I work up.my.loads not start at the top .This rifle is too valuable to mess up in.any way .These big bore Winchester 94 rifles are stronger than Marlins in the same caliber .My.loads for the Winchester 375 in my Winchester would damage a 375 win in a marlin.The aa1680 powder had lower pressure than other powders I tried .I started with the lower weight bullets with less pressure then went step at a time going.up.in weight .The Speer 235 ,grain in.375 was awesome accurate .I will do the same thing with this 444 step at a time .