FLIGHT TUNING
To begin flight tuning you will first need a large enough back stop to make a cross that is at least 10" in size.
With a level, make a horizontal line through the center of the target and then another vertical line through the center of the horizontal line.
Make the line large enough to be visible from 30 yards but not overly large. Start at 10 yards from the target.
Aiming at the Horizontal line, adjust the sight so that you are hitting the line.
Now move back to 15 yards.
Using the same pin, shoot at the horizontal line.
Where is the arrow?
If it is high then adjust the rest down 1/32" at a time until the arrow hits the line again. If it is low, move your rest up 1/32" until you hit the line.
Now move back to 20 yards and shoot again using the same pin that you used at 10 yards.
Adjust in the same manner as you did at 10 yards. Move back to 30 and again shoot the horizontal line.
Make adjustments as were done at 20.
Now you are ready for vertical tuning.
Moving back up to 10 yards aim at the vertical line and adjust the sight to hit that line.
Move back to 20 yards and shoot that same line.
If you are left, move the rest to the right 1/32" until you hit the line.
If you are right, then move the rest to the left 1/32" until you hit the line.
Move back to 30 and again shoot the vertical line.
Make adjustments as were done at 20.
You are now flight tuned.
This tune may be right on for your broadhead but you must finish with a broadhead to know for sure.
Repeat the horizontal and vertical line shots at 20 and 30 yards with your broadhead. Adjust the rest as necessary to make the arrow hit the lines.
A broadhead is a great fine tuning tool and will allow those with less than perfect form to better flight tune their set ups because of the exaggeration that the broadhead will cause when tune defects exist.
Before you begin shooting, you will need to check your broadhead equipped arrows.
After installing your broadheads, make sure they are perfectly straight on the shaft.
This can be done by spinning the arrow on a flat counter while checking for any broadhead wobble.
You can also use a commercially made spin check tool.
Below is a graph that explains flaw and correction methods
Just so you know, this calls for moving the nock point up and down for high and low groups. Move the rest instead, it is easier.
Curiosity killed the cat, but I was a suspect for a while......