223 rounds for my AR. I would like to use Hornady 150gr BTSP bullets, but can’t locate any data to guidance that. Encounter tells me the 550 push prefers a ball type powder. Any plan in which to start out? Just caution when hunting with .three hundred Blackout subsonic rounds. https://300-aac-brass86284.elbloglibre.com/39119448/top-300-aac-reloading-secrets