I talked with Eric at Hollow Point Molds who said I could send my ram(s) to have him thread them for a pin that matched those of the mold so that the cavity wasn't deformed upon loading. This sounds good, but knowing there is limited room I'm wondering about using a short pin (and allowing the boolit to seat deeper).
Lets just say this threaded pin in the ram is 1/3 to 1/2 the length would it likely keep the shape of the cavity in tact upon loading?
The flip lip side would be to make a shallow cavity, which I had also considered. Initially I made WFN boolits assuming expansion might not happen. Anything beyond .452" seems a bonus, but then seeing the gel blocks comparing a non expanding non magnum bullet vs a HP shows a tremendous difference.
I truly like the idea of a short loading pin in that I could have a shallow cavity and deep cavity depending on intent (max penetration vs damage).
I understand that this is a peculiar question, and I'm not so sure anyone has done such yet. But if the cavity isn't at least uniform it isn't going to be all that accurate, especially if I use them in a revolving carbine or sabot in a muzzleloader.