I think this invitation may be the perfect time to expand the collection, if finances permit, to say a nice 300 WM, Wby, RUM. If this isn't possible then the Swede with 140 Parts and get as close as possible and forget 400 yds. It is possible to kill elk at 400 yds with the Swede, hell you can watch a girl kill a moose at 800 yds on youtube with a 243, but is it prudent and responsible? It is very easy to hit an elk sized target at 400 yds, it's a whole nother ballgame to kill it cleanly. Those shots are best left to those who do it regularly and practice regularly with cartridges capable of doing this kind of hunting and shooting.