I used the .444's for shot loads only. The improved patterning came from the internal ballistics, I'm sure, compared to the plastic hulls - perhaps more even pressures, velocities, etc. Whatever it was, worked. Got 2 of them, maybe should try shortening and rifling one.

Those 9.3x74's blown out & perhaps shortened to about 2.45" - to allow .5" bullet ahead of the crimp, sounds quite interesting. If the twist is fast enough, ie: 18", then a longer bullet, ie: 3/4" or .85" or so out of the case will then allow a .444 case at 2.2" to work well without excessive jump. Interesting.