Set up for the load you want, chrono it for safety, then have the gun re-regulated for that load.
That's likely cheaper and quicker than running through an infinite range of possible combinations until you find something that might work.

As I recall you've modified your SxS to some extent with recoil reducers and a big recoil pad.
That'd screw with it's 'original' regulation anyway.

Choose a load and have it done!

--Tinker