In-depth modules on cartridges, maintenance, ballistics, and firearms knowledge — written for shooters, not engineers. The full Field Guide lives in the app; the database is here too.
323 cartridges — ballistics, history, military timelines, and full specs. Searchable, sortable, and comparable. From .22 LR to .50 BMG.
Compare up to 5 loads side-by-side — trajectory arcs, drop tables, wind drift, and recoil index. Adjust zero, wind, and atmospheric conditions in real time. G1 drag model.
320+ propellant powders ranked by burn rate — Ball, Extruded, Disc, and Flake. Filter by brand, type, or application. Find substitutes, compare burn positions, and check temperature sensitivity.
229 propellants on an interactive burn rate spectrum — fastest to slowest. Filter by application (pistol, rifle, shotgun), hover to inspect specs, click to open the full detail page.
33 game animals worldwide — squirrel to elephant. Habitat, estimated population, danger level, hunt frequency, minimum caliber, and the 5 most common cartridges for each. Plus 7 extinct species.
45 landmark weapons — from the flintlock musket to the XM7. Six eras of firearms history, with the context behind each milestone.
85 service weapons across every major military — rifles, pistols, machine guns, and anti-materiel rifles with full service histories and stories.
Every purchase path covered — LGS, online, GunBroker, private party, C&R, and NFA Form 4. Scenario-specific checklists with CRITICAL items flagged. Progress saves automatically.
What to do when firearms go missing or are destroyed. Step-by-step checklists for law enforcement, insurance claims, and the documentation gaps that make bad situations worse.
Maintenance schedules, ballistics tables, reloading reference, and every cartridge — linked to your guns and your range sessions.