Add 10 grains to #3 and +p to #1 and you have it.
#1 .38+p 125 grain
#2 .38+p 135 grain
#3 .357 135 grain
#4 .45ACP 230grain
Penetration in water filled milk jugs of above:
#1 3
#2 4
#3 4
#4 4+stopped in 1st kitty litter jug after milk jug
My thoughts:1) water ain't ballistic gel 2) Gold Dots hold onto their jackets come hell or high water -- Critical Defense 9mm and .38 shed petals of their jackets in water, .357 125 grain sjhp fragments into 2 big bits and jacket bits.
I think I will try the .357 load in a 6" GP 100 next. I would imagine the velocity is at least 100 fps greater than a 2" barrel. I have a feeling it may be actually slower shot out of our Winchester, but we shall see what happens in water.