The science
Most ballistics tools hand you a number and hope you don't ask how. These pages explain the physics and the statistics honestly — the methods, the assumptions, and where the model stops being trustworthy. No proprietary constants, just the ideas.
Two engines: predict, then referee
Why interior and exterior ballistics are different problems, and why prediction and statistics are kept strictly apart — one predicts, one referees.
Read →From charge to velocity and pressure
What happens inside the barrel: powder burns, pressure builds, the bullet accelerates — the model class, and why pressure is only ever %SAAMI.
Read →What a ballistic coefficient really is
Drag versus speed, the G1 and G7 reference projectiles, how a BC scales your bullet onto a standard shape, and what a custom drag curve buys.
Read →How a bullet actually flies
The point-mass trajectory — gravity plus drag over time — and the corrections layered on: stability, spin drift, aerodynamic jump, Coriolis, and truing.
Read →Honest statistics for small samples
Why a 5-shot SD is a guess dressed as a number — confidence intervals, extreme spread, comparing loads, drift, and the creed: measured beats fitted.
Read →