Okay two questions for the gurus.

1. What weight arrows are used to establish the IBO speed of a bow?

2. How would you determine approximently how many FPS are lost per gram of arrow weight above the IBO weight?

I don' t want to drive 30 miles to get my bow chronoed, I am lazy!

5 gr. per pound, 70 lb at 30"
Single cams 1 fps loss per 3 grains added.
duals 1 fps. loss per 2 grains added.

nub you are the man!!! Now I have a rough estimate of my KE! 65-70 lbs!

Don' t forget about all the junk on your string

I figured that in smarty pants!!! LOL If anything I went a little on the low end of the KE. You use Spitfires don' t you? What kind of KE are you getting?

brass nock 2-4
peep 3-6
string silencers up to 6
peep tubes 6-10
loop without nock 1-3

All these numbers are assuming you own a Bowtech.[] But they should still give ya a guesstamit.

Hey Taz.. I am from the big " Fred" myself... you dont have to go 30 miles to get your boy on the graph.. I am assuming you are talking about going to Manassas!

There is a guy in south Stafford who has one I am pretty sure....I know he sells bows and does custom cresting and tunning and all that stuff so I am pretty sure he said he had a chrono...

Altough I am a fan of the shop in Manassas so I make the drive when I need something!!

Let me know if you would like his name and or number..

eng40sqd heck yea I would like his name and number! Does he own a shop? Does he do good work and know what he is doing and talking about? My email address is [email protected]

Taz.. I dont have it with me here at the office but I will email it too you when I get home. He seems to know what he is talking about..only bad thign is he doesnt sell HOYT hehe....