Older post...But agree with the APA...
Regarding bow speeds...
We have a chrony but keep it hid far from the shooters..
Reason is every shooter is expecting the UN-realistic speeds rated by bow manufacturers...machine shot... nothing on string cept for tied on nock point... some even with no vanes on arrows...bow maxed
NOW...really how fast is your bow…here are some factors...
Take rated IBO…
IBO speeds are based on a bow with a 30" draw set at 70lbs shooting a 350gr arrow.
-For every inch of draw length you go down you will lose 10 FPS
-For every 5# draw weight you go down you will lose 10 FPS
-For every 3 grains of weight your arrow is over IBO ( 5 grains per pound) you will lose 1 FPS
-For every 3 grains of weight you add to your string you will lose 1 FPS
So you can see why a bow rated 300 plus with a shooter at 28" draw @65 lb peep, loop string silencers, and a reasonable weight arrow on the "heavy" side is chrony-in at mid 250+ FPS
I hated to see the shooters ...all pumped up..expecting lighting speed in the Plus 300's...as rated.... but with bow set up as above...
Resuts were bumed out shooters...some not happy with more anymore or it effected their shooting and confidence...some doing silly things like shooting dangerously light arrows or shooting over poundage for them..all just to gain a couple inchs of speed...
The Chrony stays locked up and hid and are for those that truely know what the approx results truely are...
My advise of the day is ...If your happy with the speed of your bow without putting it thru a chrony...dont worry about the speed..your happy with it ...its fast enough...instead concentrate on putting that arrow in the X at all distances you will be shooting while hunting...
JMHO
Neil