Mechanical precision
The rifle-and-ammo cone, set in MOA. This is the true capability of the system before the shooter or conditions touch it.
External ballistics, made visible
A browser-based teaching tool that separates a rifle's mechanical precision from aim wobble, wind, temperature, cant, and reloading consistency — then shows how the group and your odds of a hit change as distance grows.
Real groups blend many sources of error. The tool lets you turn each one on independently so you can see its individual contribution — and how they stack.
The rifle-and-ammo cone, set in MOA. This is the true capability of the system before the shooter or conditions touch it.
Positional aim wander, measured in MOA. Depends heavily on the shooter's position, degree of external support, and individual proficiency.
Full-value crosswind modeled with a standard lag-time method, so drift scales realistically with range, velocity, and BC.
Vertical shift from a departure off a 70°F baseline, illustrating how ambient conditions move your point of impact.
Left or right cant combined with your elevation dialed produces a horizontal error that increases the farther you shoot.
Muzzle velocity, ballistic coefficient, and extreme spread translate ammo consistency into vertical stringing on the target.
A second simulator lives inside the tool: a 7.62×51 NATO M240B model built on the full G7 drag curve, plus a full-screen tactical planner that shows where a burst actually lands and who it reaches.
Traces the M80 147gr round on the measured G7 ballistic coefficient (0.200, Army Ballistic Research Laboratory), so the math holds through the transonic transition near 800 m instead of breaking down at range.
Sustained (100 rpm) and rapid (200 rpm), alongside 7-, 9-, and 13-round bursts, per TC 3-22.240.
Tap a 12.7 m qualification burst and the cone of fire is rebuilt from your measured group instead of a default spread.
Drag the target to change range, turn it to test enfilade versus frontal fire, and watch the classification and the odds update live.
Rising or falling ground changes the beaten zone's length; a crest, wall, or berm models defilade, dead space, and the percent of rounds stopped.
Technical and tank targets sized to public vehicle specifications, recognizable at every simulated range from 500 m to 1,800 m.
Set your own numbers, tap the target to place an unconfirmed zero, or enter your real tapped group with Custom Zero. Nothing you enter leaves your browser.
No. It is a simplified teaching demonstration. Always confirm your real zero with live fire on a safe range; do not use any value here for come-ups, wind holds, or load development.
It lets you tap where your real shots landed on a reference bullseye. That measured group then becomes the basis the simulator runs, with wobble, wind, cant, temperature, and distance still applied on top.
No. Every calculation runs entirely in your browser. There are no accounts, and nothing you enter is transmitted or saved once you close the page. If you accept cookies, Google Analytics records page visits and which features you use (like which buttons and settings you click) so we can improve the app, but it never sees the values you enter or your results.
Yes. Use the compare mode inside the simulator to run two independent setups against the same target and conditions side by side.