Martin 06 Slayer, Nitrous C, shoot thru, 63lb, Quiktune 3000, HAA OL 5519, Beman ICS Hunter
Martin 06 Slayer, Nitrous C, Shoot thru, 55lb, Quiktune 3000, HHA OL 5519 2X, Easton A/C/C
Ben Pearson 1968 'Cougar' 62" 45#s @ 28" recurve, parallel shaft POC, Zwickey 'Eskimo' 2 blade
I've found this on another forum:
"ATA (Archery Trade Assoc.)- Is strict. Exactly 70lbs. an exact 30 inch draw and exact 350 grain arrow. ATA is also shot with fletching or vanes on the arrow and with a D-loop on the string.
IBO- 30in +/- .75(usually +) and shot anywhere from 70-82 lbs with a an arrow that is 5 grains per pound. IBO shoots off the string without a d-loop which is a touch faster and they shoot without fletching or vanes on the arrow which cuts down on drag on the arrow so it is faster."
Also got this on another website:
"For those with questions regarding ATA/IBO velocity: ATA speeds are 70 lbs, 30 in. draw at 5 grains per lb. IBO speed is commonly believed to also be tested at 70/30. However, in actuality, the IBO standards allow for speeds to be tested at poundages as high as 82 lbs as long as the arrow is at 5 grains per lb."