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GunSim

Free Ballistics Software
Online Simulator

Free online ballistics software in your browser. Practice adjusting your scope for different ranges, loads and weather conditions. Mildot rangefinding too.
Desktop Program

The desktop ballistics software has lots more stuff, charts, moving targets. You can use your own graphics, and save your load data. Works on a Mac and PC. And Linux.

Friday's Ballistics for Beginners Useful Fact :

Beaufort Wind Estimation Scale

Beaufort # MPH Description Specification
0 <1> Calm Smoke rises vertically
1 1-3 Light Air Direction of wind shown by smoke drift but not by wind vanes
2 4-7 Light Breeze Wind felt on face; Leaves rustle; Wind vanes moved by wind
3 8-12 Gentle Breeze Leaves and small twigs in constant motion; Wind extends light flag
4 13-18 Moderate Raises dust, loose paper; Small branches moved
5 19-24 Fresh Small trees begin to sway; Crested wavelets form on inland waters
6 25-31 Strong Large branches in motion; Whistling heard in telephone wires; Umbrellas used with difficulty


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