Would it be possible to add compatibility with OCs Ammo and Armor so that the ammo casting recipes it adds are moved into this mod's ammo group?

This mod is compatible with all other mods, but here’s what you should know:

The mod uses Factorio’s default item-group and item-subgroup for ammo:

Group: ammo
Subgroup: ammo

This means:
✔ Any new ammo items from other mods will automatically appear in the same category, as long as they correctly use the ammo group.
✔ The mod won’t conflict with others since it relies on Factorio’s standard sorting system.

Recommendation:
If another mod adds custom ammo, ensure it’s assigned to the ammo group—this will keep everything organized together. Otherwise, no extra steps are needed!