Question about alchemist bombs and DR or immunities

[Imperium]

Hello all, GMing a game coming up where there is a mob that has both dr5/ and immunity: magic. Having a rough time where alchemist bombs lie in relationship to this monsters defenses.

[hogarth]

Fire damage is unaffected by DR.

By magic immunity, do you mean like a golem has? In that case, it doesn't affect an alchemist's bomb either (since it's like "super spell resistance" and (Su) abilities bypass spell resistance).

By the way, I die a little inside whenever I hear a monster called a "mob". ;-)

[MinstrelintheGallery]

The only worry is restance- which is more common than DR and SR. Force Bombs Ahoy!