Because of the stupid convention in place, self evident, it's not to those, well limited.

You're denying reality, bullet matters, bore is merely the convention, fact. Don't like it, you don't like reality. 6.8 or .277 or the true 7mm as it should be called is still closer to the ideal caliber of 7mm, regardless of the number, you cannot contradict this. You say irrelevant, but you miss the point of why that size... maybe reality is irrelevant for those that live in lala land. And lastly, the "convention" being "official" or whatever doesn't magically make it right... it's not... it's just that a convention.

Yeah deny all the mud that Bill and his acolytes have thrown over people doing good work. Denialism, again is a symptom of those disconnected from reality. But then reality doesn't care about you and the true 7mm caliber will be vindicated as the NGSW rolls out.

Sten556 said:

...bore is merely the convention, fact. Don't like it, you don't like reality.

Actually, I'm okay with bore size being the convention.  It's you who doesn't like it.

Sten556 said:

6.8 or .277 or the true 7mm as it should be called is still closer to the ideal caliber of 7mm, regardless of the number, you cannot contradict this. You say irrelevant, but you miss the point of why that size...

Okay.  Explain to me why 7mm (.284" bullet) is the "ideal" caliber.

Sten556 said:

...maybe reality is irrelevant for those that live in lala land.

I wholeheartedly agree.

QuintusO said:

So you are literally comparing a shoulder fired gun to a tripod mounted crew served AGL and saying "oh yeah if muzzle velocity was so important with computer gunsights why did the US Army  dramatically reduce the projectile mass of the 25x40mm to achieve a V0 that isn't even quite as high as an AGL's? Checkmate, atheists!"

Sorry, but I'm not the one who made the comparison (XM25 vs. Mk47), I was just a guy replying to him...

convention =/= right

He said "something like an XM25", he said nothing about using the same caliber. Just seems... A little obtuse to not get that?

Whether or not it is or is not "right" is a matter of opinion.

However, the convention of bore size = caliber is a reality. 

What was it you said about the people who deny reality?

Or maybe the whole point of velocity being not so good because of the handcapty in weight, recoil, cost and complexity should be obvious. The go fast boys would want our troops carrying tripod weapon int combat because the muzzle velocity certainly makes up for it... that post exemplifies it perfectly the advantages of a sensible solution.

Are you going to explain why 7mm (.284" bullet) is the "ideal" caliber?

Maybe you should educate yourself more and read the work of Mr. Murray, he does that better than anyone else. But basically it's the ideal compromise of range, stopping power, recoil, etc for a rifle. It's the one size missing until now.

When Murray talks about 7mm being the ideal caliber, he's referring to .284" diameter, not .277" diameter. 

So, if NGSW does get adopted, we will have a caliber that's smaller than his supposed "ideal" (7mm) caliber.