I was out shooting my broadheads for the first time today and noticed that my broadheads were flying weird. I am shooting 4-5" groups with them, which is not good enough for me, but my arrows are hitting the same place.

Arrow 1 hits 1" high at 20 yards.
Arrow 2 hits 1" low at 20 yards.
Arrow 3 hits 1" low, 1/2" right at 20 yards.
Arrow 4 hits 1" low, 1/2" left at 20 yards.
Arrow 5 hits dead on.
Arrow 6 hits 1" left and 1/2" low.

I am shooting a BowTech Allegiance with a 27.5" draw and 65 lb draw weight. I am shooting 26 7/8"Easton A/C/C 3-60 arrows tipped with 100 grain 3blade Muzzy's. My heads have no wobble in them. I have rotated the nocks, but it only moves the arrow left and right. I am using a hard helical on my arrows. I also use a mechanical release.Any help would be appreciated.