Shock comes in many forms..
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Medically speaking, acc Websters, I'm sure that is the right meaning of shock, but it has many applications..
Such as, one can go into shock, by witnessing an event (bad event) which basically puts one into shock, the inability to act, so to speak, or tweak ones thinking capability's, to lose thought (processing) or one can go into shock and not feel pain and continue lifting, running, etc., with a broken bone.
I think the shock value of a 380 cal could be like comparing getting hit in the chest with Bee Bee, as compared to say, a 45 cal, like getting hit in the chest with a frying pan..
Both could, cause shock, but I think the frying pan, being bigger, with more Punch, due to weight, may just knock the wind out of someone, or knock them down, putting them out of the fight for the shooters advantage, in taking another shot, or getting out of Dodge..
I think we all agree that shot placement wins the day for the ultimate shock value, but given the same shot hitting a non-killing zone, I'd bet the 45, 44 357, 40cal, and not necessarily in that order, would have more shock value than a 380 IMHO, be the receiving end on super drugs, or none at all.
There are advantages with speed/velocity, but weight is what carry's the day over less weight with more velocity, as a lighter object is gonna slow down faster up against the same wall/impact area than a much heavier object, that takes more time to stop, even though it's going a little slower, due to its own inertia (its own mass/weight).
But like you, I would not want to stand in front of either a 22 cal, or a 40cal, etc., because either one, if it hits, it's gonna have a shock value within your own mind, feeling the sting, punch, pain, etc., that one knows, he's been hit.
And I don't take enough drugs of any kind, to dull that factor, personally..lol
LS
PS.. You see this weight-effect everyday with SUV's going slow but doing so much damage to the cars they hit, as opposed to the same speed, or faster, of a light car hitting another car, and far less damage, both for the car being hit and the occupants inside (as another example, in general).