Just to point out some facts. Across northern Canada, a tremendous amout of game was shot in the depression years, pretty well ending at the end of WW2. Moose was the predominate game animal and the 30-30 was the predominate calibre, with virtually all being the Winchester 94. People talk about going into any crossroads store and being able to buy 30-30 ammunition.
The same was true of the rifles. Trading posts in the north would only have 94 30-30s and likely nothing else. The federal government sent 30-30 ammunition to the northern posts and it was distributed to the Natives by the RCMP.
In the boondock area on the fringe of northern settlement in SAskatchewan that I know about, the little general stores carried big game rifles. You could get exactly what you wanted, provided it was a Winchester 94 in 30-30 calibre that you wanted! Bush homesteaders and trappers shot game year around to provide themselves with meat. There were probably more 30-30 calibre rifles than all other calibres combined.
There were probably more 303 Savage around than there were 303 British, because the great numbers of Lee Enfields that flooded the country didn't come until several years after WW2, when hunting had reverted to organized with enforced hunting rules. Thus, the 303 British missed out on the great era of survival hunting.