[ o]rders, [ F]orbid.
Forbid used ammunition: Optional, not such a necessity now that dwarves carry multiple stacks of ammo. As with all forbid orders, useful for stopping stuff from being stockpiled at inconvenient times.
Forbid your dead: Optional since dwarves fall out of their clothes upon death.
Forbid your death items: I keep this on. Besides the sock-claiming, I don't need a pickup spiral because dead dwarf A had better chainmail than dwarf B, whose mail is now being shucked off for dwarf C to claim, and so on.
Forbid other non-hunted dead: Border patrols in the last month of the season hoover up a lot of the local wildlife. Unless you have enough soldiers to form a ring of fire, the dwarf that comes to collect the corpse might be the one to discover the ambush.
Forbid other death items: This stays on.
I keep everything forbidden until I want it claimed, at which point I pause the game and then claim/dump everything in the same stroke. Because of the border patrol, nothing gets through, and so after the zerg rush of ambush announcements and subsequent slaughter it's safe for civilians to stream out.
All clothing made in the fortress is purely armour, with the possible exception of cloaks. Those wear, but I've never seen any dwarf claim one of the spares. To deal with clothing that's already claimed, or taken off to make room for a uniform, give your dwarves a cabinet or two in their bedroom. It won't go away, but you don't have to look at it or think about it any more.