.270 WSM ballistic coefficient chart
G1 and G7 ballistic coefficients for 38 .270 WSM factory loads from 95 to 156 grains, with the manufacturer's muzzle velocity and, where published, bullet length.
| Load | Weight (gr) | G1 BC | G7 BC | Velocity (fps) | Length (in) |
|---|---|---|---|---|---|
| RWS 95gr. EVO Green (2318863) | 95 | 0.292 | - | 3,671 | - |
| Norma 120gr. Kalahari (20169282) | 120 | 0.314 | - | 3,480 | - |
| Federal 130gr. Barnes TSX ( P270WSMD) | 130 | 0.374 | - | 3,280 | 1.224 |
| Federal 130gr. Nosler Accubond (P270WSMA1) | 130 | 0.435 | 0.198 | 3,250 | 1.234 |
| Federal 130gr. Nosler Ballistic Tip (P270WSMB) | 130 | 0.433 | - | 3,300 | 1.220 |
| Federal 130gr. Nosler Partition (P270WSMC) | 130 | 0.466 | - | 3,100 | 1.135 |
| Federal 130gr. Swift Scirocco II (P270WSMSS1) | 130 | 0.450 | - | 3,300 | 1.315 |
| Federal 130gr. Trophy Bonded Tip (P270WSMTT1) | 130 | 0.440 | - | 3,280 | - |
| Federal 130gr. Trophy Copper (P270WSMTC1) | 130 | 0.459 | - | 3,280 | - |
| Geco 130gr. Express (2317838) | 130 | 0.344 | - | 3,280 | - |
| Geco 130gr. Express (2317838) | 130 | 0.344 | - | 3,084 | - |
| Norma 130gr. Ballistic Tip (20169252) | 130 | 0.433 | - | 3,281 | - |
| Norma 130gr. FMJ (20169310) | 130 | 0.365 | - | 3,150 | - |
| RWS 130gr. HIT (2319206) | 130 | 0.385 | - | 3,084 | - |
| Winchester 130-grain Ballistic Silvertip (SBST2705) | 130 | 0.432 | - | 3,275 | - |
| Winchester 130gr. Deer Season XP (X270SDS) | 130 | 0.450 | - | 3,275 | - |
| Winchester 130gr. Extreme Point (P270WSMA1) | 130 | 0.450 | - | 3,275 | - |
| Winchester 130gr. Nosler Accubond (P270WSMA1) | 130 | 0.435 | 0.207 | 3,250 | 1.245 |
| Browning 134gr. BXR (B192127001) | 134 | 0.464 | - | 3,175 | - |
| Federal 136gr. Terminal Ascent (P270WSMTA1) | 136 | 0.493 | 0.247 | 3,240 | 1.354 |
| Federal 136gr. Terminal Ascent (P270WSMTA1) | 136 | 0.508 | - | 3,240 | 1.354 |
| Barnes 140gr. VOR-TX (21559) | 140 | 0.404 | - | 3,135 | - |
| Federal 140gr. Berger Hybrid Hunter ( P270WSMBCH1) | 140 | 0.528 | 0.271 | 3,200 | 1.283 |
| Federal 140gr. Trophy Bonded Tip (P270WSMTT3) | 140 | 0.455 | - | 3,200 | - |
| Geco 140gr. Softpoint (2317823) | 140 | 0.247 | - | 3,100 | - |
| Geco 140gr. Softpoint (2317823) | 140 | 0.247 | - | 3,166 | - |
| Norma 140gr. Tipstrike (20169532) | 140 | 0.480 | - | 3,166 | - |
| Nosler 140gr. AccuBond (60030) | 140 | 0.496 | 0.217 | 3,100 | 1.310 |
| Winchester 140-grain Fail Safe (S270WSMX) | 140 | 0.373 | - | 3,125 | - |
| Winchester 140gr. Nosler Accubond CT (S270WSMCT) | 140 | 0.496 | 0.217 | 3,200 | 1.310 |
| Hornady 145gr. ELD-X Precision Hunter (80558) | 145 | 0.536 | 0.270 | 3,100 | 1.527 |
| Federal 150gr. Fusion ( F270WSMFS1) | 150 | 0.499 | - | 3,060 | 1.240 |
| Norma 150gr. Oryx (20169322) | 150 | 0.373 | - | 3,237 | - |
| RWS 150gr. KS (231 57 50) | 150 | 0.345 | - | 2,952 | - |
| RWS 150gr. KS (231 57 50) | 150 | 0.345 | - | 3,133 | - |
| Winchester 150-grain Power-Point (X270WSM) | 150 | 0.344 | - | 3,150 | - |
| Winchester 150gr. Ballistic Silvertip (SBST2705A) | 150 | 0.496 | - | 3,120 | - |
| Norma 156gr. Vulcan (20169412) | 156 | 0.340 | - | 2,854 | - |
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.