.510 | 647gr | Barnes TAC-X
by Barnes
The Barnes TAC-X is a purpose-built tactical bullet featuring all-copper construction designed for military and law enforcement applications. Its unique four-petal design delivers controlled expansion while maintaining 100% weight retention through barriers including auto glass, plywood, drywall, and sheet metal. The grooved body reduces barrel fouling and pressure, while the boat-tail design enhances accuracy at extended ranges. TAC-X bullets are lead-free and California-compliant, making them suitable for training in environmentally sensitive areas. This bullet excels in .223/5.56mm, .308/7.62mm, and .300 Blackout platforms for both suppressed and standard configurations.
Specifications
Weight
647 gr (41.92 g)
Diameter
0.510″ (12.95 mm)
Sectional Density
0.355
BC G1
0.572
Type
TAC-X
Min. Twist
1:22.5
Related Load Recipes
Load recipes using .510 | 647gr | TAC-X are available in the following cartridges:
Similar Bullets
Same-caliber projectiles within ±0.003", ±5gr, ±7.5% length and matching lead content from other brands.
Community Load Data for .510 | 647gr | TAC-X
Loads for .510 | 647gr | TAC-X from our community:
1 loads
| cartridge | Powder | Barrel (in) | Charge (gr) | OAL (in) | Max. Pressure (psi) | Muzzle Velocity (fps) |
|---|---|---|---|---|---|---|
| .500 Jeffery Riml. | IMR 4064 | 24.0 | 90.0 | 3.600 | 44105 (95%) | 2028 |