Just figured this section needed a new post.
After a couple months, I just recieved my new JIM444530E yesterday. I also ordered a new BACO expander plug for the bullet as all of my other one's are specific to GG. The new expander is a .450"-.453". The bullet they sent with it is as close to .444" as I can measure with my micrometer. Will probably start with 16/1 as that alloy worked well in my 40/65. I have many different alloys and quite a few pounds of tin, so I can always change if necessary.
I jumped into the PP a few years back with my 40/65 Crossno Hepburn. After the advice from here, it was shooting comparable groups to GG right from the start. Wiping between shots, I was able to slightly improve consistency over time. The mold I have for it is a Brooks elliptical.
The new mold is for a 45/70 CSharps 1885, 32" heavy octagonal Badger 1-18", SS trigger, great wood, Heilman rear Soule, and who ever CSharps uses for a spirit level front aperture. With my Paul Jones 530 grain GG mold, this rifle is a fantastic shooter. Now to see what it'll do with a PP bullet.
FWIW, my paper is Eaton Eminence onion skin kokle finish 9lb. I have a couple boxes of the stuff.