Seems the most likely explanation, the real mystery is why the poster is being so obtuse about it. And as I pointed out, even though he received the answer to his original question (14.0 grains of some unknown powder) the information is essentially useless. Without knowing what the powder is, there is no way to know what kind of effect a reduced charge
of any kind will have on muzzle velocity.
Furthermore, his real question is, "With the pulled armor piercing bullet of the original Winchester AP ammo, at what muzzle velocity would the bullet fired at contact distance stay inside a human body?"
That brings up even more unknowns. This ammunition was designed to penetrate hard substances so there is no way to estimate its penetration characteristics on flesh, other than to assume that it would be greater than conventional bullets. Even the plain old 158 grain round nose lead bullet in .38 Special (typical muzzle velocity of 850 feet per second) has a reputation for over penetration. One would think a pointed, metal capped AP bullet would be even more likely to exit a body, but there is no way to know at what velocity it would not. 400fps? 600? It is purely guesswork.
Regardless, there isn't any way to estimate what charge of the original powder would create any given velocity because we don't know what it is. And even if we were to guess it was something like Hercules 2400, there isn't any load data for a low velocity with that powder because reduced charges of slow burning powder is a bad idea - every loading manual warns against such shenanigans. A half charge is not going to produce half the velocity, it doesn't work that way.
I guess the good news is that AndrewWeber can take his 14 grain charge and reduce it to whatever he wants, nobody can prove he's wrong....
