I have a problem with shooting my bow all of a sudden. I am shooting a Browning Boss Mantis with about 68# draw and carbon arrows with fixed broadheads. After practicing the other nite, I was more then deadly at 20 yards and decided to stop for the evening. Next day, I start to shoot and everything is going to the bottom of my target bag. Nothing had changed as far as I can tell. I messed around with the sites some and was back to being deadly again. next day, same thing... start shooting and everything is going to the bottom of the dang bag again. I just can't figure out what I am doing wrong. any ideas from you pros out there?

Your knock may be sliding up the string. CHeck to see if it has moved.