hmmm....
 

I have 4 blade muzzy 100s.
I never really practice with muzzys during the off season because theres no hunting where I need a broadhead and during the summer they have 3d shoots which you can't have broadheads in.

Well its about a month before season and I need a bit practice with broadheads.

I just went out about a hour ago and I shot a little with fieldtips (100gr.) and I was shooting 2 inch groups with 5 arrows.

I put muzzys on 3 arrows and shot andone was dropping about a foot and flying left about 4 inch each time and then another arrow would fly about a inch high and 5 inches to the left and the other arrow would fly differant each time.

Well I got to thinking of the arrow, fletchings, nocks, and the broadheads. I twisted the nock so its straight with the oddfeather and I put the broad head so its straight like + and the arrows were shooting 3-4 inch groups after that.

Well if any of you have a problem with that, try making every thing straight with eachother.

I have a quick question...do o-rings really make a differance to the flight of the arrow.

RE: hmmm....
 

It's been proven time and agian that vane to broadhead alignment doesn't change arrow flight. Obviosly, your broadhead has 4 blades so they can't "align" with the fletchings. You have some other issue going on that nothing to do with vane to broadhead alignment. Maybe fletch contact with the bow or arrow rest.

RE: hmmm....
 

lol, i didn't mean getting the fletching and the broadhead exacually straight. For example I put my oddfeather down and I put one of the blades facing down.

Well it seemed to have helped a little bit because going from a foot out to 3-4 inch groups is much better.