Fully Processed .300 Blackout

Fully Processed .300 AAC Blackout Brass

Our fully processed .300 AAC Blackout brass consists primarily of genuine once-fired brass with .300 AAC Blackout or .300 BLK headstamps. Some lots may include a small percentage of professionally converted .223/5.56 brass. Every case is processed to exact .300 AAC Blackout specifications and is thoroughly inspected to ensure it is clean, consistent, and ready to load.

Processing Includes:

• Primarily factory .300 AAC Blackout headstamp brass
• May include a small amount of converted .223/5.56 brass
• Deprimed and full-length resized
• Trimmed to proper SAAMI specifications
• Primer pockets swaged when military crimps are present
• Chamfered and deburred
• Wet tumbled with stainless steel media for a like-new finish
• Case gauged to verify proper chamber fit
• Final visual and dimensional inspection

Why Choose Our .300 BLK Brass?

By using mostly factory headstamp .300 Blackout brass, you get greater consistency and uniformity while still benefiting from carefully processed, reload-ready cases. Whether you’re loading subsonic rounds for suppressed shooting or supersonic loads for hunting, our brass is prepared to perform.

Perfect For:

• AR-15 rifles chambered in .300 AAC Blackout
• Suppressed and subsonic ammunition
• Hunting and defensive loads
• Precision handloads
• High-volume reloading

At Lake Effect Brass, we process every batch with the same care and attention to detail we would demand for our own reloads.

Mostly factory headstamp. Fully processed. Ready to load.