How to Sight In

The quickest method is to enter your chronographed arrow speed and sight radius — Sight Tape Gen calculates the rest. But if you want maximum accuracy, shooting real marks at the range and entering them refines the tape further.

The Two-Mark Method

This is the most reliable approach. You shoot verified marks at two known distances and enter the measurements into the generator.

Sight in at a close distance — 40 yards is ideal. 20 or 30 yards is too close; small errors in the mark won't be noticeable on target but will skew the tape at longer ranges.
Sight in at a second distance as far out as practical — ideally 60+ yards. More distance between your two marks = more precision.
Record both marks carefully. If your sight has a ruler, note the exact position. Otherwise, put a blank tape on the sight and mark it with a fine-point pen.
Measure the distance between the two marks in inches using a digital caliper. Aim to be accurate to at least 0.01".
Enter both distances and the physical mark measurement in the generator. It will back-calculate your arrow's speed profile from real-world data.

Tip: Aim at a thin horizontal line (blue painters tape works great) rather than a bullseye. Vertical deviation is much easier to see against a sharp edge. At close range, try to break the edge of the tape.

Tips for Reliable Marks

Shoot on calm days — wind affects vertical impact more than most archers expect at 60+ yards.
Shoot multiple arrows and use the average position, ignoring obvious fliers.
Verify marks on a second day if possible. Temperature changes affect arrow speed.
Use the same arrow and tip weight you'll hunt with.