7mm Weatherby Magnum ballistic coefficient chart
G1 and G7 ballistic coefficients for 12 7mm Weatherby Magnum factory loads from 139 to 175 grains, with the manufacturer's muzzle velocity and, where published, bullet length.
| Load | Weight (gr) | G1 BC | G7 BC | Velocity (fps) | Length (in) |
|---|---|---|---|---|---|
| Weatherby 139-grain Soft Point (H 7mm 139 SP) | 139 | 0.392 | - | 3,340 | - |
| Weatherby 140-grain Nosler Partition (N 7mm 140 PT) | 140 | 0.434 | - | 3,303 | 1.160 |
| Weatherby 150-grain Barnes X-Bullet (B 7mm 150 XS) | 150 | 0.488 | - | 3,100 | - |
| Weatherby 150-grain Nosler Ballistic Tip (N 7mm 150 BST) | 150 | 0.494 | - | 3,300 | 1.300 |
| Hornady 154-grain Soft Point (8066) | 154 | 0.434 | - | 3,200 | - |
| Hornady 154-grain SST (8068) | 154 | 0.434 | - | 3,200 | 1.340 |
| Weatherby 154-grain Pointed-Expanding (H 7mm 154 SP) | 154 | 0.433 | - | 3,260 | - |
| Federal 160-grain Trophy Bonded Bear Claw (P7WBT1) | 160 | 0.293 | - | 3,050 | - |
| Federal 160gr. Trophy Bonded Tip (P7WBTT1) | 160 | 0.520 | - | 3,100 | - |
| Weatherby 160-grain Nosler Partition (N 7mm 160 PT) | 160 | 0.475 | - | 3,200 | 1.270 |
| Hornady 175-grain SP (8067) | 175 | 0.463 | - | 2,910 | - |
| Weatherby 175-grain Pointed-Expanding (H 7mm 175 SP) | 175 | 0.462 | - | 3,070 | - |
Using these numbers
A ballistic coefficient describes how well a bullet keeps its speed against air resistance, compared with a standard reference projectile. G7 figures suit long, boat-tailed match and hunting bullets and stay more consistent across velocities; G1 figures are larger numbers for the same bullet and are what most manufacturers have published historically. Use whichever your calculator asks for, but never mix a G1 number with the G7 drag model.
Every load here is in the ballistic calculator's bullet library — search for it to build a range card in one step, then true the velocity against your own chronograph.