ORIGINAL: Bubbahoo18

This weekend I was shooting my bow and began with field tips. I was hitting the mark and shooting good, tight groups. I probably shot 30-35 times with field tips. Then I switched to broadheads just to make sure that they would fly the same. Well, when I switched to broadheads I consistently hit low and my groups weren't as tight.

Now, my question to y'all, from your experience, how do broadheads typically fly different from field tips? Should I adjust my sights?

Or, could it have been my arm and shoulder getting tired and the 100 degree heat that I was shooting in that was affecting my shot?