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

Except we do actually know because the LSAT program very explicitly picked up where g11 left off... And failed miserably.

The case less failed so bad they outright stopped testing caseless at all way earlier in the program than it was initially planned to.

Given the time Delta between the two programs, and the massive technological progress in that time, it's pretty safe to say that had g11 been adopted it would have died in disgrace (likely after a disastrous German Afghanistan rotation) with no caseless replacement in sight.

Looks like a very long (22-24") barrel?

roguetechie said:

Does that mean g11 had higher bc than modern 5.56?

The C7 of the M855A1 is not really impressive, only 0.149.

Still better than M193 or Mk318, but that's not saying a lot...

JPeelen said:

Three decades later, technology may offer other ways to try something new. But I stay with my opinion that at the time it was the right thing to at least try something really new to solve the hit probability problem in the expected cold war infantry scenario

I laud them for trying something new.

I personally think they should have tried something else new rather then the jump from G3 to G11. Especially for the envisioned 'fighting in a MOPP suit in a contaminated wasteland against hordes of advancing Commies' where life expectancy was supposed to be hours-days. 

Simply going from FAL to AUG proved a solid boost in firepower and hit probability for the Austrians, and was ready by 1977.

Creating a 'micro-42' scaled down MG42 in 5.56 (or 4.6x36) could have been another option for mowing down hordes of Reds.

Or rather than hyper burst, pursing controllable FA fire ala Ultimax, where controllability was achieved by eliminating bolt impact. 

There were a number of more likely to succeed design paths they could have pursued rather than the G11. 

stancrist said:

Looks like a very long (22-24") barrel

Yes I'm not sure what to make of that.

-The barrel length was simply a holdover from civilian 6.5C rifles

-The barrel length was chosen at random for the show

-The 6.8TV needs a long barrel

-The 6.8TV performs even more aweseome out of a long barrel

-Theres a contract for this specific configuration

?

gatnerd said:

Yes I'm not sure what to make of that.

I vote for your third option.  To get the advertised 135gr @ 3000 fps, 6.8TV needs a long barrel.

       Introducing the 6.8 TVC for MARS-H - Lewis Machine & Tool Company (lmtdefense.com)

I seem to recall that the concept for the TV round was that it ran at a lower pressure and used a longer barrel, hence the RM277 being a bullpup.

if you guys could design the perfect ACR for hit probability, what would it be like

Thanks.  I had intended to say something to that effect, but it slipped my mind.

A follow-up note:  Although the barrel looks unusually long in the pic that gatnerd posted, it may only be 20 inches, like the MARS-H 6.5 DMR