I just did a quick web search (at work) and could not find it, but there is a guy who advertises in Shotgun News, pretty sure it is Uncle Fred's, who has a lot on the M-14/M1A rifle. He seems to consider it the best battle/SHTF rifle and posts quite a bit about shooting it properly. I'll check for it when I get home and post more if no one else beats me to it.
"No matter where you go, there you are." Buckaroo Banzai