Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:250 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:1:12.5
Load data in caliber .338 Win Mag. with .338 | 250gr | Nosler AccuBond bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Superformance and Alliant Reloder-17.
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>> | 82% | 53,650 psi | 86% | 2369 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,796 psi | 89% | 2438 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,635 psi | 86% | 2451 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,665 psi | 88% | 2451 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,453 psi | 68% | 2369 fps | 97.6% |
| Accurate 4064 | <<locked>> | 90% | 55,622 psi | 89% | 2480 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,347 psi | 89% | 2569 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 55,854 psi | 90% | 2510 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 53,534 psi | 86% | 2467 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 50,357 psi | 81% | 2503 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,795 psi | 88% | 2464 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,115 psi | 90% | 2434 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,593 psi | 89% | 2625 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 49,879 psi | 80% | 2500 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,737 psi | 86% | 2490 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,099 psi | 87% | 2507 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,085 psi | 87% | 2602 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,139 psi | 79% | 2493 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,451 psi | 65% | 2395 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,150 psi | 72% | 2543 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,593 psi | 89% | 2530 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 54,085 psi | 87% | 2500 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,041 psi | 87% | 2480 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,359 psi | 86% | 2405 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,360 psi | 87% | 2497 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,304 psi | 90% | 2585 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,172 psi | 88% | 2520 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 54,665 psi | 88% | 2569 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 55,216 psi | 89% | 2533 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 86% | 56,434 psi | 90% | 2520 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,707 psi | 85% | 2503 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,912 psi | 90% | 2549 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,810 psi | 88% | 2602 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 57% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,085 psi | 87% | 2474 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 53,185 psi | 85% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,420 psi | 90% | 2497 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,376 psi | 90% | 2484 fps | 98.9% |
| IMR 4350 | <<locked>> | 98% | 54,360 psi | 87% | 2507 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,883 psi | 90% | 2507 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 2559 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 55,477 psi | 89% | 2533 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,795 psi | 88% | 2464 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,811 psi | 89% | 2487 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,303 psi | 89% | 2441 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,202 psi | 90% | 2490 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,405 psi | 89% | 2503 fps | 99.6% |
| Lovex S070 | <<locked>> | 98% | 56,173 psi | 90% | 2533 fps | 99.1% |
| Norma 201 | <<locked>> | 86% | 54,621 psi | 88% | 2461 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,187 psi | 88% | 2457 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,345 psi | 86% | 2497 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,911 psi | 88% | 2552 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 45,194 psi | 72% | 2507 fps | 97.1% |
| Norma URP | <<locked>> | 98% | 54,244 psi | 87% | 2556 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 53,708 psi | 86% | 2520 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 53,113 psi | 85% | 2559 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 55,085 psi | 88% | 2490 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,621 psi | 88% | 2500 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,579 psi | 89% | 2467 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 58% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,172 psi | 88% | 2500 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,563 psi | 87% | 2566 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,983 psi | 87% | 2598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,868 psi | 88% | 2589 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,302 psi | 87% | 2615 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,608 psi | 89% | 2438 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,230 psi | 89% | 2461 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,969 psi | 87% | 2497 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,790 psi | 77% | 2474 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 54,041 psi | 87% | 2480 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,405 psi | 89% | 2503 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,811 psi | 89% | 2487 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,202 psi | 90% | 2490 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,173 psi | 90% | 2533 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,622 psi | 89% | 2549 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,592 psi | 86% | 2470 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,186 psi | 87% | 2487 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,086 psi | 90% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,156 psi | 85% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,709 psi | 89% | 2464 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,340 psi | 76% | 2470 fps | 96.2% |
| Somchem S321 | <<locked>> | 82% | 56,144 psi | 90% | 2497 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,463 psi | 89% | 2398 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 53,011 psi | 85% | 2457 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 54,360 psi | 87% | 2493 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,417 psi | 84% | 2559 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,573 psi | 78% | 2457 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 55,883 psi | 90% | 2359 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,376 psi | 90% | 2382 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,969 psi | 88% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,753 psi | 89% | 2441 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,651 psi | 89% | 2470 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 53,229 psi | 85% | 2503 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 55,274 psi | 89% | 2461 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,737 psi | 86% | 2438 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,811 psi | 89% | 2559 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,744 psi | 72% | 2464 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,214 psi | 85% | 2484 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,463 psi | 89% | 2510 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,665 psi | 88% | 2569 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,187 psi | 58% | 2415 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,070 psi | 87% | 2493 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% | 50,285 psi | 81% | 2326 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,221 psi | 69% | 2274 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,328 psi | 81% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,090 psi | 67% | 2257 fps | 95.4% |
