223 rounds for my AR. I would like to use Hornady 150gr BTSP bullets, but can’t find any details to assist that. Knowledge tells me the 550 push prefers a ball style powder. Any idea where to start? Like the 125-grain Nosler AccuBond, this bullet shipped sub-par precision from the https://dantepblvf.prublogger.com/37879906/300-blackout-cases-fundamentals-explained