The Kar98k used a 7.92x57mm cartridge, not a 8x68mm cartridge...
And so? That doesn't change the Ballistic Coefficient of the projectile now does it
One of the tables shows BC results obtained firing the sS projectile with the 8x68S cartridge, which in effect is a 8x57mm on steriods. They shoot the exact same projectiles though.
Commercial post war:
8x57mm IS with S&B sS (12.7 g) = 790 m/s
8x68mm S with S&B sS (12.7 g) = 932 m/s
7.92mm S&B sS Average Ballistic Coefficient = .557 (G1)
Post war surplus:
8x57mm IS with FN sS (12.75 g) = 740 m/s
7.92mm FN sS Average Ballistic Coefficient = .584 (G1)
WW2 surplus:
8x57mm IS sS Patronen (12.8 g) = 760 m/s
7.92mm sS Patronen Average Ballistic Coefficient = .595 (G1)
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