Maximum Effective Range

[stanc]

rabiddawg, I am seeking what range the military would say the maximum effective range of the Grendel would be if it was a standard issued weapon. For some reasons (testing I would guess) they landed on 550 yards for the M-16.
What is the test criteria to determine Maximum Effective Range? (not a personal number an expert could make but what an average Joe should be able to do) There is a range where the bullet in no longer considered lethal combined with lack of hit probability.

The maximum range at which a military rifle bullet remains lethal is far greater than the maximum effective range.

Your post made me curious, so I spent a little time doing a search. What I found said exactly the same LR1955 did:

This is the maximum range at which an average shooter can hit a human-sized target 50% of the time. http://gunwiki.net/Gunwiki/FactorsOfEffectiveRange

I hate to cite wiki as a reference for anything, but I found nothing else on the subject that was the least bit useful.

The only other info I have is an old (March 1970) American Rifleman article, "The Practical Range of Small Arms."

But, that article discussed Swedish Army standards, which was 1 hit made out of 7 fired (i.e., 14% hit probability).