Starline Brass 300 AAC Blackout Unprimed Cases, 100/Bag

Description

Starline unprimed brass cases for 300 AAC Blackout are supplied in a 100-per-bag quantity for reloaders. The .300 Blackout is based off of a shortened 5.56x45mm case that is necked to .30 caliber. For AR-15 platform rifles and pistols it only requires changing the barrel to go from 5.56 to .300 Blackout; the caliber is commonly used in both supersonic and subsonic loads, including suppressed applications.

Key Specifications

• The manufacturer is Starline.
• The marketed product identifier is 300BLKEUP100 Unprimed Cases.
• The caliber is 300 AAC Blackout/Whisper (7.63x35mm).
• The material is Brass.
• The metal type is Brass.
• The recommended use is Reloading.
• The quantity is 100 Per Bag.
• The style is listed as Small.
• The case length is 1.356″-1.360″.
• The product type (category) is Rifle.

These unprimed Starline brass cases provide a practical, straightforward starting point for reloaders working with 300 AAC Blackout. Supplied in a convenient 100-count bag and made of brass, they are suitable for batch loading and custom handloading workflows where you control priming, powder, and bullet selection to meet your specific needs.