There were a lot of good bullets available in the 1950s. Besides the Canadian made, there were high quality Norma bullets and ammo, widely distributed. There were premium German bullets, one I know was a made by RWS, something like a Nosler, it was highly thought of.
Herters had a ong line of bullets. I have a 1961 catalogue. In the 1961 catalogue their common bullet sold for $3.30 a hundred for 270, 130 grain. In Herters later years they had a store between Seattle and Portland, which I was at the odd time. In the mid 70's I bought their low priced bullets for the 270 and 243 and the price was still 3.30 for the 243, still have a box so marked, and the 270s may have been the same price. These bullets had good accuracy in my rifles and I won some medals with them, shooting to 300 yards.
Heters best bullet was a partition design, the spitting image of Nosler. The 30 calibre 180 grain sold for $6.86 a hundred.