Found this bit of info on another site . I didn't know the dates but it is the way I always understood the story behind the 300,301&317 ultra's. I was under the impression the later 340's were all zastava actions, but I ma be mistaken however I always thought the reason the switch was made to sako was the fn's became unavailable. By the way there was also a mannlicher stocked carbine offered too. If I recall all of the ultra's had very fancy stocke with rollover monte carlo stocks whi;e the 340's had the classic style stock described
1965 � 1972 Mauser type action from Fabrique Nationale in Belgium
1973 � 1977 Sako actions from Finland
1978 � 1983 Mauser type Mark X action by Zaslava in Yugoslavia
The exception to this is the Model 317 and 317P (1968-1974) always used Sako actions."
