I wish I had 1/2 the time and money back I have spent dicking around with various non magnum cartridges in the last 25 years.
95% of my shooting chores could easily be handled with a .308 ,Scenars and Varget.
I keep telling myself that I really need to trim the accumulation down to just .223, .308, and .300WM. Those 3 centerfires would cover my needs easily.
These days it seems that everyone wants a 6.5 something (like a creedmore), and think a .308 is an antique, but I find it still kills Mule Deer and Elk with ease.