I everyone this is my first post on the forum.

I am wondering how to handle jamming grenades and quality. Grenades I get, But how about when you put one in a launcher? Is it the launcher that determines if it jams/explodes ie. best quality or is it the grenade?

The problem arises if you use the very effective and deadly extreamly rare grenades like the filament grenade. Can you get a non-jamming grenade if you use it in at bestquality grenadelauncher (that is relativly cheeper than getting the bestquality grenade it self)

I assume that there are more rogue traders "out there" who ses this loophole.

Remember that grenades for launchers are not hand grenades. They require a launcher to function. So if you have a best quality grenade launcher it is not going to have jamming issues. You do still have the scatter to deal with if you miss your shot.

In my DH game we have handled them as the same cost but availability was rarer for launcher ammo.