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Deprime before or after tumbling? (Newbie)

I have started my first reloading attempt and I deprimed first with a depriming die then cleaned with corn cob media. I have resized and trimmed. I have noticed quite a bit of the brass has some of the corn cob media in the primer pockets. Seems like the easiest way to get it out is to blow it out with compressed air, I assume that's fine? Do most clean then deprime to avoid this issue? I know depriming and resizing at the same time is an option but had planned to deprime beforehand. Thanks
Almost 11 years.
 
I have started my first reloading attempt and I deprimed first with a depriming die then cleaned with corn cob media. I have resized and trimmed. I have noticed quite a bit of the brass has some of the corn cob media in the primer pockets. Seems like the easiest way to get it out is to blow it out with compressed air, I assume that's fine? Do most clean then deprime to avoid this issue? I know depriming and resizing at the same time is an option but had planned to deprime beforehand. Thanks
If you want to keep things cheap and simple here’s what I do:
  • Clean brass in dollar store plastic bin with hot water, a squirt of dish soap, and about a teaspoon of lemi-shine (put lid on and shake the bin up, let sit for a while then shake it up (repeat this a few times) then drain water and rinse brass off)
  • After letting it dry for a few hrs put brass in case holder and lightly lube the inside of the neck of every other piece (I use a Qtip and Lee case lube)
  • Lightly lube the bottom half of each case with Lee lube before running into FL die to decap, bump shoulder, and expand case neck
  • Wipe lube off bottom half of case with rag that has some d-limonene or iso alcohol on it as a solvent
  • Then trim (only if needed), chamfer/deburr/brush neck
  • Prime with RCBS universal hand primer
  • Weigh powder with lee scoop set and hand trickle to get target weight (using rcbs check weights, a used rcbs 502 beam scale, and this $20 GEM20 Digital Scale (which goes to hundredth of a grain) for double checking)
  • Seat bullet with hornady micrometer seating die based on a target COAL or preferably CBTO (using hornady comparator tool)
 
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