RE: sierra gameking's on deer.
My workhorse bullet in .270 & .30 calibers are the Speer Mag Tip Soft Points in 130gr and 150gr, respectively, for almost all my deer hunting. Occasionally, I'll load up some Sierra Prohunter Round Noses when I expect short range (under 100yd) work.
But you mention elk or moose, and I'll opt for the Nosler Partition, although Nosler Ballistic Tips have never failed me either. Don't like bear meat and don't need a bear rug - so I don't specifically load for them...but out of respect for the brutes I do carry a 10mm sidearm when in their neighbor.
Heaven is best viewed from a deer stand at sunrise in the forest