IBO speed, draw weight, draw length and arrow weight — or just punch in your chronograph reading if you have one. A chrono reading is always more accurate. Save up to 8 setups for different bows or arrow configurations.
We estimate your real arrow speed using the ATA formula, accounting for accessories like peep sight, kisser button, silencers, and drop-away rest. Altitude correction adjusts for thinner air at high-elevation hunts.
Precise sight movement values are calculated for every yardage increment, scaled exactly to your sight radius. The physics is the same formula pros use. Unlock 80–100 yard marks with a one-time NZ$5 purchase.
Download the PDF, print at 100% scale (no scaling to fit!), cut and stick it to your sight. Or export a label tape PNG for a Brother label printer — sized exactly to your label roll width. Verify at the range before season.