Load Specifications
Load data in caliber .338 Win Mag. with .338 | 250gr | Lehigh Defense Controlled Fracturing bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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% | 56,391 psi | 90% | 2388 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,578 psi | 88% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,244 psi | 87% | 2408 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,968 psi | 85% | 2431 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,114 psi | 87% | 2421 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 37,811 psi | 61% | 2277 fps | 96% |
| Accurate 4064 | <<locked>> | 92% | 54,230 psi | 87% | 2454 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,766 psi | 86% | 2533 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 55,274 psi | 89% | 2487 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 56,362 psi | 90% | 2487 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,476 psi | 87% | 2441 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,172 psi | 88% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,955 psi | 88% | 2598 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,275 psi | 90% | 2507 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,028 psi | 90% | 2388 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,505 psi | 86% | 2484 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,083 psi | 84% | 2536 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,301 psi | 85% | 2572 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,811 psi | 59% | 2310 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,872 psi | 66% | 2448 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,201 psi | 89% | 2507 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 53,055 psi | 85% | 2477 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,403 psi | 86% | 2451 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,304 psi | 90% | 2425 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,476 psi | 86% | 2470 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,709 psi | 89% | 2559 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,129 psi | 88% | 2428 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,217 psi | 90% | 2457 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,230 psi | 87% | 2490 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 98% | 53,592 psi | 86% | 2536 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 96% | 54,462 psi | 87% | 2500 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 88% | 55,811 psi | 89% | 2493 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,153 psi | 77% | 2428 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,216 psi | 89% | 2526 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,317 psi | 87% | 2572 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 57% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,969 psi | 87% | 2457 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,767 psi | 89% | 2470 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,840 psi | 90% | 2470 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,144 psi | 90% | 2461 fps | 98.6% |
| IMR 4198 | <<locked>> | 82% | 56,434 psi | 90% | 2349 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 2474 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,550 psi | 89% | 2480 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,908 psi | 82% | 2480 fps | 99.7% |
| IMR 4895 | <<locked>> | 90% | 54,868 psi | 88% | 2510 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 54,476 psi | 87% | 2441 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,317 psi | 87% | 2425 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,926 psi | 88% | 2464 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,245 psi | 89% | 2425 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 55,593 psi | 89% | 2467 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,433 psi | 87% | 2470 fps | 99.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2503 fps | 98.7% |
| Norma 201 | <<locked>> | 88% | 54,027 psi | 87% | 2438 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,679 psi | 88% | 2438 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,072 psi | 90% | 2516 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 54,128 psi | 87% | 2520 fps | 96.7% |
| Norma URPᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2526 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 52,895 psi | 85% | 2493 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,996 psi | 83% | 2523 fps | 98.8% |
| Ramshot TAC | <<locked>> | 86% | 54,723 psi | 88% | 2467 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,244 psi | 87% | 2480 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,564 psi | 89% | 2448 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,781 psi | 57% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,143 psi | 87% | 2425 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,607 psi | 88% | 2474 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,751 psi | 86% | 2539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,098 psi | 85% | 2572 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,417 psi | 86% | 2556 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,679 psi | 86% | 2585 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 54,853 psi | 88% | 2415 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,433 psi | 87% | 2434 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,939 psi | 85% | 2467 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 53,403 psi | 86% | 2451 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,433 psi | 87% | 2470 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,926 psi | 88% | 2464 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,593 psi | 89% | 2467 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,390 psi | 89% | 2503 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,650 psi | 88% | 2523 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,881 psi | 85% | 2444 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,824 psi | 86% | 2464 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,767 psi | 89% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,970 psi | 90% | 2379 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,810 psi | 88% | 2431 fps | 98.4% |
| Somchem S321 | <<locked>> | 84% | 55,680 psi | 89% | 2474 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,042 psi | 88% | 2379 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,333 psi | 90% | 2484 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 53,229 psi | 85% | 2464 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,471 psi | 76% | 2480 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 44,208 psi | 71% | 2375 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 84% | 55,579 psi | 89% | 2343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,043 psi | 90% | 2362 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,230 psi | 87% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,259 psi | 89% | 2418 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,955 psi | 88% | 2448 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 2520 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 86% | 55,027 psi | 88% | 2441 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,069 psi | 85% | 2418 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,534 psi | 87% | 2526 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,827 psi | 64% | 2372 fps | 98.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,289 psi | 90% | 2503 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,882 psi | 88% | 2487 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,592 psi | 86% | 2536 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,706 psi | 52% | 2306 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,447 psi | 86% | 2470 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% | 46,775 psi | 75% | 2270 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,937 psi | 82% | 2372 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,783 psi | 62% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,035 psi | 74% | 2339 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 44,396 psi | 71% | 2277 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 35,259 psi | 57% | 2228 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,738 psi | 59% | 2201 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 30,647 psi | 49% | 2142 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 43,062 psi | 69% | 2306 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 36,680 psi | 59% | 2182 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,165 psi | 72% | 2313 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 45,237 psi | 73% | 2293 fps | 100% |
