Here's an anecdote about a moose kill from an old French-Canadien, bush pilot, trapper friend of mine in Yukon, Terr. Canada. I never found out if he was telling the truth or lying, but I have no reason to disbelieve him.
He was sitting over a hole in the ice waiting for beavers to come out so he could shoot them with his .22 rifle. About 10 feet to his left side a cow moose came out of the woods, chewing her freshly ripped willow branches. She stopped along the edge of the river ice, where he took the opportunity to shoot her behind her shoulder with the "beaver gun". He proceeded to show the rest of the story with his mustached mouth, mimicking her chew her willow branches for a moment, stopped chewing, stood a little longer, and then fell down dead.
There's also the story of Bella Twin
https://www.ammoland.com/2014/11/wh...n-use-to-kill-a-world-record-grizzly-in-1953/