this subject has come up on a local site im on and none seems to know the answer (definatively)

what is the standard used for determining if a buck is a typical or nontypical. in other words, some bucks look nontypical cause they are screaming with abnormal points. some other nontypicals you can barely see any abnormal points.

so back to the question. how many "abnormal points" or "abnormal inches are needed in order for a buck to be considered nontypical.

i have googled this to death and can't find anything... help?