That works well until you are surrounded by the outside of a bear. LOL
Yep we see them daily. This is 75 yards from my back porchIf the OP was a serious question, yes, a .30-06 is more than enough gun to efficiently kill a bear. The issue is that when you are in bear country, you have to learn to live with them. A bear in the yard is an everyday occurrence in my part of the country. As others have said, they are usually not hard to chase off or discourage. Feeding them or allowing them access to food is what causes problems. No food, no bear problem.