.284 | 139gr | Hornady CX
by Hornady · See details on brand website
The Hornady ECX bullet is a lead-free, expanding copper alloy projectile engineered for reliable terminal performance and deep penetration. Its sleek, aerodynamic profile ensures high ballistic efficiency, while the distinctive polymer tip enhances accuracy and initiates controlled expansion on impact. Perfect for hunters seeking a non-toxic solution, the ECX bullet is ideal for medium to large game such as deer, antelope, and African plains game, providing excellent energy transfer and consistent results.
Specifications
Weight
139 gr (9.01 g)
Diameter
0.284″ (7.21 mm)
Sectional Density
0.246
BC G1
0.429
Type
CX
Min. Twist
1:7.5
Related Load Recipes
Load recipes using .284 | 139gr | CX are available in the following cartridges:
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Community Load Data for .284 | 139gr | CX
Loads for .284 | 139gr | CX from our community:
6 loads
| cartridge | Powder | Barrel (in) | Charge (gr) | OAL (in) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|
| 7 x 64 Brenneke | Vihtavuori N160 | 22.0 | 47.8 | 3.307 | 47964 (80%) | 2710 |
| 7 x 64 Brenneke | Vihtavuori N160 | 22.0 | 49.0 | 3.307 | 52092 (87%) | 2776 |
| 7 x 64 Brenneke | Vihtavuori N160 | 22.0 | 47.0 | 3.307 | 45448 (76%) | 2664 |
| 7 mm PRC | Reload Swiss RS 70 | 20.0 | ••.• | 3.291 | 51503 (79%) | 2904 |
| 7 mm PRC | Reload Swiss RS 70 | 20.0 | ••.• | 3.291 | 57101 (88%) | 2999 |
| 7 mm PRC | Reload Swiss RS 70 | 20.0 | ••.• | 3.306 | 54041 (83%) | 2956 |