Ballistics, reloading and gear. On your own server.

Know your hold

A ballistics calculator with a bullet path chart, range table, printable dope cards and Field mode for the bench.

See your scope's reticle with the hold drawn on it, and log range trips with conditions, rounds fired and target photos.

Watch every shot land

Put your phone on your spotting scope and aim it at a printed Range Book target. Fire, tap Shot (or let it listen for the bang), and Range Book marks the new hole with a number, with the group size, MOA and mean radius.

• Off to the side is fine. The corner squares tell it how the paper is tilted, so the measurements stay right from an angle.
• Your reticle over the target, drawn to scale with the hold for that distance, so you can see where the crosshair sat.
• Watch or control it from an iPad at the bench while the phone stays on the scope. Or start it on the iPad and use the phone as its camera.
• Shot by shot in a ladder: each hole is matched to its chronograph velocity, so you can see whether faster shots hit higher.
• Print the targets from the app (Letter and 11 × 17), or tap the corners of any other paper target.

Your phone only allows the camera on a secure (https) address. The README shows how to set one up.