I post this on another forum but I would want to know your oppinion:

Do anyone know why Winchester decide to use a .277" bullet when a 7mm was easier?
I have the theory that Winchester do not want to copy the 7x64mm......
Also I was told that they took the idea from the 6,8x57mm Chinese

RWS and Roth made ammo for the 6,8x57mm but could not find any info about Winchester.

Thanks
Martin