safariman,

This rifle was built for a specific purpose as detailed. Adequate for hogs with easy extraction. But one must not forget just plain old informal target practice. A most pleasant pursuit.The listed loads are reasonable for plenty of range practice. A field carry rifle just over 8lb 24inch barrel.
For big game I use 465 or 500gr in a 458 Win Mag , and a 375H&H with 300gr or in a 375Chatfield Taylor 250 or 270gr .
As a younger man I favoured the 416 Rigby but, I grew to dislike the very sharp recoil.