I had a thought tonight while driving home from the range. I want to take a 404 jefferys case cut it to an even 2.500" a 40* shoulder run body taper form .544" to .534" with a .320" diameter neck. I figured I would name the cartridge either the 284 Loudnboomer or the 7mm Fly Rod. What do you guys think velocity wise I could get out of that running the 175gr SMK? Maybe a 9 twist barrel.