The .30'06 is a wonderful cartridge, but I wouldn't think that anything less than .375 Holland & Holland would be reliable lion medicine.
I don't want 'em coughing with annoyance as they charge me, I want 'em to drop in their tracks.
When Mr. Winchester talks, lions listen! :-D
That's a mighty nice rifle you've got there. I've got my eye on a Rigby 500 NE double at Cabela's for when my wife and I win the lottery.
Right now we're just trying to keep our 9 month old in baby chow and diapers!
Semper Fi