I own and reload for both rounds and have owned both for several decades.
I think reaming the 300 Win chamber to 300 WBY is an exercise in futility.
In actual performance there is little difference between the two rounds when loaded to the same pressure in the same length barrel and zero difference that will be seen in the field.
Much more performance gains can be seen from bullet choice. With the higher BC bullets and powders available today the 300 Win can be loaded to deliver much more velocity and energy downrange than factory 300 Weatherby rounds.
It's also easier to find more sources of 300 Win brass.
Investing any money into a $10 Remy barrel except to replace it is a waste of money...if I take off a Remy barrel it gets recycled.
