Hi everyone , I am hoping to have a 280 ackley built on a Sako 75 action next year. The barrel will be a senduro contour and finnished at 28 inches. I will be having the chamber cut to use the Nosler custom 280 ackley brass and my Newlon dies will be cut with same reamer too!! I plan to run the 162 A-maxs in this rifle and my question is what powders do you recomend please??? Thanks ... Ray.