u/FATA987654321

Hello

I am playing in a campaign and I jumped in as a gunslinger. I took the level 1 feat Munitions Crafter. I am a little bit confused as to how crafting normal mundane ammo works with this. Do I need to have a separate formula for the ammo for every gun? For instance if I use a Harmona Gun and have a Pepperbox as a sidearm, do I need a formula for Harmona Gun ammunition and then a separate formula for Pepperbx ammunition?

And how do "Black Powder Rounds" interact with this? Is that just the only thing I need to make rounds for every gun?

I am new to all of this so please explain like I am 5 with links to rules if possible.

Thank you!