buckeyebuckhntr, my mistake. I just assumed you were talking about plain arrow drop because anything else would be so far out of the ball park...

Here's what you said that is incorrect:

As you can see from the trajectory calculator's figures on Matt's situation, his 40 yardmidrange trajectory flattened barely a full inch and his point of impact only changed .7" or sofor his extra 22 fps!

In the real world, unless he changed fletching to a smaller size with less drag, the actual gain would be even less, because drag for subsonic projectiles increases by the cube of speed. Speed up the arrow, it encounters more drag and slows down quicker.

If you doubt that, try this little experiment next time you're driving down the highway. 22 fps is roughly 15 miles per hour. Set the speedometer on55 mph and stick your hand out the window. Now pull it in and speed up to 70 mph. Stick your hand out the window again. Compare the amount of wind resistance you felt at each speed.

Speed only increased some 21% but you can tell that wind resistance on your hand is a heckuvalot greater than that! Speed up the arrow and it encounters the same drag effect. Fortunately,the arrow'sfrontal area is much less than your hand, and it obviously has a more aerodynamic shape,sothe effect isnot quite as dramatic. Still quite apparentthough.