Any rate, in reading some give the 5,6X61mm to have a velocity 1130 m/s with some type of Aluminum casing and others give say 3500 ft/s for a 77 grain bullet.

Whilst the 5,6X61R is give a velocity about 200 m/s slower @ 920 m/s, which obtainable or more realistic.


Hochachtungsvoll,

Raimey
rse