Hi all!

FWIW, IMR-4350 is about as close as you can get to the old Laflin & Rand .30 WRA powder that was used in the original .30 Army ammo.  40.0 grains with a 220 RN bullet is the standard load, and I've been shooting this load in matches for years.  Graf and Sons sells new GRAF headstamped brass... and Hornady also offers brass (you can get this from some of the other online places).  Both are excellent quality!  As others said, neck size only after the initial sizing.

Which ship were you stationed aboard?  I did 4 years and 3 deployments on the USS Ranger CV-61 based at NAS North Island during my Naval Career!