223 rounds for my AR. I desire to use Hornady 150gr BTSP bullets, but can’t come across any data to help that. Working experience tells me the 550 push prefers a ball style powder. Any thought in which to start? Critiques can only be submitted while being logged in. Remember https://300blackoutreloading15881.ageeksblog.com/36417838/5-easy-facts-about-brass-300-blackout-described