I have custom dies and reamers made, so I thought I'd share my FF process, this is from my gunsmith, the same one I'm trying to put out of business... he is a good friend tho.Do it!
I'm loving my shorty suppressed setups, here's how it looks with my Nomad LT.
Before anyone freaks out about the stock it's temporary so I can fire form a few improved cases to send in for custom dies. Big thanks to @Rum Man man for sending it to me, I won't have my LRH for another 2-3 months
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Fire your first set of rounds - bullets seated as deeply into the lands as your rifle will tolerate. Anneal your brass, neck size and load to the same length with the bullets firmly jammed into the lands for the second firing. This process has helped ensure that my cases have expanded to the fullest extent possible. There is less fudge factor and guess work in their measurements and I end up with a very high quality procuct the first time around. YMMV Good luck with your project. I wish California would allow us to run a suppressor...