I've read and heard from several sources that #4 buckshot is the best balance of stopping power / wall penetration for home defense.
Is that still available in California?
But, banning any load is reason enough to hate California.
“...#4 buckshot is the best balance of stopping power / wall penetration for home defense.”
Several years ago I read an article by Massad Ayoob advocating #1 buckshot for home defense - 12 x .30 cal. pellets. 00 buckshot is usually 9 x .36 cal. pellets and - while devastating - it does tend to overpenetrate if all pellets do not impact intended bad guy.