Load Specifications
Bullet Manufacturer:Woodleigh
Bullet Weight:225 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Win Mag. load data
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0
Load data in caliber .338 Win Mag. with .338 | 225gr | Woodleigh PP SN bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 53,359 psi | 86% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,056 psi | 88% | 2552 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,447 psi | 87% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,042 psi | 88% | 2598 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 55,564 psi | 89% | 2546 fps | 96.5% |
| Accurate 4064 | <<locked>> | 94% | 54,230 psi | 87% | 2585 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,763 psi | 80% | 2605 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 55,898 psi | 90% | 2470 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,318 psi | 90% | 2493 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,579 psi | 89% | 2617 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 53,258 psi | 85% | 2570 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,882 psi | 88% | 2575 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,201 psi | 89% | 2553 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,953 psi | 85% | 2621 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,013 psi | 88% | 2725 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,956 psi | 90% | 2634 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,084 psi | 85% | 2486 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,330 psi | 86% | 2607 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,169 psi | 80% | 2607 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,939 psi | 85% | 2697 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,549 psi | 57% | 2362 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,911 psi | 88% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,332 psi | 89% | 2634 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 53,069 psi | 85% | 2604 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 54,723 psi | 88% | 2569 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,664 psi | 86% | 2517 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,766 psi | 86% | 2605 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,680 psi | 89% | 2694 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 86% | 54,708 psi | 88% | 2559 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,173 psi | 90% | 2590 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,360 psi | 87% | 2613 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 54,810 psi | 88% | 2676 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 90% | 56,086 psi | 90% | 2627 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,730 psi | 73% | 2497 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,911 psi | 88% | 2657 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,897 psi | 88% | 2684 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 57% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 56,217 psi | 90% | 2612 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 54,041 psi | 87% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 55,013 psi | 88% | 2585 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 96% | 54,926 psi | 88% | 2559 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 53,505 psi | 86% | 2449 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,241 psi | 81% | 2543 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,753 psi | 89% | 2602 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,888 psi | 69% | 2463 fps | 97.6% |
| IMR 4895 | <<locked>> | 92% | 54,650 psi | 88% | 2636 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 54,882 psi | 88% | 2575 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,027 psi | 88% | 2564 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,042 psi | 88% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,535 psi | 89% | 2551 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 55,593 psi | 89% | 2596 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2593 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,967 psi | 83% | 2573 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 54,317 psi | 87% | 2567 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,766 psi | 88% | 2570 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,101 psi | 90% | 2646 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,473 psi | 81% | 2594 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 52,852 psi | 85% | 2621 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,892 psi | 78% | 2589 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 55,288 psi | 89% | 2594 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,607 psi | 88% | 2612 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,970 psi | 90% | 2578 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,013 psi | 58% | 1582 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,607 psi | 88% | 2560 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,027 psi | 88% | 2598 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,388 psi | 86% | 2668 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 52,765 psi | 85% | 2699 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,647 psi | 81% | 2623 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2646 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 88% | 55,477 psi | 89% | 2551 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,723 psi | 88% | 2564 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,130 psi | 90% | 2637 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 54,723 psi | 88% | 2569 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,275 psi | 90% | 2593 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,042 psi | 88% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,593 psi | 89% | 2596 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,793 psi | 83% | 2572 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,201 psi | 87% | 2532 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,621 psi | 88% | 2651 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,998 psi | 87% | 2507 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,359 psi | 86% | 2570 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,954 psi | 87% | 2593 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,275 psi | 90% | 2511 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,115 psi | 90% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 2548 fps | 97.3% |
| Somchem S321 | <<locked>> | 86% | 56,188 psi | 90% | 2610 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,390 psi | 89% | 2511 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,968 psi | 85% | 2565 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 53,330 psi | 86% | 2591 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,875 psi | 72% | 2552 fps | 99.9% |
| Unknown powderᴾ | <<locked>> | 100% | 55,477 psi | 89% | 2652 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 86% | 55,158 psi | 88% | 2470 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,637 psi | 89% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,186 psi | 87% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,317 psi | 87% | 2540 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2532 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 2628 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 54,694 psi | 88% | 2583 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,969 psi | 87% | 2568 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,101 psi | 90% | 2670 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,275 psi | 60% | 2430 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2579 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,651 psi | 89% | 2629 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,810 psi | 88% | 2676 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,317 psi | 89% | 2623 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 44,382 psi | 71% | 2362 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,399 psi | 78% | 2461 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,014 psi | 59% | 2290 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,989 psi | 67% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 48,863 psi | 78% | 2448 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 34,998 psi | 56% | 2280 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,201 psi | 56% | 2349 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 52,533 psi | 84% | 2428 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,939 psi | 85% | 2451 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,683 psi | 65% | 2380 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 34,751 psi | 56% | 2245 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,728 psi | 69% | 2392 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,235 psi | 68% | 2383 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,719 psi | 80% | 2572 fps | 99.8% |
