Shamelessly stolen from Breda for your zombie killing pleasure:
Lucky for me, I have two rifles with ammo immediately to my left and right in the line of that finger. I think the Marlin 336 would be a great zombie slayer and that is one of those rifles. There is also some other great stuff, in line with the finger, to help me survive a raving zombie horde such as a Camel-back backpack containing what amounts to a decent survival kit.
All the best,