this is cut from Dr. Ashbys papers report three twards the bottom just my two cents seems he agrees a hevier arrow has better penatration but he likes a single blade broadhead[:@]


Broadheads and arrows for the 'super big' animals are an entirely different subject, as is hunting them. For what it is worth, my goal on BIG animals is consistent penetration to the fletching on chest shots, with broadheads remaining undamaged.



If you want to turn your hits into kills, my advice is: Use any bow you like, compound, recurve or longbow. Hunt with the heaviest draw weight bow you can handle (and 'handle' is the key word here).



Select a quality single blade broadhead of a long and narrow shape. Mount it on as heavy a shaft, of as small a diameter, as your bow will shoot with reasonable trajectory. As we shall see in Part IV: The Physics of Arrow Penetration, extra arrow mass does a lot to offset lower bow draw weight or arrow velocity.



Use a minimum of 650 grains total arrow weight for most big animals and 900 grains if after the 'super big' animals. Don't worry about arrow speed. Practice until you can place your arrows in the 'kill zone' at the range you intend to shoot.



Study your quarry's habits and practice your hunting skills. The heavier arrows do cost you some 'range'. Get close to your game before shooting. Get your broadheads really sharp.



That, in total, is my personal formula. It usually results in finding the quarry, quiet dead, at the end of a rather short blood trail. Is it 100 percent effective? Almost. Out of several hundred animals hit with such an arrow and broadhead, only two failed to end up hanging in my camp