External rifle ballistics approach to archery and projectile stabilization.

[Fast14riot]

This is why I like my long bow, lol

 

[MikeT49]

1. You have to start with straight arrows. .001 is good. 2. Paper tune with field points that match the profile of your broadhead. Perfect hole with a drop away rest, a smidge nock high if a prong style rest. 3. Shoot groups, tweak your tune, verify cam timing. 4. Shoot your numbered arrows enough to eliminate the flyers. Use the flyers to shoot skunks, etc. Don't use them with broadheads. 5. Spin test your broad heads with a no chit spin tester, use a white sheet of paper below/behind the tip of the broadhead. ZERO wobble is what you want. ZERO wobble is what you want. 6. Check paper tune with broadheads & tweak as necessary.
When I used to be able to shoot a vertical bow, I shot Combi points for field points and Rocky Mountain Titanium 100s. Same length, same FOC, no spine effect difference. Easy peasy to tune. Field points and broadheads shot to the same POI.
Things were so much simpler when I was shooting my Howatt Hunter recurve with fingers, no sights. Herter's Ram X aluminum arrows.