Sheepdog Tip of the Day, During Combat tip 99
Bad guys can wear body armor, so shotgun slugs might not hurt them. On the other hand, if you miss the slug will go through several walls and hurt somebody else. Rifles (using standard 5.56mm/.223 AR ammo) are much better - stopped by walls, but go through body armor.
Lt. Col. Dave Grossman, The Bullet Proof Mind seminar (paraphrased)
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