300 AAC Blackout brass, sizing without the expander ball will nevertheless enhance the neck rigidity in lots of the latter. For what it's worthy of, sizing brass with no expander ball also goes a long way toward retaining scenario necks straight, which generally results in sound accuracy. Felt recoil will https://raymondijdwh.thezenweb.com/what-does-300-aac-brass-mean-77188113