Description
300 Blackout 125 grain TMK ammo from Black Hills gives precision rifle shooters a match-focused .300 AAC Blackout load in a 500-round case. Each D300WHISPERN3 round uses a 125-grain Sierra Tipped MatchKing bullet with Boxer-primed brass casing and Black Hills’ new-rifle ammunition construction.
Black Hills lists this load at 2,100 fps with 1,224 ft-lbs of muzzle energy from a 16-inch test barrel. The Sierra Tipped MatchKing projectile is built for accuracy, ballistic consistency, and long-range target performance in compatible .300 Blackout rifles.
Each case includes 25 boxes of 20 rounds, making it useful for zero confirmation, precision range work, and match preparation. The Boxer-primed brass cases also add value for shooters who save reloadable brass after range use.
Compared with expanding .300 Blackout hunting ammunition, this Black Hills D300WHISPERN3 load is better positioned for target use because Sierra does not recommend MatchKing or Tipped MatchKing bullets for most hunting applications. For related options, browse 300 AAC Blackout Ammo, Bulk Rifle Ammo, and Black Hills Ammunition.
Key Features:
- Caliber: .300 AAC Blackout / 300 Blackout
- Bullet Weight: 125 Grain
- Bullet Type: Sierra Tipped MatchKing / STMK
- Manufacturer: Black Hills Ammunition
- Manufacturer SKU: D300WHISPERN3
- UPC: 612710131976
- Case Type: Brass
- Primer: Boxer
- Corrosive: No
- Reloadable: Yes
- Muzzle Velocity: 2,100 fps
- Muzzle Energy: 1,224 ft-lbs
- Ballistic Coefficient: .338 G1
- Test Barrel: 16 inches
- Quantity: 500 Rounds
- Packaging: 25 boxes of 20 rounds
- Best Use: Precision target shooting, range confirmation, match preparation
Product Specifications:
| Specification | Details |
|---|---|
| Product Name | 300 AAC Blackout – 125 gr Sierra TMK – Black Hills D300WHISPERN3 – 500 Rounds |
| Caliber | .300 AAC Blackout / 300 Blackout |
| Manufacturer | Black Hills Ammunition |
| Manufacturer SKU | D300WHISPERN3 |
| UPC | 612710131976 |
| Bullet Weight | 125 Grain |
| Bullet Type | Sierra Tipped MatchKing / STMK |
| Case Type | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Muzzle Velocity | 2,100 fps |
| Muzzle Energy | 1,224 ft-lbs |
| Ballistic Coefficient | .338 G1 |
| Test Barrel | 16 inches |
| Box Quantity | 20 rounds |
| Case Quantity | 500 rounds |
| Case Packaging | 25 boxes of 20 rounds |
| Best Use | Precision target shooting, range confirmation, match preparation |
| Buyer Note | Sierra MatchKing and Tipped MatchKing bullets are designed for target accuracy and are not recommended by Sierra for most hunting applications |
