I read a statement that said one can merely rechamber a .458 Winchester to .458 Lott.

I know you can for a single shot gun or double gun...but is there magazine room in a bolt action?

The .458 lott is a blown out .375 H&H and it' s .350 longer than a .458 Winchester.

I don' t doubt the statement that one can still shoot the .458 Win ammo in the .458 Lott chamber, but I doubt there' s room in the magazine to hold the longer Ammo.