ErikD,
I would not laugh at you shooting a cow or calf moose. Here is a picture of the elk I got this year. Got it with the .375 loaded with the 270 gr Hornady loaded over 67 gr of Varget. It is a calf but it is some mighty fine eating. I think you have picked a winner of a cartridge.

Here is a picture of my buddy's cow shot about a minute before I got mine.