Since the Model 70 will handle the 375HH and 458Lott, seems like a full size 460G&A would also fit. Or maybe not if receiver is machined different at the factory and the OP is not starting with a H&H length bolt throw? If possible the longer case will allow for lower pressure to get the same performance as the short version or go a little faster if wanted.
Since the 450 Rigby was mentioned my understanding the claim to fame for that round was performance at low pressure. The hunters native to Africa seem to value that quite a lot. Or so I read from those who like the Rigby. I am just in this for the fun with a kind of big bore fetish.
I do remember reading about both back in the good old days when I had a G&A subscription. Today everybody loves the 458wm. Back in those days there were a lot of unhappy campers.
