I think this is one people worry way too much about. We had black bears around where I grew up. But I have yet to know anyones children get hurt. Just an opinion. I think there is a total of 17 attacks from Black bears in the Eastern US from 1972 to 2002. I think your chances are pretty safe.

But 30-06 will definately do the job. Thats for sure. 38special's and ar's might be a tad small for the "attacking charging bear".