The Fiocchi Range Dynamics Subsonic (57SUB62) delivers 50 rounds of 5.7x28mm ammunition loaded with a 62-grain full metal jacket bullet at 1050 fps, purpose-built for suppressed and unsuppressed shooting in threaded-barrel 5.7 pistols and carbines where a quieter, heavier subsonic 5.7x28 load is the primary goal. Packaged 50 rounds per box with 10 boxes per case, the 57SUB62 is the go-to training and range load for PS90, Smith and Wesson 5.7, Ruger 57, and PSA Rock owners running suppressors or seeking a reduced-report option for indoor range use.
Key Features
- Part number: 57SUB62
- Caliber: 5.7x28mm
- Bullet weight: 62 grains
- Bullet type: Full metal jacket
- Muzzle velocity: 1050 fps
- Muzzle energy: 152 ft-lbs
- Case material: Brass
- Primer type: Boxer
- Rounds per box: 50
- Boxes per case: 10
- Series: Range Dynamics
Special Features
- At 62 grains, this bullet is more than twice the weight of standard 28 to 40-grain 5.7x28mm loads, which generates the back pressure necessary to cycle the action reliably at subsonic velocities in pistol-length platforms without requiring a modified buffer or action tuning.
- The 1050 fps rated velocity keeps the round consistently below the speed of sound threshold, eliminating the supersonic crack that suppressor use cannot silence and producing the cleanest, quietest report achievable from a 5.7x28mm platform.
- Brass case construction and Boxer primer allow the 57SUB62 to be reloaded by handloaders who want to extend the life of their brass and experiment with subsonic 5.7 load development beyond factory offerings.
- Fiocchi manufactured this load with the current generation of threaded-barrel 5.7 pistols specifically in mind, including the Smith and Wesson 5.7 and PSA Rock, ensuring reliable feeding and cycling compatibility across the platform spectrum.
Practical Benefits
- The subsonic velocity and FMJ construction make the 57SUB62 ideal for indoor range sessions where minimizing report benefits both the shooter and other range occupants, with or without a suppressor attached.
- Compatible with all standard 5.7x28mm firearms including the FN PS90, FN Five-seveN, Ruger 57, Smith and Wesson 5.7, and PSA Rock, the 57SUB62 works across your entire 5.7 collection without platform-specific concerns.
- The 10-box case format gives you 500 rounds per case, reducing per-round cost and keeping your training supply stocked through extended range schedules or competition prep cycles.
- Whether you run a suppressor on every outing or simply want the quietest unsuppressed 5.7 load available, your Fiocchi Range Dynamics Subsonic (57SUB62) gives you a consistent, brass-cased training round that cycles cleanly and hits quietly every time.
The Fiocchi Range Dynamics Subsonic (57SUB62) in 5.7x28mm is a dependable option for the suppressor-equipped 5.7 shooter or indoor range enthusiast who wants a reliable, brass-cased, heavy-bullet subsonic load built specifically for the modern threaded-barrel 5.7 platform.
| CALIBER | 5.7X28MM |
| MANUFACTURER | FIOCCHI |