Rick James- I couldn't help but notice that you were using the 40 yard estimate on a 45 yard target - and you got over 1.5" of difference. I'm not sure what you're trying to prove. The ballistics calculator that I useshows the same thing:

-5"lowat 45 yds, using the 40 yard pin at 275 fps
-3.5" low at 45, using the 40 yard pin at 325 fps
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a 1.5" difference.

Go look for yourself. The cheapo freebie online ballistics formula spit out the same numbers as your archerysoftware program (because it uses the same basic physics formula).

Now: Go back in and enter the same data that I did - recreate my table. You'll seesimilar resultsto thoseI got. I'm not makingstuff up out of thin air - and the results don't lie. I know some of those drop numbers seem high, but go outside and shoot a 50 yard target with your 20 yard mark and see where your arrow hits. Have your metal detector handy.

The differences in trajectory (between fast and slow)become increasinglyamplified as you get further away from the zero.

Again, my chart illustrates that. Itshows a ZERO at 20 yards with a single pin(not 40) - just to show how a single-pin will hit at various speeds. You're either not understanding what the graph represents (not likely), or you're just trying to twist the numbers to show me that a slow bowdoesn'tmake as much difference as my graph would lead one tobelieve(likely).

...and yes, Todd. I stood on the range and shot every stake (10-50) with my 20 yard pin centered in the bullseyewith arrows moving at various speeds (up to 370) - and I documented the point of impact. That ballistics table damn near hit it right on the nose.

I hunt with one pin, and leave it locked at the 20 yard mark. If I'm taking a 40 yard shot, I use these very tests (confirmed by my real-world results)to know where to hold.


**Also- note RJ's illustrationswith the two points of impact. A 5-yard misjudge at 45 yards with a bow shooting 275 takes you just outside the kill and results in a long, sad tracking job. Meanwhile, a 5-yard misjudge at 45 yards with a bow going 325 = low vital lung hit. Dead deer.**

That's the crux of it. That's what 50 feet gains you, if you can get it.