You know that song I was country even when country wasn't cool well I was a slug believer even when it wasn't cool.
So now I want to bring an old dead thread and subject back to life in hopes that perhaps some manufacturer in the Airgun Slug world might take note.
There has naturally a lot of talk about the Hydrostatic Effect in Airgun ballistics and even if it exists at such a slow fps compared to that of firearms.
I believe it does exist but at a much smaller scale due to the fact that the projectile isn't producing a pressure wave that a supersonic bullet does.
This being said the question and quest is to create a bullet that at subsonic speeds can through design amplify the Cavitational effect that will produce the same results as Hydrostatic Effect
Perhaps I should first explain my theory as to why these two terms are different even if they share some of the same results.
The Hydrostatic Effect is caused by the pressure wave of the bullet traveling at supersonic speeds this cone of high pressure follows the projectile into the subject creating much of the same trauma that can result from tissue being exposed to extremely high air pressure. The cells in the tissue quite literally explodes. This cone of high pressure is in direct corrallation to the speed of the projectile.
Cavitation effect may be a way to duplicate the Hydrostatic Effect by the spin rate and design of the bullet, Cavitation is a phenomenon in which rapid changes of pressure in a liquid lead to the formation of small vapor-filled cavities, in places where the pressure is relatively low. When subjected to higher pressure, these cavities, called "bubbles" or "voids", collapse and can generate an intense shock wave. Wikipedia
This can and has been done by Umarex for a muzzle loader round, The nose of the bullet has slits cut out so that as it passes through liquid filled tissue its spin causes cavitation of that liquid thereby increasing cellular rupture resulting in much of the same trauma as Hydrostatic Shock.
Think of it this way, your tomato out in the garden, you go out and cut the skin it can heal, but if that tomato freezes it will be a tomato slush when it thaws out, this is due to the fact that the cells in the tissue has ruptured and are dead.
Essentially the forced sudden change of liquid to gas and back again is what causes such massive secondary trauma to surrounding tissues of a subject.
So now I want to bring an old dead thread and subject back to life in hopes that perhaps some manufacturer in the Airgun Slug world might take note.
There has naturally a lot of talk about the Hydrostatic Effect in Airgun ballistics and even if it exists at such a slow fps compared to that of firearms.
I believe it does exist but at a much smaller scale due to the fact that the projectile isn't producing a pressure wave that a supersonic bullet does.
This being said the question and quest is to create a bullet that at subsonic speeds can through design amplify the Cavitational effect that will produce the same results as Hydrostatic Effect
Perhaps I should first explain my theory as to why these two terms are different even if they share some of the same results.
The Hydrostatic Effect is caused by the pressure wave of the bullet traveling at supersonic speeds this cone of high pressure follows the projectile into the subject creating much of the same trauma that can result from tissue being exposed to extremely high air pressure. The cells in the tissue quite literally explodes. This cone of high pressure is in direct corrallation to the speed of the projectile.
Cavitation effect may be a way to duplicate the Hydrostatic Effect by the spin rate and design of the bullet, Cavitation is a phenomenon in which rapid changes of pressure in a liquid lead to the formation of small vapor-filled cavities, in places where the pressure is relatively low. When subjected to higher pressure, these cavities, called "bubbles" or "voids", collapse and can generate an intense shock wave. Wikipedia
This can and has been done by Umarex for a muzzle loader round, The nose of the bullet has slits cut out so that as it passes through liquid filled tissue its spin causes cavitation of that liquid thereby increasing cellular rupture resulting in much of the same trauma as Hydrostatic Shock.
Think of it this way, your tomato out in the garden, you go out and cut the skin it can heal, but if that tomato freezes it will be a tomato slush when it thaws out, this is due to the fact that the cells in the tissue has ruptured and are dead.
Essentially the forced sudden change of liquid to gas and back again is what causes such massive secondary trauma to surrounding tissues of a subject.