is that a 400h&h necked up for a 416 bullet?went over to my gunsmith since he had questions about my 416 rigby build. we decided that it would be too much work to fit into a p14 action. since i have the 416 blank barrel and wanted an English caliber i mentioned the 400H&H not realizing it uses a 411 bullet till i got home.any thoughts ? i don"t mind a wildcat since ill be handloading thought about a hoffman or a taylor