I am using W760, CCI 200's , RP brass, 2.800" COAL.
My charge weight is below book minimum so you will have to work up your own test loads, use the information on the Winchester powder site.
I am using a 26" barrel and custom chamber so what I get for velocities will be way out from what you get. I would guess you will get these numbers with 46 grains of W760.
My powder charges went up in .3 grain increments , either way on my load by .3 and my accuracy began to fall off.
I'd start with .5 grain increments and fine tune from there , don't play with your seating depth, leave it at one spot and tune your powder from there.
I also have test data for 130,139,140,150,162, and 168 bullet weights if you are interested.