Extrapolating pressure with other variables known

[56S]

I looked at QuickLoad's website ans noticed it wasn't for sale in the US. What I'm trying to do is take some of the guesswork out of reloading with specifically H4198 in the 17HH. Hodgdon shows a max load of 11.8C with a very reasonable pressure. I'm not going to post any specific powder weights here but would via PM or email is someone could crunch the numbers.
Ultimately I do want to purchase a program like QuickLoad to do my own calculations. BTW, I've found H4198 to be a viable powder for my 17HH 527A.