Calculators

Part of the geladen.ch ballistics suite. Successor to the standalone TARAN tool. 1. What this tool is for Every shooter has a number they quote for their rifle. It is almost always wrong, and it is almost always wrong in the same direction: too optimistic. The reason is not dishonesty, it is arithmetic. The traditional […]

The first post ever published on this site said, in its entirety: Migration is in progress. That was a while ago. The migration is over. Here is what came out of it. → https://bc.geladen.ch geladen.ch ballistics — a client-side suite for small-arms external ballistics. Trajectory, hit probability, drag curves, your rifles and your bullets, a […]

A report on replacing a closed-form empirical spin drift formula with a physics-based model, and what happened when the result was checked against an independent, modern measurement source. Disclaimers Disclaimer 1 I am no ballistician. I am no mathematician. I am no physicist. I got my diploma 30 years ago, and my brain has not […]

Everything listed here is free and open source software. Enjoy. It all moved: geladen.ch ballistics → https://bc.geladen.ch Everything on this page now lives in one app. Trajectory gives you drop, windage, velocity and time of flight at any distance, with a full 4DOF Modified Point Mass engine underneath when you ask for it. Hit Probability […]

For those who care, this is tabbed data for Trasol solver app review. ScenarL .224 69gr, V0 830 m/s, BC G7 0.171 Dist, m Mach Doppler Trasol JBM+G7 200 1.938 0.6 0.6 0.6 300 1.712 1.5 1.5 1.5 400 1.499 2.8 2.7 2.7 500 1.299 4.3 4.3 4.2 600 1.112 6.2 6.1 6 700 0.96 8.5 […]

Motivations, intentions and disclaimers (brace for impact) This review has been written as a follow-up to this heated and particularly entertaining thread at Sniper’s Hide forums (UPD 2020: since that time, Sniper’s Hide moved back from scout.com to the original domain. As a result, all those moments will be lost in time, like tears in rain. But […]

Latest version (get this one): 2016-01-12 v.1.1 (yojeg1)https://bc.geladen.ch/taran/download/taran-1.1.zip Version history (for information only, not needed to run the app):https://bc.geladen.ch/taran/VERSION-HISTORY.txt Old versions (don’t use them): 2015-06-02 v.1.0 (yojeg)https://bc.geladen.ch/taran/download/taran-1.0.zip 2015-02-10 v.0.6b (povidlo6)https://bc.geladen.ch/taran/download/taran-0.6b.zip 2015-01-23 v.0.5b (povidlo5)https://bc.geladen.ch/taran/download/taran-0.5b.zip 2015-01-20 v.0.4b (povidlo4)https://bc.geladen.ch/taran/download/taran-0.4b.zip 2015-01-19 v.0.3b (povidlo3)https://bc.geladen.ch/taran/download/taran-0.3b.zip 2015-01-16 v.0.2b (povidlo2)https://bc.geladen.ch/taran/download/taran-0.2b.zip 2015-01-15 v.0.1b (povidlo)https://bc.geladen.ch/taran/download/taran-0.1b.zip

Original publication date: 2015-01-21 Introduction How often we see Internet snipers posting 5 shot groups to “prove” precision of their rifles, and other Internet snipers drawing thoughtful conclusions on that basis? I have seen too many; anyone of us who has shot more than one 5 (or 3 or 10) shot group in his life […]