You'll get a lot of variation on this one. I would say that something that is just coated on, such as poison, does not get reproduced. But something that is melted onto the ammunition, such as a weapon blanch, does.
Neither. Even weapon blanch isn't really part of the ammunition; it rubs off after the first use, after all. But it wouldn't matter to me if a GM decided to let it work.
Well, a person is using the spell to endlessly shoot arrows coated with drow poison. So I was just wondering if the bloody thing gets reproduced along with the new arrows.
If the ammo doesn't come that way by default, no.
But that whole list, from Bleeding to Whistling? S'all good.
Special Note: Don't forget you can toss a weapon buff onto the pouch while the spell is up to affect everything coming out of there for the duration of abundant ammunition