Ammunition Macros

Is there a way with the new SRD sheets for 5e to create a macro that tracks ammunition after i make an attack. for example: a macro so that i make a ranged attack using my pistol, it then subtracts 1 of my bullets and 1 of my designated class resources (we use gunpowder and DM has determined that a Gunpowder Horn holds enough for like 100-150 shots or something for use with his Pistol). idk if there's any macro or script or something to perform such an idea?

This can't be done with a macro, but it can be done with an API script.  There are a few that would work. Ammo is one that I wrote a while back, and Honey Badger has and Attrib script floating about that can also work.  API scripts require the Creator of the Game to be a Pro subscriber.

i am a pro subscriber, is there a link perhaps to the particular thread with the API script?

In the case of API scripts, it only matters if the person that created the game is a subscriber. &nbsp;Here is my ammo script: &nbsp; <a href="https://app.roll20.net/forum/post/1034829/script-a" rel="nofollow">https://app.roll20.net/forum/post/1034829/script-a</a>... I don't know where the original Attrib script is on the forum but here is a gist of a modified version:&nbsp;<a href="https://gist.github.com/shdwjk/a742b1c89a8074372a2c" rel="nofollow">https://gist.github.com/shdwjk/a742b1c89a8074372a2c</a>