My Suggestion would be look at the posts for subs for 300 Blackout, as this is pretty much it...
light 30 cal projectiles being a Barnes Tac-TX or Hornady in a 110gr being your go to if you don't have a 1:8 twist that can stabilise the heavy 190+ pils. You're probably looking around 8-9.5 gr of 2206h or equivalent or a 95% fill of your normal load in Trail Boss as your go to. Also used 125gr BT Hunting (green tip) Noslers with pretty good results.
Cheers
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