After using a 6.8 SPC upper on my M4 I can tell you this, I now understand why they call this round the “200 yard sledgehammer”.
It hasn’t got a whole lotta’ ass after 300 yds, but up to that point, anything it hits is DRT. That’s dead right there for the uninitiated.
Let us all be grateful that the creep in Colo. did not have this upper on his AR.
Also, let us be grateful that he knew nothing of actual combat otherwise he would have ditched that stupid 100 round mag for a half a dozen 30 round clips. They would have given him more firepower and almost no danger of jamming. If one were to fire 100 rounds through an M4 without stopping, the barrel would most likely fail before you got to 100.
As a bonus, if he knew anything about close quarter combat, he would have known that a dozen or so loaded clips carried in a load bearing vest would have provided him much more protection from incoming rounds than that hoakie looking Halloween costume he had on. I think that he was more concerned about looking more like Batman than actually stopping any fire coming his way.
Besides, he knew that everyone in that theater was unarmed and helpless. Let us all thank God that he wasn’t all that smart.
Well, if he’d really known about combat, he would have known his rifle took magazines and not clips.
I was planning to order a 6.8 upper in two weeks. Then the shooting happened and I ordered it on Monday. Over the weekend, lead time for uppers went from 60 -90 days to 120 days, but at least I got on the list. C’mon October.