RE: Magnum haters?
I'm not a magnum hater either, it's just that many people buy them only to impress their buddies. Many I see bring them to my small range can't shoot them worth a damn, but can do quiet well with a 243 or 308 class gun.
Then comes the price of ammo and reloading components, at over $20 per lb for powder it takes about twice as much to load a single 300 ultra as it does for a round of 308 win. Here in Alabama the 300 ultra has no real advantage either.
In an area where larger game and 400 yd shots are common the large magnums have a realistic place but only if the rifle shooter can handle them well. A lung shot deer will die much quicker than a gut shot one will even if it's a fifty BMG round that hits the gut.