7mm Remington Ultra Magnum ballistic coefficient chart
G1 and G7 ballistic coefficients for 10 7mm Remington Ultra Magnum factory loads from 140 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) |
|---|---|---|---|---|---|
| Remington 140-grain Nosler Partition (PR7UM2) | 140 | 0.434 | - | 3,425 | 1.160 |
| Remington 140-grain Pointed Soft Point Core-Lokt (PR7UM1) | 140 | 0.408 | - | 3,425 | - |
| Remington 140gr. Core-Lokt Soft Point (R7UM1-P1) | 140 | 0.409 | - | 3,000 | - |
| Barnes 145gr. VOR-TX LR (28985) | 145 | 0.486 | - | 3,350 | 1.422 |
| Remington 150gr. Barnes TSX BT (HTP7UM) | 150 | 0.450 | - | 3,250 | 1.433 |
| Remington 150gr. Swift Scirocco Bonded (PRSC7UM1) | 150 | 0.533 | - | 3,325 | - |
| Nosler 160gr. Accubond (60048) | 160 | 0.531 | 0.236 | 3,225 | 1.407 |
| Nosler 160gr. Partition (18705) | 160 | 0.475 | - | 3,225 | 1.270 |
| Remington 160-grain Nosler Partition (PR7UM3) | 160 | 0.475 | - | 3,200 | 1.270 |
| Nosler 175gr. ABLR (60120) | 175 | 0.648 | 0.326 | 3,040 | 1.510 |
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.