These days a lot of people are quite disdainful of MILSURP rifles and their cartridges for hunting, having fallen victim to all of the marketing hype about this or that rifle and the latest whatchamacallit magnum cartridge. There was a huge amount of R&D devoted to perfecting these rifles and their ctgs over 100 yrs ago. Rifles like the various Mausers, Lee-Enfield, M1903 Springfield, and Mosin Nagant have stood the test of time under the harshest possible conditions and have proven themselves to be reliable and effective killers.
I remember hunting with a couple of guys who were shooting custom 7mm STW rifles shooting 140gr Nosler BT bullets at a MV of 3500fps using 75gr of powder. I was using a 7x57 Mauser shooting the same bullet at a more sedate 2800fps using only 50 gr of powder and they were pretty amazed that my deer fell over as quickly as theirs, and with a lot less meat damage. You really don't need to look much farther than some of the well proven MILSURP rounds like the 6.5 Swede, 7x57, .308 Win, .30-06, .303 or 8x57 for a good hunting round. I guess that's what led a lot of our dads and grandpas to go ahead and sporterize them in the first place.