Please show me the load data for a 10mm shooting a 200gr bullet at over 1200fps. There is no sense in rating your bullet faster if the cartridge can not achieve that velocity. What cartridge do you suppose they based their rating on?

The 401 Herters PowerMag is basically dead so 10mm is the hottest commonly found cartridge for this bullet. It will also most commonly be shot in a semi auto handgun and not something like a Contender single shot which can achieve a little more velocity. Even in the Contender around 1500fps is max and that would be considered a very hot load.

The 180gr bullets can obviously be shot faster than the 200gr in the 10mm. So of course they will be rated higher.

Using Hornady's .199 BC which seems inflated, a 200gr XTP leaving the barrel at 1800fps is impacting around 1450fps at 100 yards. By 125 yards its under 1400fps. Using Nosler's .163 BC for their 200gr 40cal is probably closer to the truth.