12.17×42mm RF

12.17×42mm RF/12.17×44mm RF

12.17×42mm RF — Photo: Armémuseum (The Swedish Army Museum) · Public domain · background removed

Key specs

Type: Rimfire
Origin: Sweden
Case type: rimmed
Bullet diameter: 12.62 mm
Case length: 42.00 mm
Overall length: 42.00 mm

Sources

Wikipedia: 12.17×42mm RF, Wikipedia