I've always thought that the malt would be the tough part. Barley isn't that hard to grow, but malting always seemed intimidating. Went to a Virginia distillery that makes there own malt, and found that it's really not all that difficult. I was shocked to see how simply it could be.
Honestly though, in a post SHTF world I'd make that malt into something stronger, and stick with cider or wine for a "common" drink.
As for the ammo, I'll save that. Venison will come by way of arrow, much less likely to attract attention that way.