If your homeboy is telling you that his arrow is only dropping one inch between 20 and 40 yards - he's a flat-out liar. It's not possible with current archery equipment.

See, the thing about speed is - you can only get so much, and you will always be handicapped by your draw length and draw weight capabilities. If you want to take the "arch" out of your trajectory, you have to start cheating for speed. You can't just decide that you're going to draw 115# or stretch out your draw length to 32.5".

Here'sthe game I'm playing. At 29", 70# - I'm getting right around 350 fps. The thing is, I'm using a speed bow with a 285 grain arrow witha super-stiff shaft. (Most guys hunt at over 400 grains). In other words, I'm using a bow that's naturally built for speed, and I'm cheating on arrow weight. One thing worth noting is that there is only one bow on the market right now that will even warranty the bow while shooting with this kind of configuration (High Country). It's not conventional by any stretch of the imagination, but it works. It started as an experiment, but I'm so confident in it that I'm hunting with these arrows.

With conventional arrows, as you go down in arrow weight, you'll lose spine stiffness - and get a wet noodle effect. That's bad. You get too weak an arrow, and you just won't be able to shoot it very well. It happens. If you go light, you have tostay stiff. That's the problem. Nobody really offers a light, stiff arrow. (Except the HCA arrows, but they'll void your warranty).

As Goherd1111 noted, the Huntingnet "Big Arrow"Ethics Policeare always working the beat, and they'll be sure to give you a fun lecture on how you're hunting with some kind of inhumane setup by bumping down your arrow weight.

Note: The best speed I've ever clocked out of my bow was a 369, and even then, my 20 yard pin would be close to10" low at 40 yards. For hunting, I'm cheating a little bit - I have my 20 yard pin sighted in about 1" hot, and I'm pretty good to 35 yards if I just hold the pin a couple inches high. At 350 fps, I hit about 1" hot at 20, and about 3-4" low at 35. Those are legitimate numbers.

I love hearing people say "I'm one pin to 40 yards." Yeah, and I'm Santa Claus.

To get the real quick & dirty on your arrow's trajectory (what it is, and what you want it to be) - use this link. Very, very useful.
http://www.lmariana.com/traj.htm