This sounds like a cool project, but two things caught my atten[b][/b]tion...
1. I curious why not a .416 rather than a .404. I would think that .416" bullets are even more available than .423".
I made some early dummy rounds for the AR thread. Idea was to eliminate any shoulder and have a simple to make straight walled case as a 'little brother' to the 458Lott that would feed with absolute ease. Mild recoil at 450/400NE levels was an added bonus.
Cheers...
Con
PS... Added bonus was that it was hoped a 375H&H reamer with 423" neck/throaters could be used to chamber, and Lee 375H&H dies honed out. A ghost shoulder was also spoken of early like in the 470Capstick.
