Although I am quite happy with my current .357 defensive load (Corbon 110g JHP) I spend the majority of my workday bored so I have been researching other possibilities. One thing I really like about the the Corbon 110g is that more then any other .357 round I have tried it seems like it recoils more like a .45 (a push back) as opposed to .40 or .357 sig (muzzle flip). Even out of a 2 1/2 inch barrel the velocity is impressive and when fires it has a very satisfying throaty boom. During the course of my research I have found that a very popular round for use in short barrel .357's is a 158g SWCHP 38 special +P. I keep reading that the "The blast from a .357 is so over whelming that it will disorient the shooter almost as much as the person on the reviving end when being fired in a enclosed space" so some choose to downgrade to the 38 special +p loading.
The thing I find strange about this is that the 12 gauge shot gun (by many peoples standard) is one of the most recommended home defense weapons in history. This got me wondering if a 12 gauge shot gun blast was actually less intense then a .357 blast as no one ever seemed to mention the buck and roar of a 12 gauge. This lead me to do a bit of searching and come to find out that a .357 mag and 12 gauge shotgun are both around 160 DB. More interesting is that all service caliber hand guns seem to fall between 150-162 DB's making them more or less equally damaging. I couldn't light/flash data on the 2 but it makes sense that the .357 isn't going to be any more intense then the 12g. The only thing I could think of is that the blast of a 12 gauge is going of 10-14 inches farther away from the shooter then a .357 (because of barrel lengths/size of the weapon) but that doesn't seem like it would make THAT much of a difference. So, why does the .357 have the reputation of a hand held 5 shot flash bang?