I have been a Win Mod 70 fan for almost as long as I have been hunting
My first was a push feed 280 Remington and later I bought a 7-08 compact crf
being not very thrilled with either cartridge I turned the 280 rem into a 280 Ackley Improved with a new barrel from Pac-Nor and the 7-08 I stripped that barrel and put on another Pac-Nor barrel chambered in 358 win
I still have both and together they have accounted for numerous game animals
I have always wanted a 375 H&H in a model 70 you should do well with yours