Thanks to all. Cooler heads have prevailed.
This gun was a gift from the heavens. A trade where I realistically gave half of this guns' worth in the secondary market, a third of a new CSMC Fox so configured.
I'm a Skeet and Quail guy and will most likely open the chokes to suit my shooting.

S.G.Jones,
I saw that recipe on the Hodgdon site and also found another using 16gr. of Clays and a Remingtom wad for a 3/4 oz., 1150 fps, 6500 psi load.

I'm going to try both! Frequently.