Highly bottlenecked cartridges definetly reduce pressures AND increase velocity -without changing anything else. It's FREE, and SIGNIFICANT. Less of a powder slug being pushed I guess.
Not a scientist, but I suspect shoulder angles could be optimized to reduce turbulence and alter the pressure curve in a desired way also. Friction reduced bullets offer similar potential, But other adjustments have to be made.
Lot of other things. Maybe even something that hasn't been done already.
We should embrace change. Crawl out of the tarpits and try em.
