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.