if somebody took a canadian .303 receiver and put a .308 barrel on it I wouldnt touch it If it were free!!!!!! kabooooom!!!
Since only No. 4 rifles were manufactured in Canada, and in relatively peaceful conditions (as opposed to the Brits who were being bombed on a regular basis), and those very same No. 4 rifles were converted to .308 by the Brits who held them as a reserve arm for the L1A1s, I don't see where this "kaboom" is coming from.