I was talking to a cousin of mine, who is a detective in the city where I work, and his advice was:
"Stock up on .223 ammo."
I told him that I don't have one of those, but I have a .30-30.
"Then, stock up on .30-30 ammo."
I figure about 140 rounds might do it.
You're smoking crack! 140 rounds?
To survive a DUmmie apocalypse you need, at a VERY minimum, 1 self-loading military-type rifle (AR, AK, etc.), 10 30-round magazines, 1,000 rounds of rifle ammo, 1 semi-auto pistol, half dozen mags, 200 rounds of pistol ammo.
These are bare-bones minimum numbers. You must check the DUmmie-saturation in your particular area and modify your equipment accordingly. Also, you must determine your intent. If your plan is to hunker down in one place and protect the family, you may be able to go with the minimum. If you're like me and intend to wait until nightfall, then stalk, ambush, and slaughter the DUmmies like the vermin that they are, you may need more.