odd, did u check if it has something too do with the new magazine system? im not a modder, but i know a bit of the terms, does it have too be like, defined, the ammo type, somewhere? maybe compare ur new ammo too other ingame ammos. oh and i love ur mod. this is a bit off topic, but have u thought of adding in hopper-fed weapons, like full auto LMGs with a internal mag that have each bullet loaded 1 by one instead of a full clip, and they dont use seperate magazines like AK-47s ingame. i made a suggestion of it with some examples on the github, link: https://github.com/CleverRaven/Cataclysm-DDA/issues/16589
