Subsonic Performance Engineered for Suppressed Shooting
Winchester Super Suppressed 400 Legend ammunition (SUP400) delivers purpose-built subsonic performance for shooters using suppressors. Loaded with a heavy 300-grain open tip bullet traveling at 1060 fps, this ammunition stays below the speed of sound to maximize noise reduction while maintaining effective terminal performance. Engineered for cleaner operation with reduced barrel and suppressor fouling, the Super Suppressed line combines Winchester's legendary reliability with modern suppressor technology for hunters and shooters who demand quiet, accurate performance in straight-wall cartridge states.
Key Features
- True Subsonic Velocity: 1060 fps muzzle velocity keeps bullets below the speed of sound, eliminating the supersonic crack for maximum noise reduction when used with suppressors. Still delivers 748 ft-lbs of energy at the muzzle for effective medium game hunting performance.
- Encapsulated Bullet Base: Copper jacket completely encloses the base of the lead core, significantly reducing lead fouling in both barrels and suppressors. This design means less cleaning, longer suppressor life, and more consistent accuracy over extended shooting sessions.
- Optimized for Suppressor Use: Specially formulated powder load produces cleaner burning with reduced fouling and carbon buildup in suppressors. Works reliably in both suppressed and non-suppressed firearms, though noise reduction is maximized with a suppressor.
- Heavy 300-Grain Open Tip Bullet: Purpose-designed projectile weight maintains subsonic velocities while providing excellent stability and accuracy. Open tip design ensures consistent expansion and terminal performance on medium game at subsonic speeds.
- High Ballistic Coefficient: 0.318 BC provides superior downrange energy retention and flatter trajectory compared to lighter subsonic loads, extending effective range while maintaining subsonic performance.
- Reduced Recoil: Subsonic velocities generate significantly less recoil than standard 400 Legend loads, improving shooter comfort and follow-up shot speed while reducing muzzle rise for faster target reacquisition.
- Consistent Accuracy: Precision-loaded with tight tolerances for reliable shot-to-shot consistency. Trusted for target shooting, range training, and hunting applications where quiet operation is essential.
- Brass Cases with Boxer Primers: High-quality reloadable brass cases and reliable Boxer primers ensure consistent ignition and reliable function in all weather conditions.
Technical Specifications
- Manufacturer: Winchester Ammunition
- Part Number: SUP400
- UPC: 020892232365
- Model: Super Suppressed
- Caliber: 400 Legend
- Bullet Weight: 300 Grains
- Bullet Type: Open Tip Range Subsonic
- Ballistic Coefficient: 0.318
- Muzzle Velocity: 1060 fps (subsonic)
- Muzzle Energy: 748 ft-lbs
- Case Type: Brass
- Primer Type: Boxer
- Rounds per Box: 20
- Boxes per Case: 10
- Total Rounds per Case: 200
- Casing Length: 1.65 inches
- Made In: USA
Ballistics Performance
At 50 yards: 1022 fps velocity, 696 ft-lbs energy, 0.0" drop. At 100 yards: 989 fps, 652 ft-lbs energy, -6.8" drop. At 150 yards: 960 fps, 614 ft-lbs energy, -22.4" drop. At 200 yards: 934 fps, 581 ft-lbs energy, -47.6" drop. Ballistics data generated from 20-inch barrels. Note: Decibel levels approximately 6% lower than standard supersonic ammunition of the same caliber when used with a suppressor.
Compatibility
Designed for use in all 400 Legend chambered rifles and carbines. Optimized for firearms equipped with suppressors but functions reliably in non-suppressed firearms as well. The 400 Legend is a straight-walled cartridge legal for hunting in states with straight-wall-only regulations including Ohio, Michigan, Indiana, and Iowa. Ideal for bolt-action rifles, AR-15 platform rifles, and single-shot firearms chambered in 400 Legend.
What's Included
- One (1) 20-Round Box of Winchester Super Suppressed Ammunition
Ideal For
Perfect for suppressed hunting of whitetail deer, hogs, and black bear in straight-wall cartridge states. Excellent choice for shooters seeking maximum noise reduction for backyard and suburban shooting ranges where sound mitigation is critical. Ideal for hunters who want to protect their hearing without wearing electronic earmuffs, or those hunting near residential areas where reduced report is essential. Also well-suited for training and target practice with suppressors, predator hunting, and tactical applications requiring stealth. The heavy subsonic bullet provides excellent terminal performance on medium game within 200 yards while keeping noise to an absolute minimum.
Why Choose Super Suppressed?
Winchester developed the Super Suppressed line specifically for the growing community of suppressor users who demand ammunition engineered for quiet operation without sacrificing reliability or accuracy. The encapsulated bullet base design reduces harmful lead exposure in suppressors, extending service life and reducing maintenance frequency. Clean-burning powder formulation means you'll spend less time cleaning your suppressor and more time shooting. Whether you're hunting in states requiring straight-walled cartridges or simply want the quietest possible shooting experience, Winchester Super Suppressed 400 Legend delivers professional-grade performance backed by over 150 years of ammunition manufacturing excellence.
About Winchester Ammunition
Winchester Ammunition has been the industry leader in ammunition innovation since 1866. Trusted by hunters, target shooters, law enforcement, and military personnel worldwide, Winchester continues to push the boundaries of ammunition technology. The Super Suppressed line represents Winchester's commitment to meeting the evolving needs of modern shooters who use suppressors for hearing protection, reduced recoil, and improved accuracy. Made in the USA with stringent quality control, Winchester ammunition delivers the consistent performance and reliability that generations of shooters have trusted.
