I'd certainly favor the 175 gr bullets in the .280/7mm class. Szhin mentioned this (The bullet was a Sierra "game king" of 150 grains as I recall).
I killed quite a few elk with 7 mags Sierra Game Kings,but they were all in the 175 gr weight class.150 gr is way to light for a 7 mag unless it is a tougher bullet. The biggest bulI ever l killed, a big 7x8, was put down with one shot using a 180 gr Sierra Game King, .06. Not saying that is the only bullet to use by a long shot, but my post above calls out where to put it is more important
Hard to go wrong with a Nosler Partition in just about any caliber.
Keep the heavy for caliber bullets stuffed in the 7mm or .280 and you don' t need to bring those 45-70 o4 .444.I've killed quite a few elk using 180-220 bullets in my .06. In the open or thick timber
