The 7.92x57 IS is a very serious sniper's cartridge.
Sierra makes a 200 grain 8mm Match King. Such a bullet properly loaded would make a deadly long range performer.
The 7.92x57mm has never been properly loaded in North America. But in the right rifle, properly loaded it is absolutely deadly.
Remington made a 700 classic in 8mm Mauser and I would love to have one.