| Alliant Power Pro 2000-MR | 51.9 gr | 80% | 36,724 psi | 59% | 2395 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,924 psi | 54% | 2263 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,096 psi | 80% | 2447 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,550 psi | 59% | 2319 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,129 psi | 58% | 2362 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,314 psi | 50% | 2276 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,719 psi | 49% | 2264 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,561 psi | 83% | 2428 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,581 psi | 63% | 2379 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 33,446 psi | 54% | 2267 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 47,456 psi | 76% | 2473 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,759 psi | 72% | 2384 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,060 psi | 66% | 2408 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,078 psi | 72% | 2533 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 45,339 psi | 73% | 2429 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,591 psi | 84% | 2545 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,680 psi | 59% | 2314 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 44,976 psi | 72% | 2521 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,031 psi | 66% | 2391 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,067 psi | 50% | 2221 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,824 psi | 56% | 2316 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 96% | 47,123 psi | 76% | 2570 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,579 psi | 59% | 2290 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 37,086 psi | 59% | 2333 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,982 psi | 54% | 2224 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 90% | 46,064 psi | 74% | 2422 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,444 psi | 81% | 2410 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,282 psi | 76% | 2497 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,557 psi | 75% | 2461 fps | 95.5% |
| IMR 4831 | <<locked>> | 94% | 34,882 psi | 56% | 2323 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 37,405 psi | 60% | 2346 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 42,728 psi | 69% | 2390 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 48,124 psi | 77% | 2469 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,363 psi | 63% | 2363 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 41,249 psi | 66% | 2328 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 36,201 psi | 58% | 2281 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 40,277 psi | 65% | 2360 fps | 95.5% |
| Lovex S070 | <<locked>> | 94% | 43,062 psi | 69% | 2430 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,045 psi | 64% | 2342 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 40,030 psi | 64% | 2350 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,940 psi | 58% | 2309 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 35,868 psi | 58% | 2351 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 35,346 psi | 57% | 2318 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 96% | 42,728 psi | 69% | 2488 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 42,525 psi | 68% | 2390 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,930 psi | 67% | 2413 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,166 psi | 74% | 2435 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 42% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,022 psi | 77% | 2467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,467 psi | 68% | 2399 fps | 95.3% |
| ReloadSwiss RS 52 | 50.3 gr | 80% | 37,840 psi | 61% | 2406 fps | 97.2% |
| ReloadSwiss RS 60 | 51.1 gr | 80% | 31,169 psi | 50% | 2283 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,128 psi | 56% | 2363 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,348 psi | 61% | 2425 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 43,888 psi | 70% | 2382 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,130 psi | 61% | 2298 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,401 psi | 50% | 2214 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 47,456 psi | 76% | 2473 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,277 psi | 65% | 2360 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,363 psi | 63% | 2363 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,201 psi | 58% | 2281 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 43,062 psi | 69% | 2431 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,633 psi | 81% | 2483 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,401 psi | 52% | 2256 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,923 psi | 82% | 2464 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,756 psi | 65% | 2366 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,218 psi | 63% | 2352 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,611 psi | 67% | 2305 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,345 psi | 55% | 2185 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,339 psi | 73% | 2407 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 45,890 psi | 74% | 2463 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,118 psi | 66% | 2308 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,306 psi | 65% | 2364 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 32,503 psi | 52% | 2224 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 26,571 psi | 43% | 2157 fps | 95.2% |
| Unknown powder | <<locked>> | 88% | 36,840 psi | 59% | 2356 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 46,253 psi | 74% | 2353 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,102 psi | 63% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,246 psi | 60% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,492 psi | 60% | 2287 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 27,688 psi | 44% | 2095 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 86% | 34,606 psi | 55% | 2287 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 44,962 psi | 72% | 2438 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,130 psi | 60% | 2305 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 34,751 psi | 56% | 2325 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 32,474 psi | 52% | 2331 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,312 psi | 47% | 2141 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 45,136 psi | 72% | 2480 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,976 psi | 72% | 2521 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,921 psi | 77% | 2518 fps | 99.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 118 powders for .338 Win Mag. loaded with the .338 | 225gr | Woodleigh PP SN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,725 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,725 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .338 Win Mag. with the .338 | 225gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.