Why did Mauser in the 70's

[Vlim]

Michael:

-Creating a uniform frame curve that works with all barrel lengths and both 9mm and .30 luger.
-Introducing castings as cost-effective alternative for previously milled/machined small parts.
-Allowing interchangeability of parts beyond a level accomplished by earlier manufacturers.
(the only 2 parts that needed to be 'mated' were the receiver and the rear toggle part).

[Michael Zeleny]

Originally Posted by Vlim

-Creating a uniform frame curve that works with all barrel lengths and both 9mm and .30 luger.

Didn't DWM do that in 1902?

-Introducing castings as cost-effective alternative for previously milled/machined small parts.

All praise Bill Ruger.

-Allowing interchangeability of parts beyond a level accomplished by earlier manufacturers.

According to Randall Gibson, that was done by Krieghoff.

(the only 2 parts that needed to be 'mated' were the receiver and the rear toggle part).

I think W+F took box stock fit as far as it can go without degrading accuracy and/or reliability. Are there any test data showing quantifiable performance improvements realized in the construction of the Mauser Parabellum?