The quote came from a memo published in 1931 regarding the M1 and its serviceability to the Army. I am responsible only for delivering the information in comment to the thread. I don't think there was a video made back then.Ahh... that explains it. So on the wishful video: ......never mind.
Allowing half-second per clip reload, that’s a new clip reload about every four seconds. An aimed shot every half second. It’d make for an awesome video!