I always shoot the Muzzy practice blades and tune the bow with em. Then I shoot last years real blades and make any fine sight adjustments. Usually this is unecessary or very very minimal. Finally, I shoot the actual arrows I plan to hunt with a couple of times to be sure. I then put the new blades on em and put em away for hunting. For continued practice, I shoot my other arrows with a combination of practiced blades and field points.