I am running a campaign where my characters need to destroy a roughly cylindrical stone, about a foot in diameter and a couple feet tall, with a hardness of 7 and 28HP (14 before it is broken). Hardness seems to act like resistance in general, but I would have thought that stone would have even greater resistance to slashing or piercing damage, than to bludgeoning damage. Is there any support for this in the rules, or has anyone just done it anyway?
You could give it some slashing/piercing resistance. But I’d argue that is too much. Hardness 7 will make destroying the thing already pretty difficult. And unless this happens during a combat encounter/ some kind of time crunch, it really doesn’t matter at all. It will just take longer. I wouldn’t even let the players make the rolls, just decide it takes X minutes and move on.
@ParanoidAndroid I might do the reverse, and reduce the Hardness by a point or two for bludgeoning damage. Normally it wouldn’t matter, as you say, but there will be a time factor involved. Thanks!