When using the “Create Alchemical Item” menu in the character Sheets “Alchemy” section, the list does not allow crafting elemental ammunition, even if it is in the formula book. Basic ammunition types like Firearm Rounds are missing as well.
Several other ammunition types, like Aromatic Ammunition or Blister Ammunition can be crafted without issue, but not in the correct amounts described by the munitions crafter feat (1 instead of 4).