Guides

Airgun & rimfire ballistics, explained.

Short, honest guides on the physics that decides where a pellet lands — ballistics calculators, BC truing, pellet drag, and the units you hold with. No fluff, no fabricated numbers.

Tools

Run the real ballistics engine, free, with no install.

Free tool

Airgun ballistics calculator

The PelletArc Rust core, compiled to WebAssembly — live holdover in your browser.

Compare

How PelletArc stacks up against the tools you already know.

Comparison

PelletArc vs Strelok

The airgun-first Strelok alternative — and how to import your existing profiles.

Comparison

PelletArc vs ChairGun

The modern, maintained successor to the classic ChairGun, with real pellet drag.

Calculators

What a good ballistics calculator does — and how PelletArc does it.

Calculator

Airgun ballistics calculator

Pellet, slug and .22LR trajectories with purpose-built airgun drag laws.

Calculator

.22LR ballistics calculator

Rimfire drop and holdover with the RA4 model and BC truing for your ammo.

Learn

The physics behind the answer — in plain language.

Guide

What is BC truing?

Calibrate your ballistic coefficient from the drops you actually see downrange.

Guide

Pellet ballistic coefficient

Why a single rifle BC misfits a diabolo pellet — and what to do instead.

Guide

Mil vs MOA

Which angular unit to use for airgun and rimfire holdover, and why.

Get PelletArc

Put the guides into practice.

iOS & Android · one-time purchase · works fully offline.

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Launching on iOS & Android. Pay once — no subscription.