The problem with the Win mag is that there is a long history of under performing factory ammo. While it is good when hand loaded with certain powders not all countries, especially in Africa, have easy access to these powders. The .458 win will do the job but it is hard to see a downside for the Lott or Ackley versions since they simply add more versatility in ammo and reloading options.
I had a new FN made Winchester 70 in 375 which was too heavy for a 375 in my opinion so I sold it. However I think the same gun in .458 would be great to convert to a Lott. Very smooth feeding. In fact I was going to do just that until I stumbled onto a .450 Rigby and ended up with that instead.
I had a new FN made Winchester 70 in 375 which was too heavy for a 375 in my opinion so I sold it. However I think the same gun in .458 would be great to convert to a Lott. Very smooth feeding. In fact I was going to do just that until I stumbled onto a .450 Rigby and ended up with that instead.