| Alliant Power Pro 2000-MR | 51.8 gr | 80% | 39,044 psi | 63% | 2339 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,998 psi | 58% | 2198 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,547 psi | 84% | 2346 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,740 psi | 62% | 2251 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 31,749 psi | 51% | 2159 fps | 95.7% |
| Alliant Reloder-17 | 51 gr | 80% | 30,995 psi | 50% | 2172 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 27,108 psi | 43% | 2077 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 94% | 33,127 psi | 53% | 2280 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,192 psi | 68% | 2313 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 35,317 psi | 57% | 2198 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 41,698 psi | 67% | 2267 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,862 psi | 75% | 2300 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,743 psi | 70% | 2336 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,472 psi | 78% | 2461 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 51,692 psi | 83% | 2388 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,533 psi | 84% | 2415 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,274 psi | 58% | 2201 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 90% | 41,002 psi | 66% | 2339 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 45,136 psi | 72% | 2362 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 43,424 psi | 70% | 2316 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,122 psi | 43% | 2024 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,204 psi | 63% | 2290 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 92% | 43,656 psi | 70% | 2405 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1312 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,684 psi | 67% | 2274 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 42,888 psi | 69% | 2303 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,508 psi | 62% | 2208 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,017 psi | 66% | 2228 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 53,156 psi | 85% | 2313 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 41,756 psi | 67% | 2293 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 40,843 psi | 65% | 2254 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 30,066 psi | 48% | 2110 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,697 psi | 64% | 2277 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 45,165 psi | 72% | 2313 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 50,749 psi | 81% | 2382 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,901 psi | 67% | 2287 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,381 psi | 70% | 2254 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 38,218 psi | 61% | 2208 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 35,346 psi | 57% | 2159 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 37,985 psi | 61% | 2231 fps | 95% |
| Norma 201 | <<locked>> | 80% | 41,930 psi | 67% | 2260 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 42,380 psi | 68% | 2270 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,130 psi | 61% | 2241 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 47,326 psi | 76% | 2421 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 31,560 psi | 51% | 2149 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 37,652 psi | 60% | 2257 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 37,420 psi | 60% | 2280 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,976 psi | 72% | 2323 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,338 psi | 71% | 2336 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,762 psi | 78% | 2356 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 43% | 1342 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,575 psi | 81% | 2379 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 36,811 psi | 59% | 2185 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,683 psi | 65% | 2343 fps | 98.9% |
| ReloadSwiss RS 60 | 51 gr | 80% | 33,040 psi | 53% | 2228 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 32,822 psi | 53% | 2208 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 35,578 psi | 57% | 2267 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,948 psi | 74% | 2293 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,842 psi | 64% | 2218 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 33,330 psi | 53% | 2152 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 41,698 psi | 67% | 2267 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 35,346 psi | 57% | 2159 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,901 psi | 67% | 2287 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,218 psi | 61% | 2208 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 37,985 psi | 61% | 2231 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,418 psi | 55% | 2198 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,004 psi | 69% | 2297 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,568 psi | 67% | 2283 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,511 psi | 70% | 2218 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,027 psi | 58% | 2106 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 39,552 psi | 63% | 2205 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 48,675 psi | 78% | 2382 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,018 psi | 69% | 2221 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,960 psi | 69% | 2297 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 34,171 psi | 55% | 2156 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 24,598 psi | 39% | 2008 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 41,394 psi | 66% | 2326 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 49,240 psi | 79% | 2267 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,874 psi | 70% | 2211 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,334 psi | 63% | 2201 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,205 psi | 64% | 2215 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,605 psi | 52% | 2103 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 30,864 psi | 49% | 2106 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 45,136 psi | 72% | 2310 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 38,421 psi | 62% | 2205 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 32,227 psi | 52% | 2152 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 28,732 psi | 46% | 2139 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,892 psi | 46% | 2041 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 44,802 psi | 72% | 2352 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 38,479 psi | 62% | 2293 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 26,919 psi | 43% | 2133 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,828 psi | 65% | 2283 fps | 99.5% |
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 121 powders for .338 Win Mag. loaded with the .338 | 250gr | Lehigh Defense Controlled Fracturing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,598 fps; across all powders the maximum-charge window runs from 1,470 fps to 2,598 fps. Accurate 3100 gives the best case fill at 100 %, and 121 of the 121 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 250.0 gr projectile in 0.338" calls for a 1:11.0 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .338 Win Mag. with the .338 | 250gr | Lehigh Defense Controlled Fracturing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.