Factory New Jagemann 300 Blackout Brass.
This brass is created under the tightest quality control standards and will reliably function in all firearms chambered for 300 blackout. This high quality brass is exceptionally durable and will withstand many reloadings.
Drawn from American-made premium brass cups, each casing undergoes rigorous in-line and post-production quality assurance testing to ensure a flawless casing of unparalleled durability and dependability.
Neck Diameter: .334 in (8.4836mm)
Shoulder Diameter: .3607 in (9.1617mm)
Base Diameter: .378 in (9.6012mm)
Case Length: 1.368 in (34.7472mm)
Primer Type: Small Rifle Primer
Max Pressure: 55,000 psi