I bell just enough to seat without shaving jacket and crimp just enough to remove the bell. 9mm spaces off the case mouth, so make sure you don't crimp too much. For an expaple, look at the different crimps on factory 9mm vs rimmed like 357. If loading lead, you'll need more bell than if loading jacketed.
Dont tumble pistol brass with your other brass.
For range shooting, hp 38 is a fairly good compromise between case fill and economy. For full power loads, try hs6 or ram shot silhouette with sp mag primers.