You heard wrong. IBO does not do velocity testing on bows. This "IBO standard" baloney is nothing more than a marketing ploy used by manufacturers to sell bows. Fact of the matter is, there IS no IBO standard. Here's the true story on this myth.

The whole thing started when IBO made up their 5 grains per pound of draw weight rule. At first, they had no arrow weight limit or draw weight limit, and people were going to insane lengths to gain arrow speed. Some would shoot 100 pound bows with 300 grain arrows. Shooters were getting hurt because their bows were blowing up, and innocent bystanders were also getting hurt from the shrapnel. IBO didn't like seeing so many of their tournament participants going to the hospital and, since they couldn't count on these speed freak guys getting any smarter, they instituted the 5 grains per pound rule and topped draw weights at 80 pounds (90 pounds for traditional class).

Then guys started seeing what kind of speeds their bows would put out, keeping arrow weight legal under IBO rules, and talking about the "IBO speed" of their rigs. They could just as easily shoot 400 gn arrows on 80 pound draw bows at 34" draw length and still call it "IBO speed." But then the manufacturers picked up on the idea and decided to quit advertising their anemic looking numbers with the AMO industry standard . Instead they decided to scam shooters, because they could fudge the "IBO speeds" where they couldn't violate the testing criteria on AMO speeds.

What they've done is to kinda stick part of the AMO standard - the 30" draw part - together with IBO rules - the 5 grains per pound part - and settled on 70 pound draw weight, figuring that's the most poundage the average 3D archer or bowhunter would shoot. Then they started advertising "IBO speeds".

Whereas the AMO standard is a true standard, listed with the American Society of Materials and Testing, the so-called "IBO standard" is nothing more than a cobbled together menage of bull dung. IBO has nothing to do with it. On the other hand, they never have raised any official objection to manufacturers using their name for advertising purposes either.