To expand:
(mostly this is full on SHTF stuff)
If you own firearms:
1) 2000 rounds per caliber owned. (minimum)
2) Military 50 cal cans or larger. The 50 cal cans will hold 840 rounds of 5.56 each (about). I've gotten 1000 in a can with careful packing. The 30MM cans (double height 50 cal) will hold about 1000 rounds of .308. Figure on 3 per caliber to start.
3) Reloading press (single stage or progressive)
4) Dies for each caliber owned
5) Brass
6) Powder & primers
7) Bullets (the ones that go into the brass cases, not the loaded ammo)
8) Dessicant pack
9) Common repair parts (firing pins, magazines, etc)
10) Good quality lube and cleaners (including patches and cloths)
I could add equipment to cast bullets (lead, furnace, molds, flux, etc) but that is up to the individual. Lead bullets don't go bad, they can be bought in bulk (500 count boxes) and you can store them in the basement. Powder and primers are the big issue, cool and dry is the watchword here. The basement is the best place, but not everyone's basement is 100% dry. If you do not desire to reload, cultivate a friendship with someone who does and who you trust. In a full-on emergency, trust is going to be hard to come by.
I'd maintain a stock of precious metals (besides lead and brass). Silver is probably your best bet, possibly copper. Gold is good, but the difficulty there is ease of exchange.
For archery enthusiasts, I'd presume you would need replacement parts (bow strings, cables, springs, rollers, etc) for your preferred bow or crossbow. Extra arrows/quarrels/bolts, tips and things like that. How many of each, I'm not sure. Archery projectiles are usually more easily recovered than bullets, but probably not in all cases.
