# 10.4 × 20 mm R

> revolver cartridge

**Wikidata**: [Q3596788](https://www.wikidata.org/wiki/Q3596788)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/10.4mm_Swiss_Centerfire)  
**Source**: https://4ort.xyz/entity/10-4-20-mm-r