How to fix bullet shells being light

In my gun game, when using smaller bullet shells, they get ejected then keep rolling around and acting crazy, and pretty much always land veritically, which is unrealistic, but when using bigger shells, as shown in the pictures, the bullets act more realistic and fall on their side. I’ve thought it might be the weight of the part, so I tried using CustomPhysicalProperties to change the density, which i’ve heard also changes the weight, but it doesnt work. Does anyone know the problem as to why the smaller shells are acting like this, and how can I fix it?

Smaller shells:


Bigger shells:

For the smaller shells, you could try attaching an invisible part to the shells that is longer than the shell itself. Kind of like an invisible hitbox that makes it easier for the shells to fall over.

Good idea, ill try this if I can’t find anything else.