Name: EcoBullet Shadow .300 Blackout 220gr TMJ Subsonic Ammunition
Brand: EcoBullet
SKU: EB-300BLK-220-TMJ-50
Price: 54.99 USD
Availability: PreOrder

Use Case

Designed for suppressed platforms and subsonic applications

The EcoBullet Shadow is our newest and most specialized round — a 300 Blackout 220gr subsonic designed specifically for suppressed shooting, tactical training, and quiet applications. At 220 grains, this heavy projectile stays below the speed of sound, eliminating the supersonic crack and delivering the quiet performance that 300 Blackout was built for.

Whether you are running a suppressed SBR, training in environments where noise discipline matters, or simply prefer the smooth recoil impulse of a heavy subsonic round, the Shadow delivers. Paired with lead-free primers and new-production brass, this is the premium subsonic option for shooters who demand both performance and responsibility.

Note: Designed for suppressed platforms and subsonic applications. The 220gr projectile is optimized for barrel twist rates common in 300 Blackout platforms (typically 1:7 or 1:8). For best results, use with a quality suppressor rated for 300 Blackout.

Sustainability

Premium performance, zero compromise

Subsonic shooters often fire in enclosed or indoor environments where lead exposure from standard primers is at its worst. The low velocity of subsonic rounds means less ventilation at the muzzle, concentrating primer residue in the shooter's breathing zone. The Shadow eliminates this concern entirely with lead-free primer chemistry.

Every Shadow round uses new-production brass and is manufactured in CO2-neutral operations. You get a premium, specialized round that is as responsible as it is effective — without paying the environmental cost that comes with conventional subsonic ammunition.

0%

Lead in primers

220gr

Heavy subsonic projectile

CO2

CO2-neutral ops

Product Details

The Silent, Clean Alternative for Suppressed Shooting

The EcoBullet Shadow 300 Blackout 220gr TMJ Subsonic is our most technically sophisticated round — designed for the specialized world of suppressed firearms and subsonic applications. At 220 grains, this lead-free ammunition travels below the speed of sound, eliminating the supersonic crack that would otherwise defeat the purpose of using a suppressor in the first place.

The 300 Blackout was engineered from the ground up for suppressed subsonic use, and EcoBullet Shadow is the only non-toxic ammunition that fully realizes that potential. With lead-free primers and TMJ construction sealing the bullet base, Shadow eliminates both the lead primer residue that accumulates in suppressed firearms and the lead vapor from exposed bullet bases. The result is the quietest, cleanest suppressed shooting experience available.

At approximately 1,010 feet per second and around 500 foot-pounds of muzzle energy, this eco-friendly ammunition delivers solid terminal performance for training and defensive applications while maintaining subsonic velocities across all standard barrel lengths. The 220-grain projectile is optimized for the common 1:7 or 1:8 twist rates found in most 300 Blackout barrels, ensuring consistent accuracy and proper bullet stabilization.

For tactical trainers, suppressor enthusiasts, and anyone running suppressed short-barrel rifles, this non-toxic training ammunition removes the health liability of lead exposure in confined or repeated-shooting environments — while delivering the premium performance that justifies the investment in a suppressor in the first place.

Frequently Asked Questions