The old Heym Mausers sold by Montgomery Wards used intermediate Yugo (Zastava) actions and were offered in .270 and .30-06.
If you are adept at making Mausers feed, have at it, otherwise, stick to a Xx57 based case on those actions. The 6.5x55 typically feeds easily as well. The last Yugo I built was a .376 Steyr.
Did they lengthen the internal length of the box ?
