Since a golf-ball would do non-lethal damage (1hp?) normally, I'd have no trouble making that 0 after DR.
I agree a flat 1hp damage rule is problematic. Something like 1hp per 5 full hp of pre-DR damage would be better.
Re the barbarian DR, presumably following regular d20 rules it doesn't stack with other DR. I don't think it can logically be finessable, either - actually, frankly barbarian DR never made any sense to me in 3e, it's taking the concept of 'hardness' a little too far IMO...
edit: I see on King Conan's stats they have his barbarian DR stack with his regular armour DR... so presumably it's finessable, crushable etc as per normal Conan rules.
I agree a flat 1hp damage rule is problematic. Something like 1hp per 5 full hp of pre-DR damage would be better.
Re the barbarian DR, presumably following regular d20 rules it doesn't stack with other DR. I don't think it can logically be finessable, either - actually, frankly barbarian DR never made any sense to me in 3e, it's taking the concept of 'hardness' a little too far IMO...
edit: I see on King Conan's stats they have his barbarian DR stack with his regular armour DR... so presumably it's finessable, crushable etc as per normal Conan rules.