How to check if something would collide with an object?

Hi there,
I want to check if something would be in the way of a bullet. The bullet has a certain thickness to it and raycast will only check like 1 ray. So it could be that the raycast sees no collision but the bullet would collide with another object due to its thickness.
Does anybody know how to check for the whole thickness of the bullet?

That’s what spherecasting is for. It’s a “fat” raycast.