I do everything as it doesn't take much more time and it protects the ammo against things that will keep it from going bang.
All we are talking about adding is:
- decapping before tumbling
- cleaning the primer pocket
I use a Lyman Case Prep Express with a Lee case trimmer for the trimming which normally would occur after resizing but in that I do this task every cycle, the case lengths never get too long.
Cases that have bent mouths or something else that would foul the loader or firearm are set aside to be corrected or tossed. The others are immediately tossed in the case collator on the press.
This is actually how I do pistol ammo on three Load-Masters. I'm setting one up now for my Mini-30 (7.62x39) and will do everything the same way. I load 32 Auto, 380 Auto, 9mm Luger, 9mm Makarov, and 45 Auto on the progressives. Just bought the shell plate for the 25 Auto and will start that and move it from a turret press.
I like how Tactical Cowboy mentioned the source of his brass. My is all once fired by the same firearm that shot it.