Seems to me the Norma stuff used to be loaded to somewhat over 50,000CUP. That puts it right up with most modern ammo - especially when loaded to those levels with modern powders. Due to having a larger groove and bore diameter than the '06, if loaded to the same pressure, it will provide about the same ballistics, even though lacking a bit in case capacity. My old blue covered Pacific manual not only shows this in it's loads, but explains it as well in the text.

There are no flies on modern 8x57 loadings - only on those of RP and WW, designed and loaded, possibly, for tight neck chambers with .318" groove diameter rifles.