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NGSW Phase 2 Consolidation and info   Small Arms <20mm

Started 30/8/19 by gatnerd; 453820 views.
smg762

From: smg762

23-Jan

I disagree. The 4.9 had a higher BC than 556 and more range

smg762

From: smg762

23-Jan

Mags were 21 inch....as long as the barrel

EmericD

From: EmericD

23-Jan

smg762 said:

I disagree. The 4.9 had a higher BC than 556 and more range

A C7 of 0.161 and a MV of 920 m/s for the G11 ammo, versus a C7 of 0.168 and 930 m/s for the SS-109 (C7 of 0.158 for the M855 according to B. Litz).

That's not really "a higher BC and more range" for the G11 ammo.

smg762

From: smg762

23-Jan

It's a 56 grain 5mm versus a 62gr. Clearly the 5mm will have more BC but you are correct in that it has less power than a full. Length M16

EmericD

From: EmericD

23-Jan

smg762 said:

It's a 56 grain 5mm versus a 62gr. Clearly the 5mm will have more BC

The bullet weight was 3.4 g (52.5 gr) and 4.75 mm in diameter (0.187"), so the sectional density was 0.214 lbs/in². That's higher than the 0.177 lbs/in² of the SS-109, but the G11 bullet shape was not really impressive and the final C7 was only 0.161.

Even if that's better than the 5.56 mm M193 (0.124 C7), it was lower than the SS-109 (0.168 C7) and also the British XL1E1 (0.185 C7).

stancrist

From: stancrist

23-Jan

JPeelen said:

The criticism usually imply that we would still have the same design as in 1992. If the G11 had been adopted in 1992, the current rifle would be very different from it, like a Mauser 98 is from a Mauser-Norris of 1869.

Both the 1869 Mauser-Norris and the 1898 Mauser are manually-operated, bolt-actions.  The only fundamental difference between them is that the former is a single-shot rifle, whereas the latter is a 5-shot repeater.

I see no reason to think that the current version of the G11 would be any more different from the 1992 version, than the latest version of the M4 carbine is from the M4 of 1992.

JPeelen said:

Regarding Afghanistan, it is a good thing we did not have the 4.9 mm cartridge of the G11. It was optimized for engagements within at most 300/400 m as was expected from cold war German Panzergrenadier tactics. Long range individual rifle engagements were not the plan in 1992. That is the ballistic consideration. On the other hand, when the rules of engagement make sure you can never win (mortar ROE for example), the rifle is of little consequence.

What mortar ROE "make sure you can never win"?

  • Edited 23 January 2022 17:02  by  stancrist
JPeelen

From: JPeelen

23-Jan

I used the Mauser-Norris versus Mauser 98 as an example of a large number of changes that go into any design over years of accumulating experience in making and using it. The G11 being a totally new, more complex design would in my view have undergone rather significant changes. As a matter of fact, I am convinced we would now have a 2nd or even 3rd generation caseless rifle if the G11 had been issued 30 years ago.   

It is of course possible that the G11 would have been no success at all. But we will never know, because we never really tried hard, in my opinion. 

Isn't your example overlooking that the M4 of 1992 is rather quite different from Eugene Stoner's AR-15 of the 1960s?  No design changes leading up to the M4 of 1992?

The mortar ROE, if you read what I wrote, was an example(!) for Afghanistan ROE generally. I mentioned mortars, because I know from a mortar platoon leader how he was forced by ROE to idly look on in an incident, about which I will not go into detail.       

         

  • Edited 23 January 2022 16:07  by  JPeelen
stancrist

From: stancrist

23-Jan

JPeelen said:

I used the Mauser-Norris versus Mauser 98 as an example of a large number of changes that go into any design over years of accumulating experience in making and using it. The G11 being a totally new, more complex design would in my view have undergone rather significant changes. As a matter of fact, I am convinced we would now have a 2nd or even 3rd generation caseless rifle if the G11 had been issued 30 years ago.

I think that's unlikely, because it's inconsistent with history.  As an example, the MG42 was adopted 80 years ago, and -- except for a caliber change to conform to NATO standards -- was essentially unchanged during eight decades of service.

Armies typically are conservative.  I doubt that there would have been a second, let alone a third, generation caseless rifle in 30 years.  Far more likely, IMO, is that the G11 -- assuming it worked acceptably -- would have received upgraded optics mounted on Picatinny rail, and other minor changes similar to how the G36, M4, and other small arms were modified over the years.

JPeelen said:

It is of course possible that the G11 would have been no success at all.

Of course.  The G11 might have quickly proven unsatisfactory and been replaced by the G36.

JPeelen said:

Isn't your example overlooking that the M4 of 1992 is rather quite different from Eugene Stoner's AR-15 of the 1960s?  No design changes leading up to the M4 of 1992?

I'm not seeing how the M4 carbine of 1992 (or 2022) is "quite different" from the original AR-15.

Today's M4 is a lightweight, select-fire rifle that fires 5.56x45 ammo fed from a 30-rd magazine.

The original AR-15 is a lightweight, select-fire rifle that fires 5.56x45 ammo fed from a 25-rd mag.

The M4 has a telescoping stock and other refinements, but it's still basically the same as the AR-15.

JPeelen said:

The mortar ROE, if you read what I wrote, was an example(!) for Afghanistan ROE generally. I mentioned mortars, because I know from a mortar platoon leader how he was forced by ROE to idly look on in an incident, about which I will not go into detail.

I'm not asking you to divulge confidential information about any specific incident.  I'm only asking what mortar ROE you were referring to?

gatnerd

From: gatnerd

24-Jan

LMT has come out with a rifle in 6.8 TV. Somewhat significant as LMT is decent player in the international DMR market, so we could potentially see this rifle fielded should 6.8TV become adopted.

https://soldiersystems.net/2022/01/20/shot-show-22-lmt-mars-h-in-6-8tvcm/

roguetechie

From: roguetechie

24-Jan

Nah it really didn't, even if the bc was notionally higher the 5.56 rounds we use now are definitely much more capable at long range.

There are socom guys reporting that they have no problem scoring good lethal hits with m855a1 from a mk18 to well beyond 600 meters.

You're not going to cheat physics that much no matter how hard you push a very light very small bullet which is what g11 had.

Could g11 have had higher bc than m193? Sure, but m193 is pretty singularly unimpressive and was pretty much designed to be a 300 meter cartridge.

Does that mean g11 had higher bc than modern 5.56?

Lol NO

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