I'm gonna neck down my thermos jug to a phonograph needle! Expected FPS=12,500
Oh schitt.....you guys don't know about 'phonograph needles'!!
Handloader had a humor article in the 1980s about the .04/50 meaning the .50 BMG necked down for a 4 cal sewing machine needle.
Melvin is building me a .260 which he recommended over the cm due to greater brass availability. I have used large capacity cases in the past, and found they wrok best with longer barrels to maximize their potential. Then I found that small cases also can take advantage of more barrel. I am happy if the load I choose gives good hunting performance and 2800-2900 fps.
