Yes - that would be interesting.

The ability to trim back split necks and still use those shortened cases might also be of value to an avid shooter - after annealing, that is.

Straight cases can be difficult to get the powder to burn well - which is why John Buhmiller experimented with his 'duplex primer' system of loading. I tried his methods in one of my .458 American's and it worked a treat, allowing me to reduce the charge by 6 to 8gr. and obtain the same velocity.

It only works with full cases of powder as the bullet's base has to hold the second primer in place up-down in the powder column. I merely seated & crimped the bullets more deeply as accuracy wise, that rifle did not 'give a hoot' where the bullets were seated.