Thank you for the input, and the referral to the Dr.’s forum. Right now I am like a sponge absorbing all the information I can. My arrow’s fly well and I have good consistency with accuracy and group’s (field points)so I will stick with 5″ for now. The true test will come when I try my broad heads, which are single bevel (just by chance) as I was not aware of the reports and testing of single bevel when I purchased them.