I have no experience w/lions as a matter of fact the only one I ever touched was at the AF store in San Fran in 1966. It's head was damn near 2 feet wide and the muzzle larger than a standard mail box, I was/am impressed. I have killed probably 25 black bears most w/an HVA 243 and old style 100gr. Nosler PT's. Anybody who says it isn't enough gun for BB doesn't know how/where to place bullets. I have never felt undergunned with it. Anybody who lets themselves get close enough to a bear to be injured is an IDIOT!. Sorry I grew up on a cattle ranch with much more dangerous critters than black bears on a hour by hour basis. But I will tell you something, wild cats SCARE me, why do you think that Col. Jim Corbett shot them in the head mostly.-Muddy