Well thanks for the advice fellas. and let me tell you I did a bit of a test and ruined a few broadheads. my Rig is an 08Martin Cheetah, maxed out at 75lbs it suposed to go to 70 but we put it on the scale and it maxes at 75, So I got an MPro Cam in it, and my arrow is a 60/75 carbon express rebel hunter, 28 inches long, with magnus snuffer 125 gr 3 blade heads, and Blazer vanes. So my total arrow weight is 407gr. I do not have an arrow speed, but the cheetahs Bow Index is 320fps. anyhow, at 30 yards I sent an arrow cleanly threw a gander mountain layared foam target a 1 inch thick pin board, and almost all the way threw the other side of the other layed form gander target. So I know there is no substitue for Good shooting, but after i did that text I have grained a lot of faith in my rig and arrow combo.