300 AAC Black Out 220gr Subs Ammo 50 Rounds

Premium, American-Made 300 Blackout Ammunition
A fan favorite, our SHUSH Subsonic 300 Blackout is engineered for maximum performance in suppressed rifles—delivering clean, consistent, and reliable shots without breaking the bank. Built for shooters who demand quiet precision without sacrificing quality.

he 300 Blackout cartridge—also known as 300 AAC, 300 AAC Blackout, 300 BLK, or simply Blackout—was originally designed for suppressed firearms using heavy 220 grain projectiles. Over the past decade, it has proven to be a reliable and effective cartridge for thin-skinned game at distances of 100 yards and under.

Due to its lower velocity, expansion is reduced compared to lighter supersonic loads—but the dramatic drop in decibels makes it a top choice for suppressed shooting. Our SHUSH 220gr Subsonic ammunition is optimized for suppressed AR-15 platforms but performs just as well in bolt-action or single-shot rifles.

For best cycling and reliability in semi-auto systems, we recommend pairing this ammo with a suppressor.

Brass Kisses runs a true “like-new” remanufacturing process—using new projectiles, powder, and primers to deliver factory-level performance trusted by serious shooters. Every cartridge case is rigorously inspected for defects.

Our fully automated Scharch Range Master systems clean and pressure-check each case for debris, splits, or cracks. Spent primers are removed, flash holes cleared, and primer pockets reamed to accept fresh primers. From there, cases are acid-washed and resized using proprietary Brass Kisses machinery, ensuring commercial-grade dimensions that meet strict S.A.A.M.I. specifications.

About Our Ammunition

All Brass Kisses ammunition is proudly loaded in-house using state-of-the-art Alpha, Camdex and Ammo Load Mark X (pistol) and Mark L (rifle) systems. We use only premium components and run every batch through our industry-leading 16-point quality control process to ensure flawless, consistent performance—round after round.

Loaded by us. Trusted by shooters. Guaranteed by Brass Kisses.

Key Information:

IF ITS IN STOCK, ITS AVAILABLE TO SHIP!!

16pt QC Process on Ammunition

100% guarantee on all rounds