Tonight, we fought some creatures with damage reduction versus any weapons not made of cold iron.
I have a fifth level tengu monk and we couldn't work out, by the rules as written, whether his unarmed strikes would overcome this damage reduction.
Using ki strike, his unarmed strikes are "treated as magic weapons for the purpose of overcoming damage reduction", and we decided at the table that since his BAB was +3 that he could benefit from the "weapons with an enhancement bonus of +3 or greater can ignore some types of damage reduction" clause. However, we couldn't pin down an exact ruling.
I suppose the question is, does the monk's BAB count as an "enhancement bonus of +3" for the purposes of ignoring the cold iron damage reduction?