Type Rifle Case type Rimmed Neck diameter .379 in (9.6 mm) | Bullet diameter 5.56 mm (.224") | |
The 5.6×57mmR cartridge was created by Rheinisch-Westfälische Sprengstoffwerke (RWS) in Germany for hunting small deer. There are no dimensional or ballistic differences between the 5.6×57mmR round and the 5.6×57mm round (q.v.) other than that the former is rimmed.
Ballistics
References
5.6×57mmR Wikipedia(Text) CC BY-SA