Particles in container penetrating through wall

[JuhaHo]

Thanks,

Also, I'm still confused with the container wall particle penetration. The wall collision are working OK - the particles are not flying through. However they do penetrate in a way, they are occasionally flashing outside of the container. Is there a parameter, I can adjust to make the particle collision radius bigger. Now they seem to be colliding according to the center of gravity. On certain angles, the particles are visible outside the container.

Here's the setup for the Cache export.