223 rounds for my AR. I want to use Hornady 150gr BTSP bullets, but can’t obtain any facts to help that. Knowledge tells me the 550 press prefers a ball variety powder. Any strategy exactly where to start out? Given that the 300BLK was originally made for the AR-15 and https://300-blackout-cases96284.get-blogging.com/39322292/the-best-side-of-300-aac-reloading