300 Win Mag is tough to whoop.
If starting over, I think I'd consider the PRC over the win mag, or go right to the 300WBY and be done with it..
Yup, all pretty much the same deal.. I went RUM but any of the others would work just as well for me.
I rotate between a 300 Wby and a 300 RUM. Ballistics are a frog hair difference, but each rifle is set up differently depending on my hunt.
I used a 30-378 Roy for several years exclusively for bull hunting. It was impressive with both Barnes TSX and Nosler Abond in 180g.
😎