What Caliber for Armadillo?

Texas man shoots armadillo, gets hit in face by bullet ricochet

Bullets bouncing off of armadillos happens more frequently than I would have thought. Cruise the web a little and you can come up with headlines like:

Man Shoots Armadillo, Bullet Hits Mother-In-Law
(That's what he told the police anyways)

Seems that the ricochets that I saw involved a 38 revolver and 9mm pistol. It is obvious that a larger caliber is required. I would bet that a 44 mag would take care of the critter and that it would also ruin your meal of leprosy on the half shell!

But just in case you are undeterred by the animal hosting leprosy, I have some untested recipes.
ARMADILLO 'N RICE
BAKED OR BARBECUED ARMADILLO
ARMADILLO IN MUSTARD SAUCE
ARMADILLO WITH SKUNK STIR FRY

Just kidding, I made the last one up although I do have another untested recipe for Steamed Skunk. 
Bon Appetit!