The connected firearms reference

571 Cartridges.240 Powders.37,024 Factory Loads.

One searchable system for firearms, ammunition, and ballistics — where every cartridge connects to its loads, suitable powders, and the rifles chambered for it.

57,550Firearm models
4,974Optics
7,535Ranges & clubs
17,573Retailers & FFLs
571Cartridges

Sourced from SAAMI, CIP, manufacturer specifications, and the ATF FFL registry.

Core tools

Firearms tools, built on real data.

Five tools on one dataset — reference libraries, a G1 ballistics engine, and a live match map. Built for looking things up fast, then going deeper.

What makes it different

Wikipedia tells you what a cartridge is.
This connects what it does.

How it works

Connected answers, not dead-end articles.

A search for .308 shouldn't stop at a description. It should lead to loads, ballistics, powders, compatible rifles, reloading data, and prices. Every page here connects to the others.

That's the difference between a reference site and a reference tool.

The private side

Lindcott Armory Vault

The private app for your own firearms records — guns, ammo, optics, range sessions, and maintenance logs, kept separate from the public reference.

  • Offline-first. Your data doesn't need a connection.
  • No public collection display. No social feed around ownership.
  • AI assistant with full vault context; maintenance alerts from round counts.
  • Private by design. No ads, no data selling.

Building next

The tools gun people actually search for.

Each one runs on the same dataset — one reference, more ways in.

Reloading Reference

Cartridge + bullet weight + powder → sourced min/max charge tables, attributed to published manuals. The question people search thousands of times a month with nowhere good to land.

State Law Matrix

Suppressors, NFA items, carry permits, magazine limits, constitutional carry, castle doctrine. 50 states, sourced, with correction submissions.

Ammo Price Tracker

Live shipped cost-per-round for common calibers, historical percentile context, and alerts when a cartridge drops below your threshold.

“Can I Use This For?”

Plain-English answers to what people actually type: Can I run 5.56 in a .223 chamber? Can I hunt deer with .223 in Pennsylvania? Short answer, then the depth.

Dealer Platform

Clean, filterable catalog sites for gun dealers. Caliber and ammo filtering that works because it runs on Lindcott reference data.