I haven' t read the article but it sounds like nothing new. They' ve been printing that ' KE is more important than momentum" drivel for a long time. It' s just as big a lie now as it was the first time they told it. If you' ve read Ashby' s study, he goes into great detail on why KE is NOT the prime factor in penetration, BY THE SCIENTIFIC DEFINITION OF THE TERM.

Now, if you take an arrow of given weight, and shoot it from two bows, one shooting it at 220 fps and the other shooting it at 270 fps, you get increases in BOTH KE and momentum. You put up bigger KE numbers with speed than momentum, and since speed sells and lines their wallets, that' s the term the industry insiders want everyone to believe is THE thing.

See, if you take a 350 grain arrow and shoot it at some 300 fps, you get around 70 ft lbs of energy. My longbow shooting a 580 grain arrow at 185 fps only puts out 44 ft lbs. Now if KE was the determining factor, why would my arrow pass thru a 350 pound feral hog, just as easily (if not moreso) as the 350 grain arrow? My arrow carries .4822 lb secs of momentum. The 350 gn arrow carries .4719 lb secs.

Two arrows that will achieve pass thrus. The slow, heavy one carries 37% less KE than the light, fast one. The light one carries only 2% less momentum than heavy one. It' s momentum that is the common factor, not KE. Just looking at that example and using a dash of common sense would have to tell you that Holt' s opinion (and a heckuva lot of other writers as well) of KE being the #1 factor is a bucketfull of hogwash.

But isn' t it a lot more impressive saying your bow is putting out SEVENTY FOOT POUNDS of KE rather than saying your arrow is carrying .4719 pound/seconds of momentum? They' re baffling you with BS because they can' t dazzle you with the truth.

Just remember, it' s the little unassuming number with the decimal point that you really want to watch closely, especially when you know your bow is not whacking out gobs of KE.