Attributions
Image credits live on the images. Click the i on any photograph for its author, licence and source page. What follows is everything that has nowhere else to go.
Data sources
- Wikidata
- Identifiers, native-script labels and aliases. Wikidata content is released under CC0.
- US Army Ballistic Research Laboratory
- The G1 and G7 standard drag functions, which are in the public domain. Transcribed from the tables published by JBM Ballistics and cross-checked against an independent implementation.
- SAAMI and C.I.P.
- Cartridge and chamber dimensions and maximum pressures. We transcribe the figures and never republish the drawings.
- US Bureau of Labor Statistics
- Consumer Price Index series, used to adjust historical prices. Baked into the site at authoring time; the published site makes no runtime API call to anyone.
Software
Built with Astro, Svelte and Tailwind CSS. Site search by Pagefind. The ballistics solver is our own; open-source implementations are used as a validation corpus in the test suite rather than as a dependency, and are credited in the fixtures that record their output.