I think it would be great if you could dismantle Ammunition and break it down into it’s ingredients. Ammunition got much more expensive than in the beginning, and having the opportunity to convert one ammunition type into another would help. Dismantling would come at cost - 10 % of the original resources get lost, as well as your time (consumes time like crafting).
If this works, why not being able to dismantle other items too? It would fit into the survival aspect of the game, and wouldn’t harm the games balance.