[Nox]

The "Tarrif" site only lists smoke ammo stats if the author of that site has them available. So it doesn't meant that they did not have smoke ammo.

I really dont think that limiting smoke ammo to sertain smaller calibres of guns is a good idea. You would need to research every nation and what kind of ammo did they use because there really is nothing to say a 150mm gun could not have smoke ammo. Also what about scenarios or campaigns and how they might be affected by a change like this? IIRC all versions of Steel Panthers have had some smoke ammo for the larger guns too.