I was reading the PCC thread, and I wanted to know the opposite: With all the AR pistols and SBRs/PDWs coming out on the market these days, how do the rifle calibers do out of such short barrels?
I've heard that 6.8spc was developed to address losses in effectiveness of 5.56 out of shorter barrels, is this true? What about 7.62/.308?
Basically, are you still getting rifle level ballistics when you shoot these calibers out of shorter barrels from 8-14"?
I'm a total newb to rifles, so if there's an obvious site on which to find this info, maybe something like the rifle version of Ballistics By The Inch, just let me know!