S, no expansion whatsoever with the hemispherical nosed NOE. My castings were predominately wheelweights with maybe a little dental foil and slight “potluck” ish metallurgy thrown in. Hardness did not quite approximate that typical of wheelweights but was definitely nowhere near pure lead either.
I am not brave enough to risk the chronograph concurrently with testing in water. I shoot enough to get a representative average and, with the gun and powder oriented the same way shoot for effect.
Given point of impact and recoil effects in exchange for what is obtained, versus my impression that a wadcutter is delivering from the get go, I’m inclined to stick with the wadcutter of 148 grains overall when speaking of non expanding bullets and controllability. To maximize such in an Airweight 700 odd fps seems appropriate or maybe I need to practice more intensively if I want to go much faster.
I will say however that witnessing the instability and behavior of the NOE has been informative and carrying it and the prospect of using it if that is what I had would not leave me feeling unarmed, certainly.