Most of the people who attended the public safety sessions were NOT firearm experts, and probably couldn't have hit the broad side of a barn if on the inside shooting out...
Why does this myth persist?
At common indoor ranges, the spread of a shotgun isn't very large at all. A few inches at most. It requires as much aim as a rifle or handgun to employ.
The strength of the shotgun is the amount of energy delivered to the target, the relatively large wound created, and the variety of ammunition available. With one weapon, you can have a slug gun useful out to short-rifle ranges for big-country defense and hunting, buckshot for intermediate range, and birdshot for minimizing overpenetration. The disadvantage is the very small magazine size, limited rate of fire (for pump-actions, in normal operation), and propensity for stoppages. On that last count, a pump-action is very easy to short-stroke under pressure--3-gunners do it all the time, despite extensive practice--while semiautomatics, while more reliable than ever, can be ammunition-sensitive. Although if I were choosing a shotgun today, it would undoubtedly be a semiauto.
Racking a pump action as a form of intimidation is a
terrible idea. It forewarns your attacker(s), alerts them to your location, destroys your tactical advantage of surprise, and requires you to either fumble your limited ammo or sit around with a weapon not at the ready. Think about it--if you've already retreated your family members as far as possible, which normally means bedrooms, and the Bad Guys are still coming, it's pretty clear that they're not just there to steal your cookie jar money. Very apparently, they're not afraid of contact with their intended victims, which places them in a very special class of predator. You're in a life-or-death fight with these people. Act accordingly.
brasky said:
#6 shot may hurt like hell but I would never trust it to down a suspect immediately, especially if the suspect is wearing heavy clothing. I've shot turkeys from 20 yards with high brass, #4 shot turkey loads who after being shot ran off. I would not trust the #6 shot with my life.
Birdshot is recommended for homes where the largest wall-to-wall distance is in the vicinity of 20-35 feet, or about 1/3rd of your anecdotal distance. At the ranges you discuss, buckshot is the clear choice for self-defense.
That said, you are correct in taking into account what your attacker will likely be wearing in your SD arithmetic.
Would I use a birdshot load in winters around here? It's well under 20 at the moment. Today, I went out expecting to be outside for an hour or two, and wore a longsleeve t-shirt, cotton pullover, fleece vest, light down vest, and down coat. Overdressed for the weather, but I usually wear enough to stay warm in the event of an emergency, car trouble, etc. In deep winter, I would expect any burglar or ne'er-do-well to be at least as well-padded.
I dunno. I haven't studied birdshot ballistics that much, because my choice for home defense would be either my .45 ACP 1911, or my .44 Magnum 629 loaded with hot .44 Spl ammo. I already know I can't be motivated to use a shotgun enough to be proficient with it, but I shoot the 1911 and 629 a whole hell of a lot. Nothing against my .38--I wouldn't want to get hit with it--but I can fire the 629 with my chosen load as quickly and as accurately.