I'm betting DAH is closer to 2.5 than 3" on the Greener, Doc. As for Mr. Bennett, he's certainly M1 nose to thumb so, yeh, I'd say he's crawling forward. How exactly do the shooters of the Greener and the hammergun support a refutation of the headsup "myth?" I'd say Bennett is bringing a stretchy neck to a short LOP. Make that stock an inch longer and I see no reason why it wouldn't demand a more erect head. I'd have to say that some of your previous photographs (of "turn-or-the-century" trap shooters) do support the idea that the bullethead approach has been around for a long time (at least among trapshooters).
jack