223 rounds for my AR. I desire to use Hornady 150gr BTSP bullets, but can’t discover any facts to aid that. Experience tells me the 550 push prefers a ball form powder. Any thought wherever to get started on? You'll have to tweak subsonic handloads determined by your rifle and https://andreizkve.tblogz.com/the-basic-principles-of-300-aac-brass-52213426