I have 8 arrows I use for hunting. They weigh within 3 grains of each other with broad heads and vanes ready to shoot. I spin them to assure the arrows and the broadheads are straight.

I have them numbered and I shoot several secessions before hunting season. I shoot them all at different spots, different yardage and record on a written chart the location of each hit. I usually shoot 2-3 rounds at each secession 16-24 arrows. If I am not getting the tight group I need. I do some tuning until I do get a good group.

After a few secessions I am able to tell which arrows are giving me the best results...usually all pretty close to the same point of impact.

I use heavy insulation for my target and screw the broadheads off before pulling them out to save on target wear. I use enough layers of insulation so the broadheads penetrate about 6" through the board.

Then I put away the dull replaceable blades, put on sharp blades and I and ready and confident.