200 gr 303 cast load

[wayward wind]

need info using imr 4227 powder 18-1900 fps hunting load.rifle is win.p14 its original shoots 180 ww realley good.Got some 200 gr cast from the bullet barn want to use them up and i would like to use powder up too if possible

[JLA]

Lyman 49th lists 20 - 26.5 gr. under a 200 gr cast in .303 brit. Somewhere between there should do it. ;)