Originally Posted by
OldBob47
CI,
Say you've got a bow that drives the arrow a bit over 300 FPS. Let's make an assumption that the arrow doesn't lose velocity very quickly, and averages 300 FPS over the 100 yard range. So, 300 foot range, 300 FPS, the arrow's time of flight will be 1 second. This means at 100 yards, the arrow's drop will be 32 feet. If we use the 40 yard range, the arrow's actual drop will be 32 X .4, 12.8 feet. If you increase the arrow's speed to 400 FPS, these figures become 24 feet at 100 yards, and 9.6 feet at 40 yards.
Just can't call this "flat shooting", huh?
OldBob
Bob = your calculations are WAY off. there is no way an arrow drops almost 13' at 40 yards. Geez Louise a recurve bow wouldn't do that!
What SH54 is saying is he can use one pin and only be +/-4" out to 40 yards. Now knowing SH54 I'm sure he compensates for shorter ranges by holding a bit lower and then a bit higher at the 40 yard range.
This would be on par with a hunter using a 300 Win Mag for example and sighting in 3" high at 100 yards and have an "effective" range of about 350 yards. Now before you go runing ballistics I'm sure I'm slightly off because I'm just guestimating out of experience.