His gun was a 303 British. Over and over he makes the statement "the lion was hit but wasn't taken". IOW, he wounded a bunch of lions because his gun wasn't up to the task.
The .303 British is essentially a mild .308 Win. If lions are getting away from a single shot from a .303, it’s either because of bullet failure or poor bullet placement. Plenty of moose have been killed up here with the .303, and they are a lot bigger than a lion.
