Yes, but this did not discontinue common usage of the nobility prefix "von" [occasionally "zu"] denoting nobility in the family lineage at some point in time. Look at a historic atlas of Germany before unification was achieved under Bismark. The area we now know as Germany was as late as the end of the 19th century comprised of dozens of separate countries (e.g. Prussia, Saxony, Palatinate, Saxe-Coberg, Bavaria, Hanover, Westphalia, etc). Each had its share of noble families using the von prefix. And many families lost their official titles due to various reasons but continued to use the nobility prefix. It is estimated that at the time the Weimar Republic abolished nobility, as many as three hundred family names outside the official nobility were using "von." Perhaps this fella actually is from a family that was still officially of the nobility class when nobility was officially banned, and he uses the title "prince" to differentiate himself from the "pretender" families using von in their name then and now.
"Shoot on the Move" it's called. We used to perform it on the riflery team at school. I believe it has European origins (as did our Instructor!) As I grew up on a river, I did a lot of shotgunning for waterfowl, but also lotsa rifle shots at fam farms and later competition. Although I've made some nice shots on moving/running game, nothing feels more natural (after the aforementioned shotgunning w/ pumps and autos,) than using my .3006 pump carbine w/ leupold dot on moving targets...it's very much like the shotguns, but yes you're aiming and/or leading a bit depending upon the circumstance. It's fairly easy if practiced, and a lot of motivation to drop that buck doesn't hurt either!!!
We've rolled tires w/ targets down hills for both this and prior to Africa (w/ a proper soil embankment as backstop, of course.) It comes naturally w/ some practice. Not all shot opps are going to be TV broadside still! That's for Jim Shockey w/ the big buck eating the bait behind the log! 
With respect to Africa, I can only recall shooting impala and springbok on the move, and a gemsbok and kudu that were both walking. I would love to bring that beloved pump over to Africa oneday for just such things (it's currently loaded w/ 200 gr Nos PTs for our combo bear/deer season at home, which of course is perfect for PG across the pond!)
Me thinks you too modest sir!
The shooter you are talking about is Matt Drake of Sunnydale Shooting Sports out of Sequim Washington………. His father was a fantastic shooting coach. “You must train your mind to be perfectly calm……."…
His father was quite elderly when I took lessons from him in the late 90s….. so I would imagine he passed on years ago…… I enjoyed his humor and his lessons….. the mind calming technique I found to be especially effective as I later incorporated it into my everyday affairs….. It just does no good to get emotional or upset if possible….. just stay CALM…. TRAIN YOUR MIND….
