Quick Answer
You know when to adjust your arrow rest angle by monitoring the arrow's deviation at different cam positions during paper tuning, specifically focusing on the point where the arrow's flight begins to deviate significantly from the target.
Initial Arrow Flight
When setting up your compound bow for paper tuning, begin with a standard cam timing and a slightly high arrow rest angle. This allows you to visualize the arrow’s flight path more clearly. Shoot several arrows at the target, and observe the arrow’s trajectory. If the arrow consistently starts to veer off to one side, typically at a consistent cam position, it’s time to adjust the arrow rest angle.
Measuring Arrow Deviation
To accurately measure arrow deviation, use a high-speed camera or a slow-motion mode on your bow’s scope. This will help you identify the exact cam position where the arrow starts to deviate from the target. Take note of this point, as it will serve as your reference for adjusting the arrow rest angle.
Adjusting Arrow Rest Angle
To adjust the arrow rest angle, start by making small increments (about 0.1 to 0.2 degrees) to the arrow rest’s angle. After each adjustment, retune your bow using the walk-back method and re-shoot several arrows at the target. Monitor the arrow’s flight path, and repeat the process until you’ve achieved the desired level of accuracy. Keep in mind that minor adjustments can have significant effects on arrow flight, so be patient and methodical in your approach.
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