Skypilot thank you.
My measurements came out to an average 3.088 with the Sinclair so I will start at 3.048 going off Freds advice of .040 jump.May also try a few at 2.775 Sierra's COAL just to satisfy my own curiosity. I am only going to load 5 of each to see what happens, if no luck then either a different barrel or a different caliber altogether.
As for the 12 twist to answer others that is what is used for the 150-155 grn. bullets for palma shooting also the 13 twist just depends on manufactor. I shoot the 150's out of my Mod. 10LE 10 twist and it stays well under moa @ 100 and right at 1" @200.