Pretty much any scope under $1000 is using Chinese glass, Leupold, Zeiss included. The high-end Euro brands still make their own lenses. Don't know about March and L/force. I've been to the Swarovski factory (2002), unbelievable what goes into those things. We watched the lense cleaning process, amazing. You can certainly see why the price is so high. They make Khales in the same factory. We got to try out some of their scopes in the onsite, underground 100m range with electronic target system, wow! They treated us to lunch, their canteen was like a fancy restaurant, maybe that gets added to the price as well.
Still wondering about those graduated reticles though. A 6.5/284 has a way different trajectory to say a .308W. What trajectory are they calibrated on?