Great you got to shoot it!!
Get out, enjoy it! Try various reloads -- just for fun!!! (reloading pays for this cartridge)
Make sure you see how much work to clean the bore of the fouling!!!
Started with a .458 Win -- later sold it. Got a .375 H&H... got another .458 win, then a .458 Lott, then a .416 rem -- latest is a .416 Rigby... May this one be for you the first of many to come!!!
Dan