Originally Posted by xsf18cdf
Well not exactly.....aim is equally important with a shotgun. Across a 15' room 00Buck will pattern 3-4". Don't ask me how I know......
That's correct. On a home defense shotgun, assuming an uncooked 18.5" barrel, you can expect a 1-1.5" increase in spread for every yard the shot flies. For an un-choked 18.5" barrel, 15 feet = 5 yards, so roughly a 5" pattern. That's on an UN-CHOKED, or cylindrical short barrel. Easily down to 3-4" with a choke or longer barrel.
Shotguns leave the largest wound channel with the highest margin for error complete with the least potential for over penetration. I would prefer buckshot over birdshot, due to the 12" penetration on ballistic gel you would want to ensure the proper penetration on a human target to hit and disrupt the central nervous system, or CNS. Don't get me wrong, birdshot will hurt like hell, could knock them down, and could kill them as well, but if you add in the multiple layers of clothing one might be wearing, you run in to penetration issues. 40 holes 2" deep after clothing hurts like hell, I bet, but I would rather send 8-12 buckshot rounds at you. Then clothing is much less likely to matter as much, and the effect is similar to getting shot by 8-12 .38 special rounds AT THE SAME TIME IN ALMOST THE SAME PLACE. Plus, you stand a much greater chance of reaching the spine, or CNS, and putting the BG on the ground with your first shot.
I love my AR15, but I have a special mossberg 500 for anyone who steps in my house uninvited with I'll will towards my family. Collapsable stock, 18.5" home defense barrel, sidesaddle shots hell holder, 6 on the weak side of the receiver and 3 more on the weak side of the stock, barrel mounted picatinny tri-rail on the end, fits perfect since the barrel hangs over the magazine tune by about 3", and on it sits a streamlight TLR-1 with a remote coil switch that runs back to the thumb side of the forend, so the light is completely useable without removing my hands from the firing and rechambering actions. Plus a little red laser for point and shoot, just in case. Does it serve any purpose other than home defense? Nope. Am I confident it serves that one purpose as well as it possibly could? You bet your ass.