gatnerd

Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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NGSW Phase 2 Consolidation and info   Small Arms <20mm

Started 30/8/19 by gatnerd; 547484 views.
poliorcetes

From: poliorcetes

11/9/19

Indeed ammo backpacks can adquire popularity with the new cartridge

 

However, adding the new fire control systems I would assume that ammunition spending would be decreased

stancrist

From: stancrist

11/9/19

I doubt that it's a backpack.  As I recall, the Ironman backpack system developed by the US Army held 500 rounds of 7.62 ammo.

In reply toRe: msg 78
gatnerd

From: gatnerd

12/9/19

More info from TFB:

How this is 20% lighter remains to be seen...

 The MG-6.8 can be chambered in both SIG’s 6.8x51mm Hybrid and 7.62x51mm, requiring only a barrel change and no change to the bolt. The MG-6.8 takes the MG-338’s technology and compresses it into a package the size of an M249.

It weighs around 12lbs and some weight saving measures have been taken to achieve this with the carrying handle removed and the MG-6.8 does not have the ability to change its feed direction. Additionally, the quick-change barrel feature is not present but is still able to change barrels if needed. 

It uses the same shot-stroke gas piston system and also has a similar recoil mitigation system and internal buffer [to the sig .338] which reportedly brings down its felt recoil to that of an M4 Carbine – 2ft.lbs.

In reply toRe: msg 79
gatnerd

From: gatnerd

12/9/19

Textrons submission now public:

https://www.thefirearmblog.com/blog/2019/09/12/first-photo-of-textrons-ngsw-prototypes/

LMG looks great.

Carbine looks absolutely awful though, the forward 'tumor' has grown even larger since the 6.5 CT carbine:

This likely would have been better as a bullpup, so that the 'tumor' could be tucked into the stock/above the pistol grip, allowing a slimmer, easier handgaurd.

I imagine this one is tremendously front heavy in terms of balance.

EmericD

From: EmericD

12/9/19

gatnerd said...

How this is 20% lighter remains to be seen...

I'm seeing "brass case" and "metal base", so maybe the base is not steel?.

The weight reduction of ~20% is not an impossible task if the base represent 60% of typical a brass case total weight, and replacing this brass base with lightweight alloy base.

stancrist

From: stancrist

12/9/19

gatnerd said...

Textrons submission now public:  LMG looks great.

Indeed.  And it's interesting to see that, like SIG Sauer, Textron opted to go with a belt-fed machine gun, instead of a mag-fed automatic rifle.

 

gatnerd said...

Carbine looks absolutely awful though, the forward 'tumor' has grown even larger since the 6.5 CT carbine:

This likely would have been better as a bullpup, so that the 'tumor' could be tucked into the stock/above the pistol grip, allowing a slimmer, easier handgaurd.

I think it would be at least as bad as a bullpup.  It would be extremely ass heavy, and have a length of pull better suited to apes than humans.

poliorcetes

From: poliorcetes

12/9/19

Look at the lenght of CT cartridges. Compare them with the pens to the left

 
Farmplinker

From: Farmplinker

12/9/19

They need to give us all here a case or two to play with.

gatnerd

From: gatnerd

12/9/19

"Look at the lenght of CT cartridges. Compare them with the pens to the left."

Good catch! I didn't even notice them till you mentioned them.

I cropped the image and edited it (poorly) to help make them stand out more:

Also, on the second pass I spotted the 6.8 mag. Looks fairly thick, but is sadly not a quadstack as hinted at in some of Textrons patents.

 
 
gatnerd

From: gatnerd

12/9/19

"I'm seeing "brass case" and "metal base", so maybe the base is not steel?.

The weight reduction of ~20% is not an impossible task if the base represent 60% of typical a brass case total weight, and replacing this brass base with lightweight alloy base."

Several different articles over the last few months have mentioned a steel base / brass body. It's possible they are all wrong in their reporting; that said the bases sure look shiny like machined steel. 

 

Shell Shock achievers a 50% case weight / ~20% cartridge weight savings using an aluminum base / thin wall steel body, so if they are using aluminum instead of steel that would be good.

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