The .416 does round like a winner.
The use of a lighter, narrower bullet results in a significantly higher muzzle velocity and superior ballistic performance to the .50 BMG, and the .416 Barrett is claimed to retain more energy than the .50 BMG at distances over 1,000 yards. Barrett claims that this cartridge is capable of propelling a 398 gr solid brass boattail spitzer bullet out of the 32-inch (810 mm) barrel of a Model 99 single-shot rifle at 960 m/s (3150 ft/s), giving it a ballistic coefficient of .720, and keeping the projectile supersonic out to 1,737 metres (1,900 yards).
Still supersonic at 1,700m. Not bad