| Accurate 3100 | <<locked>> | 94% | 34,737 psi | 56% | 2228 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 40,901 psi | 66% | 2277 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,052 psi | 48% | 2133 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 46,499 psi | 75% | 2379 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 39,566 psi | 63% | 2247 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 98% | 47,181 psi | 76% | 2451 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,544 psi | 78% | 2379 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,211 psi | 79% | 2352 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,221 psi | 68% | 2415 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 43,903 psi | 70% | 2402 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,204 psi | 63% | 2267 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,148 psi | 68% | 2326 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,472 psi | 49% | 2142 fps | 95.6% |
| Alliant Reloder-17 | 53.9 gr | 80% | 33,924 psi | 54% | 2254 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,166 psi | 74% | 2444 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,484 psi | 42% | 2067 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 31,995 psi | 51% | 2267 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,672 psi | 73% | 2385 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 38,928 psi | 62% | 2274 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 39,740 psi | 64% | 2247 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,140 psi | 80% | 2362 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,427 psi | 76% | 2402 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,489 psi | 84% | 2533 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,740 psi | 64% | 2277 fps | 98% |
| Hodgdon H414 | <<locked>> | 86% | 39,392 psi | 63% | 2323 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 42,873 psi | 69% | 2339 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,934 psi | 75% | 2385 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,007 psi | 45% | 2057 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,004 psi | 69% | 2365 fps | 99.9% |
| Hodgdon Superformance | 62.7 gr | 88% | 41,582 psi | 67% | 2388 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 43% | 1332 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,889 psi | 72% | 2343 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 46,731 psi | 75% | 2369 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,582 psi | 67% | 2277 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,961 psi | 70% | 2297 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 39,943 psi | 64% | 2277 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,870 psi | 62% | 2231 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 29,211 psi | 47% | 2096 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 43,192 psi | 69% | 2352 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 48,544 psi | 78% | 2379 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,701 psi | 73% | 2356 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,325 psi | 74% | 2316 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 41,539 psi | 67% | 2277 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,185 psi | 55% | 2146 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 36,680 psi | 59% | 2218 fps | 95% |
| Norma 201 | <<locked>> | 80% | 45,614 psi | 73% | 2333 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,774 psi | 73% | 2333 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,524 psi | 67% | 2316 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 44,976 psi | 72% | 2402 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 39,494 psi | 63% | 2398 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 30,443 psi | 49% | 2133 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,988 psi | 66% | 2329 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 36,013 psi | 58% | 2264 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 48,341 psi | 78% | 2392 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,979 psi | 77% | 2408 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,083 psi | 84% | 2421 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,963 psi | 43% | 1365 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,972 psi | 64% | 2260 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,454 psi | 71% | 2418 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,085 psi | 58% | 2306 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,879 psi | 51% | 2195 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 34,113 psi | 55% | 2251 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,559 psi | 79% | 2356 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,265 psi | 69% | 2287 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 36,695 psi | 59% | 2224 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 98% | 44,962 psi | 72% | 2428 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 39,740 psi | 64% | 2247 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,185 psi | 55% | 2146 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,701 psi | 73% | 2356 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,539 psi | 67% | 2277 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 36,680 psi | 59% | 2218 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,507 psi | 60% | 2270 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,702 psi | 75% | 2372 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,759 psi | 72% | 2349 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,847 psi | 75% | 2280 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,088 psi | 63% | 2169 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,898 psi | 61% | 2188 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 44,556 psi | 71% | 2425 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 52,518 psi | 84% | 2448 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,485 psi | 75% | 2283 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,499 psi | 75% | 2365 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 37,594 psi | 60% | 2231 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 27,325 psi | 44% | 2096 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 39,958 psi | 64% | 2316 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 52,721 psi | 85% | 2323 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,210 psi | 76% | 2270 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,047 psi | 69% | 2267 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,381 psi | 70% | 2277 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,636 psi | 57% | 2172 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,807 psi | 51% | 2136 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 48,573 psi | 78% | 2372 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,843 psi | 67% | 2274 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,285 psi | 50% | 2136 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 28,282 psi | 45% | 2133 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,488 psi | 50% | 2116 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 48,573 psi | 78% | 2418 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 39,392 psi | 63% | 2323 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,440 psi | 42% | 2136 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,483 psi | 71% | 2356 fps | 99.9% |
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 103 powders for .338 Win Mag. loaded with the .338 | 250gr | Nosler AccuBond. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,625 fps; across all powders the maximum-charge window runs from 1,493 fps to 2,625 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. Hodgdon H4831, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .338 Win Mag. with the .338 | 250gr | Nosler AccuBond they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.