I have a new black ice that I have been shooting for the last 4 months. I have had it sighted in a couple times with 2 differnet sights. each time I got it what I thought was sighted in pretty good, the next time I shot it would be off in distance.
I now have a single pin adjustable sight and had it perfectly sighted in and marked on the paper.I put 5 arrows in a 2in group at 50yrds so I was pretty sure of myself with my bow at that distance and others closer. last night I was shooting at 40yrds and had to move my adjustment up to the 50yrd mark just to get it to the target. it seems like my string has stretched and then I loose volocity. Anyone have any experiance with this or any advice i would appreciate it because I am getting VERY frustrated with this reoccuring problem.

thanks