I shoot them and love them. It shoul only affect your arrow weight by about 18 grains. Mine fly like darts at least out to 40 yards anyway. That's as far as I can shoot in my back yard. I also have arrow wraps on my arrows so add another 10 grains on top of that. I shoot feathers instead of vanes though, so that offsets the weight difference on the tail a bit. They are awesome and I won't have a hunting arrow without them. They look especially awesome at dawn/dusk.