ORIGINAL: GGBH
Two of my shooting buddies had the same problem and tried everything they knew of and nothing helped. I took one of my Slick Tricks and put it on his arrow and that fixed the problem. Dont ask me why but the Slick Trick was the only B/Head that would group with the field points.
The problem is somewhere in the tuning. My Hoyt Protec shoots same hole groups.
Im not in the business of selling broadheads Im just offering a suggestion. Hope you get it fixed.
GGBH
EXACTLY!!!! Sometimes it ain't the bow - it's the broadhead. Even out of a perfectly tuned bow from a shooting machine, different broadheads will impact different spots on the target. Look at this test from a shooting machine with a well tuned bow. Notice how the point of impact varies just by switching broadheads. This is also true for mechanicals but to a lesser degree....
http://www.mucc.org/BroadheadTest.htm