Here's a picture of a few of my cartridges and some of the bullets I use in my .30 Lugers.
From the left: Factory W-W 93 grain FMJ; 95 grain cast bullet of my design from my custom NEI mold; Cast bullet loaded in R-P case; .308" 100 grain Speer "Plinker" loaded in a case made from a GI 5.56mm case; .309" 93 grain Norma FMJ in an R-P case; 90 grain JHP Sierra .312" bullet swaged to .310" in a W-W case; Hornady .308" 86 grain SP bullet and 85 grain Hornady .312" XTP bullet.