RE: Mini 30 with Wolf 7.62x39
The mini 30 is chambered for 7.62x39, and should say it right on the barrel. The conversion from metric to standard is somewhat shaded becuase in the US the 30 cal is considered to be .308. Shoot what the gun is chambered for. The manual is probably referring to ammunition manufacturers outside the US are not required to meet SAAMI specs. A quick check of the Ruger website confirms that it's chambered for the 7.62x39.