To each his own, and I am glad it works for you, but I would not personally use the nosler ballistic tip for elk. Here is their description of it:

The Nosler Ballistic Tip is specially designed for those long-range shots. Whether the targets are varmints, predators or medium game, this fast, flat-shooting round will find its mark. The color-coded polycarbonate tip provides easy identification and prevents deformation in the magazine. Take advantage of wind-defying performance and immediate energy transfer with this versatile bullet.


Even they say they open up a lot and are intended for medium game