves me pressures were about 5 times normal service rifles but I could be mistaken.

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Old November 02, 2018, 11:51   #6
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A resurrection of the HK G11 ?






......................................
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Old November 02, 2018, 12:26   #7
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A resurrection of the HK G11
......................................
No,

G11 was designed for high cyclic rate. New Army rd is designed to penetrate ceramic boron carbide body armor. New fire control model allowing 1st rd hits is being developed in tandem.

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Old November 03, 2018, 02:08   #8
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No,

G11 was designed for high cyclic rate. New Army rd is designed to penetrate ceramic boron carbide body armor. New fire control model allowing 1st rd hits is being developed in tandem.

Thorack
The G11 cyclic rate sucked so if this is true, (first time one heard such a claim) then HK failed miserably. The entire point of the G11 was the careless round.
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Old November 03, 2018, 10:51   #9
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Quote:
Originally Posted by M829A3 View Post
IO still can't get my head around the cased telescoped idea.

In a conventional weapon the gas propels the projectile all the way to the muzzle and perhaps a tad beyond.

In a cased round the propellant stops at the end of the case, meaning the friction on the bullet already starts slowing it down, before it goes 2 inches. In order to get the same velocity, the initial acceleration would seem to be far beyond what the evolution of the gas from any normal propellant could generate. Plus the inertial acceleration on the projectile itself would be far beyond normal as well.

What am I missing here that makes this work, let alone viable??????
I think yer missing the whole concept, mate. The propellant is different, as is the fact that the projectile is partially encased by said propellant, but it still performs the same function as conventionally-cased ammunition. The projectile doesn't know the difference.

Perhaps you are thinking about piston cartridges, where the propellant gas, once ignited, pushes a piston, which in turn imparts force on the projectile. The propellant gases are therefore totally sealed within the case. That is very niche ammo for special purposes- namely very low report with or without a suppressor.
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Old November 03, 2018, 13:06   #10
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The G11 cyclic rate sucked so if this is true, (first time one heard such a claim) then HK failed miserably. The entire point of the G11 was the careless round.
2100rd per minute using the 3rd burst feature. Small caliber caseless ammo was used to eliminate the extraction phase thus speeding up the cyclic rate and the small size was to allow more ammo to be carried.

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Old November 03, 2018, 16:27   #11
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2100rd per minute using the 3rd burst feature. Small caliber caseless ammo was used to eliminate the extraction phase thus speeding up the cyclic rate and the small size was to allow more ammo to be carried.

Thorack
I stand corrected on the burst feature, had not considered that.
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Old November 03, 2018, 16:45   #12
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Yay. They spend more money. Then ship the left overs to the Middle East
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Old November 04, 2018, 09:02   #13
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So the new round is 6.8 Space Telescope?

Does it work?
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Old November 04, 2018, 09:29   #14
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Yes,

Space telescope. Great for shooting the moon.

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Old November 04, 2018, 19:00   #15
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No,

New Army rd is designed to penetrate ceramic boron carbide body armor.

Thorack
The Army General staff is still generally retarded. How many goat rapers, merry marxists and chicoms will be running around with ceramic boron carbide body armor in numbers that will DEMAND changing the ENTIRE current armory of rifles, carbines, light machine guns and ammo supplies for the next several decades? One thing about the military industrial command is that they always love to waste taxpayers money, no matter what the cost.

These Army stupidos must be the grand-chirrun of General Rene Studler?


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Last edited by Jarhead504; November 09, 2018 at 07:52.
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Old November 04, 2018, 19:45   #16
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per fox news story today.

highlights from the video clip was something like 'the new bullet is 1 mm bigger which gives it greater velocity at subsonic speeds'

Yeah, that is kinda funny, considering that subsonic velocity is not exactly a constant depending on where on earth (and above sea level) (and temperature) (And humidity) that you are standing at any given time.

I must be the first to say it.

Fake news.
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Old November 04, 2018, 20:54   #17
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Originally Posted by Jarhead504 View Post
The Army General staff is still generally retarded. How many goat rapers, merry marxists and chicoms will be running around with ceramic boron carbide body armor in numbers that will DEMAND changing the ENTIRE current armory of rifles, carbines, light machine guns and ammo supplies for the next several decades? One thing about the military industrial command is that they always love to waster taxpayers money, no matter what the cost.

These Army stupidos must be the grand-chirrun of General Rene Studler?


Jarhead
Well,

The future threat is (near peer) both Russia and China which have body armor and the Chinese are rapidly beginning to field a type of boron carbide plate. Only Infantry and Scouts will have this rifle once its starts to be fielded. Army Infantry school with Marine support is pushing this new capability and plan to make it a joint effort.

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Old November 04, 2018, 21:13   #18
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I guess if we're ever invaded by the reds, may not be a bad idea to practice nut shots.
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Old November 04, 2018, 23:32   #19
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2100rd per minute using the 3rd burst feature. Small caliber caseless ammo was used to eliminate the extraction phase thus speeding up the cyclic rate and the small size was to allow more ammo to be carried.

Thorack
If pressures are roughly 5 time what they are now,and cyclic rates jump ,won't this simply mean a very heavy barrel with a very short life?
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Old November 05, 2018, 08:55   #20
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Well,

Cyclic rates wont be abnormally high on the new rd. Probably very similar to the M-4/M-16. The fire control being developed in tandem will allow a high probability of first rd hit. One shot one kill of an armored Soldier.

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Old November 05, 2018, 10:27   #21
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Whatever weight savings they achieve by altering the guns, they will put back onto the grunt by making him carry all manner of gee-whiz techno-shit that will bolster the treasuries of the government-contract arms industry.

The ammo and the guns might be lighter. You still gott get into position to fire, and you still have to hit your target.

This notion of volume-of-fire from individually-carried, single-projectile weapons is the actual problem.

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Old November 05, 2018, 11:22   #22
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WEG,

The new fire control systems being developed will be used on a prototype magazine fed carbine with a 25 rd magazine. The endstate is precision rifle fire from every Soldier at a lower weight with a rd that can penetrate future threat body armor.

New prototypes should be out next year from 4 manufactures.

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Old November 08, 2018, 12:26   #23
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So the new round is 6.8 Space Telescope?

Does it work?

Not as advertised. NASA will have to send someone up in a few years to fix it.

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Old November 08, 2018, 23:00   #24
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Seems like the point is to ultimately phase out brass cased ammo so civilians won't be able to have guns anymore?

How to you handload this stuff at home, with a playdoh press?
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Old November 09, 2018, 13:48   #25
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Seems like the point is to ultimately phase out brass cased ammo so civilians won't be able to have guns anymore?

How to you handload this stuff at home, with a playdoh press?
I'm thinking that they are seeking a cheaper solution to get away from using copper, which seems to be more dependent on foreign imports which are typically owned by and in goat raper countries.

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Old November 09, 2018, 19:51   #26
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Well,

The goal was a 40% weight loss in ammo. Although this stuff wont be reloadable as the inner polymer in the rd turns molten and deforms after firing. Exterior is cool enough to hold though.

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Old November 10, 2018, 09:12   #27
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I find it odd that the US would choose a non-NATO round. Are they expecting to force it down the throats of the other members like they did 7.62x51?
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Old November 10, 2018, 15:16   #28
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Well,

The Army has pretty much broken with NATO standard. At the NATO ammo standardization meeting last year both new 9mm rds the Army is buying for the P320/M17 were on track to be declined for standardization. The rest of NATO doesnt want the new rds. The new M80A1 and new M855A1 rd haven't been adopted either.

I think we are going to drag NATO to ammo after ours is proven and we decide to share manufacturing techniques.

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