.300 Whisper
.300 Whisper Ammo For Sale - Best Collection With Top Venders
.300 Whisper is also known as .300 Fireball or .300-221. The .300 whisper rifle chamber results in a slightly sharper shoulder. The .300 AAC Blackout has succeeded as a commercial cartridge while the Whisper never achieved full acceptance.
.300 Whisper ammo is a CIP standard, is one of many cartridges designed to shoot heavier bullets (200–250 grains) at subsonic velocities.
The 300 AAC Blackout is the most successful 30 caliber cartridge with these design parameters and been widely accepted, whereas the .300 Whisper has fallen into disuse.
About: .300 Whisper
- Type: Rifle
- Place of origin: United States
Specifications
- Parent case: .221 Fireball/.223 Remington
- Case type: Rimless, Bottleneck
- Bullet diameter: 7.82 mm (0.308 in)
- Neck diameter: 8.46 mm (0.333 in)
- Shoulder diameter: 9.14 mm (0.360 in)
- Base diameter: 9.54 mm (0.376 in)
- Rim diameter: 9.60 mm (0.378 in)
- Rim thickness: 1.14 mm (0.045 in)
- Case length: 34.90 mm (1.374 in)
- Overall length: 57.00 mm (2.244 in)
- Primer Type: Small rifle
Ballistic performance
| Bullet mass/type | Velocity | Energy |
|---|---|---|
| 220 gr (14 g) JHP | 1,040 ft/s (320 m/s) | 529 ft⋅lbf (717 J) |
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