The 1950s-60s were a golden age for sporterizing military rifles. Hunting was very popular, the old lever guns were done and commercial sporting rifles were quite expensive ($150 for a Model 70 Win vs $18 for a Lee-Enfield).
It was a matter of necessity and economics, and it became very popular. I sporterized an as new No5 JC which I bought for $18 in 1962. Then it was a M1903 Springfield and a M98 Mauser in 7x57. All were scoped with sporter stocks and they did a lot of freezer filling over the years. I've owned a lot of sporting rifles, but still like these three guns; reliable, accurate enough and hard hitting with well proven military rounds at sensible hunting ranges.
Would I sporterize one today? No way based on the comparative costs. That said, I have a D&T M1903 receiver on hand which I'm going to build as a sporter for a project this winter. No fear of profaning a nice collectible MILSURP there. I have an already shortened military barrel to install. I just wish the commercially made trigger guards with hinged floorplates were still available.