Harson Ballistics Calculator

Harson Ballistics is a rifle ballistics calculator built to work where you actually shoot: no signal, no account, no waiting. Set up your rifle, scope and load once, and every solution after that runs on the phone. WHAT IT DOES • One-page Solve screen: dial in range, wind and angle and read your hold at once, with a wind clock and a live hold on your reticle • Drop and windage in MRAD, MOA, clicks, cm or inches, with metric or imperial setup • Uphill and downhill shots solved properly, with the hold measured square to your line of sight • Reticle view: your holdover drawn on your actual reticle, scaled to magnification, with illumination colours and a red night mode • Range card: a full drop table for the scope cap, shareable as a card • Flight Path Lab: side and top-down views of the bullet's path, so you can see what wind, zero and sight height really do • Zeroing helper, truing from what you saw on target, QNH or station pressure, and spin-drift, Coriolis and transonic warnings when they matter THE ENGINE Point-mass trajectory with G1 and G7 drag, velocity-banded ballistic coefficients where the bullet maker publishes them, air density from actual temperature, pressure and humidity, and Miller stability from your twist rate. Every result is cross-checked against an independent reference solver before release. RETICLES 396 reticles from 17 makers, drawn as real vector geometry, not photographs. Every reticle marked Verified has been checked mark-by-mark against the manufacturer's own published spec sheet. See every verified reticle drawn to scale with its subtensions before you install: harson.ai/reticles Free reticles: generic Mil-Dot, MOA Hash, Duplex, German #4, Fine Crosshair and the Harson MRAD Ladder. The manufacturer library is part of Harson Pro. Verified now: 190 of 396 Vortex 78 · Schmidt & Bender 33 · Leupold 28 · ZeroTech 19 · Nightforce 11 · Athlon 4 · SIG SAUER 4 · Hawke 3 · Burris 2 · Kahles 2 Also included and usable while verification continues: Zeiss, Meopta, Bushnell, Primary Arms, Steiner, Swarovski, Arken and the rest of the makers above. Scope not listed? Ask from inside the app. BULLETS 234 bullets from Sierra, Hornady, Berger, Barnes, Nosler, Lapua and others with the maker's published BCs, and 48 factory loads across 11 cartridges — .308 Win, .30-06, 6.5 Creedmoor, 6.5 PRC, 6.5x55, .270 Win, .300 Win Mag, 7mm Rem Mag, 7mm PRC, 8x57 JS and 9.3x62 — which fill in the projectile and advertised velocity in one tap. 182 of the 234 bullets and 47 of the 48 loads have been checked against the manufacturer's current published figures, and every record carries its source. Where a figure hasn't been double-checked, the app says so on the screen where you take the shot. A published BC is a starting point either way: true your velocity and confirm your dope by shooting. If your load isn't listed, enter the figures off the box and it's a first-class profile like any other. FREE, FOREVER The solver, the reticle view with the generic reticles, the full bullet and factory-load library and your own custom bullets, two rifle profiles, truing, and export of your own data. Offline. No account. No ads. HARSON PRO • The manufacturer reticle library: 390 reticles from Vortex, Leupold, Schmidt & Bender, Hawke, Zeiss, Burris, ZeroTech, Kahles, Meopta, Nightforce, SIG SAUER and more • Unlimited rifle profiles • Flight Path Lab's what-if controls: change velocity, zero and wind and watch the path move • New reticles, bullets and loads pushed to you as they're checked, not just at app updates • Priority reticle requests: your scope goes to the front of the queue Pro is monthly, yearly with a 14-day free trial, or a one-time lifetime unlock. No gated ranges. If Pro lapses your solutions still work in full and you keep a free reticle; only the manufacturer drawing waits for Pro. Built on the Sunshine Coast by shooters who wanted the app we couldn't buy. Questions or a reticle to add: [email protected]