I have to agree that inside the home, #6 or #4 birdshot will be devastating against someone at 5-10 meters (7-10 yards) and it reduces the penetration though walls - yours or the neighbors!
Outside the home #4 buckshot seems to do a marvelous job on "critters" that walk instead of fly. Keeping your shotgun loaded with one barrel of #6 (or #4) and the other with #4 buckshot will probably mean you've covered 98% of cases.
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BillCA in CA (Unfortunately)
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