Peaceful. Precise. Armed.
What “truing” usually does, why it so often makes things worse, and how the Truing Session in my app tries to do it honestly. Spoiler: mostly by refusing to give you answers it doesn’t have. TL;DR (for the attention-challenged) Gauss-Newton Goes to the Range It all started with yet another comrade at the range who […]
Does the BC on the box match what the bullet’s own drag data says? Mostly. Some manufacturers more than others. And there’s a free gift for Hornady shooters at the end. TL;DR (for the attention-challenged) The last post ended on a mildly reassuring note: published G7 BCs and my own numbers agree within 1.4–1.9% on […]
How far can you trust one number, where do you take it from, and is there anything better than G7? I’ve had measured Cd-Mach curves for 183 modern match bullets (Lapua, Hornady, Berger) lying around for a while, which is finally enough data to go after the questions at the heart of modern youth’s preoccupations. […]
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 […]
The v = v + 0.1 of the “BC from Labradar tracks” calculator is here: https://bc.geladen.ch/labrabaco/labrabaco.html The major change is noise filtering. Most people who have plotted Labradar tracks in spreadsheet software, must have seen occasional tracks of this shape: The tail of the graph — beyond 60 ms — is obvious noise; there is […]
In the shooting world, the process of mounting a rifle scope is surrounded by an esoteric halo that to me is absolutely inexplicable. Some gunsmiths do not hesitate to charge obscene sums of money for a procedure that essentially lasts 15 minutes, and they multiply and spread legends with the motto “it’s very, very complicated”. […]
Full disclosure: To be clear, I am selling the Vortex and Vectors mentioned in the article. I chose them specifically for their qualities, and this test was to validate the choice before recommending them to others. It all started when I tested the “made in China” Vector Continental 34mm 3-18×50 FFP, and I was very […]
Labrabaco is a tool to calculate G7 BC values from Labradar tracks. Rejoice, citizens! The first official beta is out.