The Fiocchi Range Dynamics Subsonic 5.7x28mm 62-grain Full Metal Jacket (FMJ) load is a specialized centerfire cartridge engineered specifically for suppressed handguns and personal defense weapons (PDWs). The primary frustration with training on the 5.7x28mm platform is its inherent high-velocity nature. Standard rounds scream downrange at supersonic speeds, creating a sharp, loud ballistic crack that a silencer simply cannot eliminate. Fiocchi completely wipes out this training bottleneck by utilizing a heavy-for-caliber 62-grain projectile paired with a specially tuned propellant blend, keeping your shots remarkably quiet while maintaining high-volume shooting fun.
The technical advantage focuses on strict velocity stabilization and internal pressure control. By raising the bullet weight to a heavy 62 grains and loading it over a precise, slower-burning powder charge, Fiocchi stabilizes the muzzle velocity at a steady 1,025 FPS. This stays safely below the speed of sound, completely eliminating the supersonic shockwave downrange. This formula is meticulously balanced to ensure there is still plenty of backpressure to reliably cycle semi-automatic slides and gas-operated carbines, all while keeping your suppressor running efficiently and minimizing dirty gas blowback into your action.
Slinging its heavy 62-grain training payload at a quiet 1,025 FPS, this Range Dynamics round delivers an incredibly soft recoil impulse and a minimal acoustic report. To ensure flawless reliability over long, high-volume range sessions, the streamlined FMJ nose profile is optimized to glide effortlessly through the 5.7x28mm's unique bottleneck magazine geometries without hanging up. Built with premium Boxer-primed brass cases and ultra-clean-burning powders, this 50-round box provides the crisp ignition, uniform velocity, and reloadable quality required for elite, quiet range work.
Key Benefits
- Optimized Subsonic Velocity: Engineered to fly at a steady 1,025 FPS to eliminate the loud supersonic crack, making it the perfect match for suppressed firearms.
- Heavy-for-Caliber 62gr Bullet: Boosts projectile mass to safely lower velocities while retaining the necessary backpressure for reliable semi-automatic cycling.
- Streamlined FMJ Geometry: Smooth full metal jacket profile ensures glass-smooth feeding and prevents nose hang-ups in high-capacity 5.7x28mm magazines.
- Reduced Gas & Fouling: Loaded with premium, clean-burning propellants to minimize carbon buildup inside your suppressor and firearm action.
Technical Specification
- Ballistics: 5.7x28mm | 1,025 FPS Muzzle Velocity | Subsonic Training Profile
- Projectile: 62 Grain | Full Metal Jacket (FMJ) | Solid Lead Core | Copper-Jacketed
- Case/Primer: Premium Brass Case | Non-Corrosive Boxer Primed | Slower-Burning Propellant | Reloadable
- Logistics: 50 Rounds Per Box | Range Dynamics Subsonic Series
- Dimensions: 5.7x28mm | ~0.85 lbs Per Box | SKU: FIO57SUB62
- Application: Suppressed Range Training, Tactical Practice, and High-Volume Plinking | 5.7mm Handguns & Carbines
- Standards: SAAMI Compliant | Factory Precision Subsonic Quality Benchmarks
When you need a subsonic 5.7x28mm that cycles reliably and keeps your suppressed system running clean, this Fiocchi load delivers consistent, repeatable performance. Trust SMKW to supply ammunition that meets technical demands without compromise—stock up now and keep your training efficient and controlled.
