Some say you shouldnt fire 458 winmags very much as it can cause you problems. But in a pinch they will work.
good points to me
1.Bullets can be had reasonable
2.Many different bullets choices
3.Brass is reasonable "hornady"
4.Hornady factory loads can be had reasonable.
5.Several reasonable 458lott starter rifles on market.
6.Reloading dies are reasonable."hornady"

Bad points to some
1.Its a cannon and some cant shoot them well.
2.Its not a Rigby or Jeffery
3.Its becoming "common"

I have a 458 winmag I was going to take out to lott but I took a buffalo and elephant with it the way it is so ill leave her.
I had a ruger #1 in 458lott shot great but I sold it to build a 470capstick to be a little different
dean
Dean