.338 Winchester Magnum ballistic coefficient chart
G1 and G7 ballistic coefficients for 39 .338 Winchester Magnum factory loads from 185 to 275 grains, with the manufacturer's muzzle velocity and, where published, bullet length.
| Load | Weight (gr) | G1 BC | G7 BC | Velocity (fps) | Length (in) |
|---|---|---|---|---|---|
| Hornady 185gr. GMX Superformance (82226) | 185 | 0.420 | - | 3,080 | 1.424 |
| Federal 200gr. Trophy Bonded Tip (P338TT2) | 200 | 0.440 | - | 2,930 | - |
| Hornady 200gr. SST Superformance (82223) | 200 | 0.455 | - | 3,030 | 1.316 |
| Remington 200-grain Nosler Ballistic Tip (PRT338WB) | 200 | 0.415 | - | 2,950 | 1.340 |
| Winchester 200-grain Ballistic Silvertip (SBST338) | 200 | 0.415 | - | 2,950 | 1.340 |
| Winchester 200-grain Power-Point (X3381) | 200 | 0.308 | - | 2,960 | - |
| Barnes 210gr. VOR-TX (21575) | 210 | 0.482 | - | 2,865 | - |
| Federal 210-grain Nosler Partition (P338A2) | 210 | 0.401 | - | 2,830 | - |
| Federal 210gr. Nosler Partition (P338A2) | 210 | 0.398 | - | 2,830 | 1.200 |
| Remington 210-grain Nosler Partition (PRP338WC) | 210 | 0.400 | - | 2,830 | 1.200 |
| Sologne 213gr. GPA | 213 | 0.268 | - | 2,788 | - |
| Barnes 225gr. VOR-TX (21542) | 225 | 0.514 | - | 2,800 | - |
| Federal 225-grain Barnes XLC Coated (P338H) | 225 | 0.427 | - | 2,800 | - |
| Federal 225-grain Speer Hot-Cor SP (338ES) | 225 | 0.420 | - | 2,780 | - |
| Federal 225-grain Trophy Bonded Bear Claw - HE (P338T2) | 225 | 0.371 | - | 2,940 | - |
| Federal 225-grain Trophy Bonded Bear Claw (P338T1) | 225 | 0.373 | - | 2,800 | - |
| Federal 225gr. Fusion (F338FS1) | 225 | 0.486 | - | 2,850 | - |
| Federal 225gr. Nosler Accubond (P338A1) | 225 | 0.550 | - | 2,800 | 1.450 |
| Federal 225gr. Trophy Copper (P338TC1) | 225 | 0.480 | - | 2,800 | - |
| Hornady 225-grain SP - Heavy Magnum (8505) | 225 | 0.398 | - | 2,950 | - |
| Hornady 225gr. GMX Outfitter (82339) | 225 | 0.470 | - | 2,800 | - |
| Hornady 225gr. SST Superformance (82233) | 225 | 0.515 | - | 2,840 | 1.428 |
| Norma 225-grain TXP Bullet (18500) | 225 | 0.384 | - | 2,740 | - |
| Norma 225gr. FMJ (20185100) | 225 | 0.499 | - | 2,657 | - |
| PMC 225-grain Barnes-XLC (338XLA) | 225 | 0.475 | - | 2,600 | - |
| Remington 225-grain Pointed Soft Point Core-Lokt (R338W1) | 225 | 0.435 | - | 2,780 | - |
| Remington 225-grain Swift A-Frame PSP (RS338WA) | 225 | 0.337 | - | 2,785 | - |
| Hornady 230gr. ELD-X Precision Hunter (82222) | 230 | 0.616 | 0.310 | 2,810 | - |
| Norma 230gr. Oryx (20185112) | 230 | 0.370 | - | 2,756 | - |
| Winchester 230-grain Fail Safe (S338XA) | 230 | 0.437 | - | 2,780 | - |
| A2 250-grain Nosler Partition | 250 | 0.677 | - | 2,700 | - |
| A2 250-grain Triad | 250 | 0.304 | - | 2,700 | - |
| Federal 250-grain Nosler Partition - HE (P338D) | 250 | 0.476 | - | 2,800 | 1.375 |
| Federal 250-grain Nosler Partition (P338B2) | 250 | 0.471 | - | 2,660 | 1.375 |
| Remington 250-grain Pointed Soft Point Core-Lokt (R338W2) | 250 | 0.432 | - | 2,660 | - |
| Sako 250gr. HAMMERHEAD (211F) | 250 | 0.342 | - | 2,444 | - |
| Speer 250-grain Grand Slam (24511) | 250 | 0.431 | - | 2,680 | 1.225 |
| Winchester 250-grain Partition Gold (SPG338WM) | 250 | 0.480 | - | 2,650 | - |
| Sako 275gr. TWINHEAD II (452F) | 275 | 0.469 | - | 2,378 | - |
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.