Particles in container penetrating through wall

[d4rk3lf]

Rather then "volume" in Property Test, try to set it as "surface area". instead of "volume".
Perhaps some of the particles are just several connected polygons without any volume.

Oh.. and it's a good practice to have particle counts displayed in the editor, so you can see how many particles you have in each event... just a little suggestion.
(right click on empty space on editor -> Display -> Display particle counts)