Don't try to shoot groups! I Took off field points and just put these on.The first 3 arrows I shota robin hood and a cut fletch offanother one. Messed up 2 of the first 3 arrows so I started shooting seperate dots. out to 30 yards they fly great. Field points,practice blades, and hunting blade all group together. If these are as tough as the other Muzzys I have a new head.