Hey, we have had a problem since day one, our rigidbody items goes bananas sometimes. It doesnt matter what properties I give the collider material.
Here is a video domonstrating the funkyness
We only use primitive colliders
Material exampel
Edit > Project Settings > Physics
Have you been trying increasing resolvers accuracy and playing with other things?
It’s pretty weird, I don’t think such things were ever happening to me before.
I think that the gun goes into the ground too much and that’s causing the rest.
The same would happen if you push a cube into a plane to the half of cube’s size.
You might want to add a simple script to the gun that puts it to sleep for one frame on collision maybe and then let the gravity or other forces do the rest. I know it doesn’t solve the problem, but it could be an option.
You can even turn it into a funny feature and make guns stuck into the ground if their speed is high enough (like a sword). That would also make it easier for players to pick them up.
We use continues detection so it shouldnt pass colliders. hmm… very strange indeed
Oh… Well, damn, it’s even more weird now.