Um, with an ak? i have no idea... dont like to even touch the things. I would assume with the ammo and given that you have adequate marksman skills you SHOULD easily be able to hit the thing... problem is - there will be no more squirrel. What little squirrel scraps you have left over after that 7.62 pops it like a pimple wnt be worth gathering up to eat.
My advice to you is develop a bug out location that you can keep all these rifles and ammo and supplies at when the SHTF. And of course a car to keep it all in until you get there (I suggest a small ford ranger or something of the like with a nice size toolbox to keep most of your supplies in and a backpack or 2 for the rest)
again, just my 2 cents.
"You should see the damage, bronze. Huh? metal damage, brain damage. Heheheh. You listen bronze. I am the Nightrider. I'm a fuel injected suicide machine. I am the rocker, I am the roller, I am the out-of-controller! I'm the Nightrider, baby .... .. .
and we ain't never comin' back!"