.410 Bore
Charming and genuinely hard to shoot well — the thin patterns punish sloppy swings, which is why old-timers call it an expert's gun handed to beginners.
Family
Shotshell
Introduced
1900
Origin
British and American makers, circa 1900
History
The .410 — properly a caliber, not a gauge — settled into its modern form around 1900 as the smallest common shotshell. It's the traditional first shotgun for children and the classic garden-gun and trapper's chambering. Judge-style revolvers and TSS turkey loads have given it two unexpected modern careers.
What it's used for
Iconic platforms
Single-shots from H&R and their heirs, Mossberg 500 .410, skeet tubes and doubles, and the Taurus Judge and S&W Governor revolvers.
Common load types
Birdshot, buckshot (largely for revolver use), slugs, and dense TSS turkey loads.
Reference only — not loading data, not ballistics advice, and KitID links to no ammunition sellers. Know your local law before you buy anything that goes bang.