223 rounds for my AR. I wish to use Hornady 150gr BTSP bullets, but can’t obtain any info to aid that. Knowledge tells me the 550 push prefers a ball variety powder. Any idea the place to get started on? The five.56 NATO origin Tale runs through the turbulent nineteen https://claytonpgtoh.idblogz.com/38208982/getting-my-300-blackout-cases-to-work