Sorry guys but I disagree. I am shooting a Right Helical(which by the way, is recommended to prevent broadhead planing) and I can get 2" groups of 4 arrows at 30 yds. and I can repeat with the same with Broadheads.

I experimented several things this year. 1st dozen arrows bought had right offset 4" vanes. Broadheads tuned to within 1" of fieldpoint points of contact at 20 yds. After shooting around 1000 shots and arrows going through targets and being hit by other arrows, most needed refletching, so I went to 4" RT helical Feathers. Sights were off left about 3" at 20 yds. I split the knock of one arrow with another and then robin-hooded two. So I picked up another 1/2 dozen arrows. At this time, I didn' t pay attention to the fletching because I refletch my own. These were 4" vanes with an left offset or 2 degree left helical no more. With fieldpoints they flew just as the others, but, with broadheads they were dropping 8" at 20 yds. No left and right movment, just down.

I refletched all of my arrows to have a 4" right helicial feathers and now my broadheads and fieldpoints are hitting the same holes all the way out to 50 yds. I am shooting a 6 degree helical. I have robin-hooded an arrow at 18 yds with fieldtips and have cut fletchings off of others from 25 yds with broadheads.

The arrows are Easton Carbon Evolution 400' s 26 1/2" . 100 gr Thunderheads or 100 gr fieldpoints. Bodoodle 3 prong rest.(takes some tuning to get the correct vane clearance). All on a 2003 Hoyt RazorTec at around 260fps.