Actually Texan, wrong.
That is a direct quote from Major John Plaster, USMC, a person who knows just a tad bit more about sniping and long range ballistics and energy than you do. He's written several books on the subject, do a search, as well as he runs a very respectable school similar to ours, his being in the USA, while ours is in Canada.
970 is the highest muzzle energy I've seen for factory .44 mag. High 800's is a lowball figure for .300 win mag, 200 gr. rounds that most of the units I know shoot are all still well over 1000 ft/lbs at 1000 meters, so stick your BS meter.