.
Applied guesstimation, average a couple sets of charges for different 100s, average a couple sets of charges for different 115s should give you an idea of the range.
Start with the 115gr start charges and work up, keeping you "average" MAX in mind.
Even if you had listed data you would need to work up to a Full power charge weight. IMHO
Plunk to get the longest OAL that will work in your gun and then go maybe a hair shorter.
May not matter for what you after but sometimes just a bit below the MAX will shoot better.
If it came down to it I would say shot placement is going to be far more important than 20-50fps.
Velocity helps but shot placement is critical.
CFE-P and BE86 gave me good high side results with 100s.
I haven't had a chance to try my Silhouette yet but Ramshot does list +P data.
Might try emailing Alliant/Hodgdon/Ramshot/.... (depending on what powders you have)and ask if they have any data, always worth a try.