Unless you really have to have a lever action, I wouldn't bother. You can make a .270 nice and light - then you have the real deal, not a close approximation. Jack O'Connor wasn't stupid; he didn't have the 7-08 available in his day, but he did have the 7x57, and while he thought the 7x57 was a fine round, he preferred the .270. A nice, light mountain rifle in .270 is hard to beat.
