I think 10# is too heavy for a x62 also.
My 9.3x64 Brenneke's weigh:
1. 8# even, empty, scoped
2. 7.75# empty, sans scope/rings
I have found both to be very manageable while shooting.
I am getting a 404 Jeffery built that I am aiming for 10+ pounds in that rifle/cartridge.
I know that recoil calculators aren't the end all when it comes to felt recoil since there are many other factors. But it would be a great place to start. Plug in numbers on other rifle/cartridge combinations you have shot and figure out your what you are comfortable with and build from there. If recoil is the main concern for the weight.
