The venturi effect in bullets

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Can /sci/ apply its knowledge of fluid dynamics to the design of bullet caliber? I think theres some things that could be done by people who know what they are doing in this field, most cartridge designs are well over half a century old at this point.


Weatherby one example of a company that uses modern understanding of fluid dynamics for cartridge design, as far as i can tell it is the only company that uses the venturi effect in order to achieve higher velocity from their bullets, see the weatherby design on the right compared to traditional bullets.

A round with a weatherby double shoulder gains 100 feet per second or more of muzzle velocity compared to a standard bullet. How would /sci/entests design the shoulder of a bottle necked rifle or pistol bullet casing in order to maximize ballistic performance?