If you are shooting a release and anchoring under your ear/jaw the reason for the diference would be the string angle due to the ATA diference. Draw a triange a 40 units with a draw of 28 units on graph paper and do the same at 38. Not much diference but enough that the "feel" is going to be different at the tip of you nose.





Greg

"Getting close to the game is the joy of Bowhunting for me, the harvest is a bonus."

Live 15 ft Python after eating a small Antelope!