If just one powder and projectile generally for subsonic loads turns out to operate for .300 Blackout that will be terrific. If it turned out to that CFE 223 could fill that role that could be the What's even better worlds. For that reason, the various armies supplemented the rifles https://caidensdoxh.madmouseblog.com/19479168/getting-my-300-blackout-bullets-for-reloading-to-work