The Europeans on AccurateReloading give them a great a wrap up and especially for "out of the box" accuracy.

As to CRF, you will find just about all the postings on nAR about feeding problems are CRF. A CRF has to be better to work.

Is the Sauer a vertical stack centre line feed magazine, as opposed to staggered feed, if it is then that is the most reliable system for getting ammo from magazine to chamber and doubly so if if very blunt bullets are used in bigger bores.

Mike