.177 / 4.5mm
Most popular UK air rifle calibre. Flat trajectory to 25yd, significant drop beyond 40yd. No BC needed — Reticle Plotter uses a parabolic model.
Enter your pellet velocity and zero distance. Reticle Plotter calculates exact holdover positions for every target distance and places BDC marks directly onto your scope reticle. No BC needed for air rifles.
Settings guide for the three main air rifle calibres
Most popular UK air rifle calibre. Flat trajectory to 25yd, significant drop beyond 40yd. No BC needed — Reticle Plotter uses a parabolic model.
Heavier pellet, more wind resistance, greater drop at range. Zero at 30–35yd to minimise holdover within typical hunting distances. Parabolic model accurate to 50yd.
Less common but popular for hunting larger pests. Significant drop beyond 30yd. Parabolic model works well; enter actual chronograph velocity for best accuracy.
No. Reticle Plotter uses a parabolic model for air rifle use which only needs muzzle velocity and zero distance. BC is optional and most useful for centrefire rifles at 200+ yards.
For field target and HFT, 30–35 yards is most common. This keeps the pellet within a tight window from 10–40 yards and gives useful holdovers for targets at 50+ yards. For pest control in a garden, 20–25 yards may be more practical.
Very accurate for the parabolic model within its range. At 50 yards, expected accuracy is within 0.2–0.3 mils of actual drop for a well-characterised airgun. Chronograph your rifle and weigh your pellets for best results.
Yes. First focal plane (FFP) scopes maintain mil calibration at all magnifications. Reticle Plotter works with both FFP and second focal plane (SFP) scopes — for SFP, use the app at the magnification where your reticle is calibrated (usually max power).
Yes with a Pro account. Export at your chosen scope diameter in mm and up to 600 DPI. Print and laminate as a quick-reference card for field use.
Free account — no card required. 7-day Pro trial included with every signup.
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