Sounds reasonable to me. Just passing on what I found in a book from the 1950's. I agree with you though in that the clothing might have stopped the 45, but the .30 Carbine is a high velocity round. S.L.A. Marshall also passed on that information about the 30 Carbine not being up to snuff, but as we all know Marshall's research is viewed by many nowdays with a skeptical eye.
Those who beat their swords into plowshares usually end up plowing for those who didn't. Ben Franklin