I know, that this is a small detail, but all basic firearms ammo requires coal, but not shotgun ammo.

It looks weird, that shotgun magicaly makes explosions with just iron and copper.

At this point I think is late to redesign the mod, or take in consideration things like that, sorry.

At this point I think is late to redesign the mod, or take in consideration things like that, sorry.

It's a shame, that i'm late to the party, but at least i get to enjoy the final version.

Anyway the idea is remain coherent with the vanilla:
https://wiki.factorio.com/Shotgun_shells
We have always tried not to upset the game, but modify when from our vision can be improved, in this case, it's something that depend by those who judge it.

In this case the shotgun is very less used, and needed something to be worth, this is one of things that help