Here.
It's kinda long and dry, but contains a lot of really good info regarding terminal performance of handgun ammo. I will say that the discussion focuses on self defense ammo, and therefore their comments pertain to human targets (and human target analogs like organic ballistic gel), but the long and short of it is that there seems to be a threshold right at 2200 FPS (impact velocity) that must be met in order for the temporary wound cavity to meaningfully become part of the permanent wound cavity. Below that threshold, any damage done by the bullet is limited to tissue through which the bullet physically passes, meaning that penetration and expansion are the key factors in determining the effectiveness of a particular hit; in other words, if the (handgun) bullet doesn't physically touch it/punch through it/whatever, it won't be meaningfully damaged by the shot.
All of that said, as previously mentioned the discussion focuses on human targets/analogs, so what is true on those targets won't necessarily translate to other targets that we might shoot with handguns, like deer or pigs... that 2200 FPS threshold might apply or it might not (I don't know), but IMO for the purpose of matching the tool (handgun/ammo) to the job (target type), penetration and expansion should be the primary considerations, leaving the concepts of hydrostatic shock/temporary wounding on the table for mental masturbation alone.
It's kinda long and dry, but contains a lot of really good info regarding terminal performance of handgun ammo. I will say that the discussion focuses on self defense ammo, and therefore their comments pertain to human targets (and human target analogs like organic ballistic gel), but the long and short of it is that there seems to be a threshold right at 2200 FPS (impact velocity) that must be met in order for the temporary wound cavity to meaningfully become part of the permanent wound cavity. Below that threshold, any damage done by the bullet is limited to tissue through which the bullet physically passes, meaning that penetration and expansion are the key factors in determining the effectiveness of a particular hit; in other words, if the (handgun) bullet doesn't physically touch it/punch through it/whatever, it won't be meaningfully damaged by the shot.
All of that said, as previously mentioned the discussion focuses on human targets/analogs, so what is true on those targets won't necessarily translate to other targets that we might shoot with handguns, like deer or pigs... that 2200 FPS threshold might apply or it might not (I don't know), but IMO for the purpose of matching the tool (handgun/ammo) to the job (target type), penetration and expansion should be the primary considerations, leaving the concepts of hydrostatic shock/temporary wounding on the table for mental masturbation alone.
