Funny thing is I have a 375 ruger and a 458 lott. I'm just trying to learn the limits of the 416 rigby. I've toyed with big bores for a while but not this cartrigde. I have yet to load a round for this gun which is why I'm asking questions. Which brass is best to handload? I was looking at hornady because it has done well in my 458 lott and 300 wby. I was also looking at norma brass. Thanks guys