Were it me, I would reference loads from several manuals and pick ones using powders I have on hand.
Load up some test loads at near max load posted and shoot all at same session to see if anything jumps out.
I almost always start with around .030" jump at ground zero, but I am about to do a test with loads at .010, .050,.090, and .130"
jump using same powder and bullets. We'll see what that tells me.
