25-20 SINGLE SHOT

The 25-20 Single Shot (aka 25-20 SS or 6.5x41R; not to be confused with 25-20 Winchester) was designed by Boston inventor J. Franis Rabbeth during the late 19th century. The original cartridge had an ~87 grain projectile, although 60 to 91 grain bullets are also practical. Extremely hard to find this one! You can handload it if you have the rare brass; despite being a different cartridge, 25-20 WCF data is applicable.