The "Parashooter" you want is the same guy who goes by Parashooter on CGN, but he is better contacted through the swissrifles forum
pub18.ezboard.com/btheswissriflesdotcommessageboard That having been said, his postings are so explicit and well-illustrated that there should be no need to contact him.
A Google on "Parashooter Vetterli" will come up with most of his works. Here's a good place to start:
telecom.hartford.edu/swiss/vetterli.htm
I used the "simple" method and it works great. I use the Lee 310gr cast bullet which works well over 10 grs of Unique powder (among others). Win 348 brass needs to be trimmed to 1.600", annealed and then sized in the Lee die, and you're ready to go.
I shot mine in a past Milshoot and placed 4th out of 14 (with its rudimentary sights, and loading singly, as I had some feeding problems that day). They can be made to shoot well!