Revolvers,single or double shotguns and singleshot guns not leaving empty cases.
Unsure if resolved on newer versions but im not at home now to install a newer experimental.
These Weapons will give you the Hulls/Casings when you reload them, not sooner. The empty Hulls and Casings will show up in your inventory rather than on the ground. Also, don’t forget that Ammo like the 8x40 Caseless won’t give you any casings because it doesnt have any.
There was a bug which caused the guns to eat the cartridges but it has been fixed.