Load Specifications
Load data in caliber .338 Win Mag. with .338 | 260gr | CutEdge Maximus 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 Power Pro 2000-MR, 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>> | 84% | 54,447 psi | 87% | 2316 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,217 psi | 90% | 2385 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,796 psi | 89% | 2375 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,694 psi | 88% | 2402 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,709 psi | 89% | 2395 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,508 psi | 63% | 2264 fps | 96.9% |
| Accurate 4064 | <<locked>> | 92% | 55,825 psi | 90% | 2421 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,970 psi | 90% | 2510 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 53,505 psi | 86% | 2415 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 54,578 psi | 88% | 2415 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2402 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,014 psi | 90% | 2411 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,330 psi | 86% | 2339 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,011 psi | 85% | 2523 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,273 psi | 87% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,940 psi | 88% | 2454 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2513 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,013 psi | 88% | 2546 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2392 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,203 psi | 61% | 2293 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,322 psi | 68% | 2434 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,272 psi | 85% | 2431 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 54,911 psi | 88% | 2448 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,056 psi | 88% | 2428 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,375 psi | 87% | 2352 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,230 psi | 89% | 2441 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,795 psi | 86% | 2484 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,043 psi | 90% | 2464 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 98% | 55,288 psi | 89% | 2510 fps | 99% |
| Hodgdon H4350 | <<locked>> | 96% | 56,275 psi | 90% | 2480 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 86% | 54,056 psi | 87% | 2421 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2405 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,359 psi | 86% | 2454 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,057 psi | 90% | 2549 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 57% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,259 psi | 89% | 2425 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,230 psi | 87% | 2402 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,998 psi | 87% | 2398 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,969 psi | 87% | 2385 fps | 98.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,361 psi | 89% | 2454 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,809 psi | 86% | 2411 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2457 fps | 99.9% |
| IMR 4895 | <<locked>> | 90% | 56,347 psi | 90% | 2477 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,014 psi | 90% | 2411 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,028 psi | 90% | 2395 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,982 psi | 85% | 2388 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 53,316 psi | 85% | 2352 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 53,882 psi | 86% | 2395 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,202 psi | 90% | 2448 fps | 99.6% |
| Lovex S070 | <<locked>> | 98% | 53,490 psi | 86% | 2434 fps | 98.8% |
| Norma 201 | <<locked>> | 88% | 55,622 psi | 89% | 2405 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,362 psi | 90% | 2408 fps | 100% |
| Norma 203B | <<locked>> | 90% | 54,114 psi | 87% | 2441 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 56,072 psi | 90% | 2500 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 42,525 psi | 68% | 2398 fps | 96.5% |
| Norma URPᴾ | <<locked>> | 100% | 54,926 psi | 88% | 2497 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 54,795 psi | 88% | 2467 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,896 psi | 86% | 2503 fps | 99.3% |
| Ramshot TAC | <<locked>> | 86% | 56,333 psi | 90% | 2441 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,956 psi | 90% | 2451 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,301 psi | 85% | 2372 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1476 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,622 psi | 89% | 2392 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,333 psi | 90% | 2451 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,709 psi | 89% | 2513 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,766 psi | 88% | 2539 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2533 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2562 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 86% | 56,347 psi | 90% | 2382 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,072 psi | 90% | 2405 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,520 psi | 87% | 2438 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 45,165 psi | 72% | 2369 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 55,056 psi | 88% | 2428 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,202 psi | 90% | 2448 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,982 psi | 85% | 2388 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,882 psi | 86% | 2395 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,490 psi | 86% | 2434 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 53,098 psi | 85% | 2454 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,549 psi | 87% | 2418 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,492 psi | 89% | 2438 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,983 psi | 87% | 2310 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,998 psi | 87% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,040 psi | 85% | 2362 fps | 98.5% |
| Somchem S321 | <<locked>> | 82% | 53,664 psi | 86% | 2398 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 53,243 psi | 85% | 2310 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,331 psi | 87% | 2408 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,998 psi | 88% | 2438 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,443 psi | 79% | 2457 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 45,948 psi | 74% | 2359 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 53,795 psi | 86% | 2274 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,331 psi | 87% | 2293 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,927 psi | 90% | 2369 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 53,185 psi | 85% | 2346 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 52,953 psi | 85% | 2375 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,186 psi | 87% | 2451 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 53,156 psi | 85% | 2369 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,708 psi | 88% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 53,055 psi | 85% | 2457 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,655 psi | 67% | 2356 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,375 psi | 87% | 2434 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,405 psi | 90% | 2454 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,593 psi | 89% | 2516 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,968 psi | 54% | 2303 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,158 psi | 88% | 2441 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% | 48,138 psi | 77% | 2241 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,518 psi | 84% | 2343 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,190 psi | 64% | 2178 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,601 psi | 76% | 2313 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 42,743 psi | 69% | 2208 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 34,403 psi | 55% | 2172 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 38,072 psi | 61% | 2178 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 29,791 psi | 48% | 2080 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,309 psi | 71% | 2283 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,768 psi | 61% | 2159 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 45,020 psi | 72% | 2352 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,470 psi | 75% | 2287 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 46,789 psi | 75% | 2264 fps | 100% |
| Alliant Power Pro 2000-MR | 51.6 gr | 80% | 40,118 psi | 64% | 2316 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,202 psi | 60% | 2175 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,001 psi | 64% | 2231 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,748 psi | 49% | 2096 fps | 95.9% |
| Alliant Reloder-17 | 50.8 gr | 80% | 31,865 psi | 51% | 2152 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 43,990 psi | 71% | 2343 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,353 psi | 42% | 2018 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 31,966 psi | 51% | 2215 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,540 psi | 70% | 2293 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 36,608 psi | 59% | 2178 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 40,147 psi | 64% | 2198 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,095 psi | 77% | 2270 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,005 psi | 72% | 2306 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,922 psi | 80% | 2431 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,478 psi | 60% | 2182 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 37,188 psi | 60% | 2224 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 43,569 psi | 70% | 2290 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 44,759 psi | 72% | 2290 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,281 psi | 42% | 1965 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,611 psi | 65% | 2270 fps | 99.9% |
| Hodgdon Superformance | 59.1 gr | 88% | 39,218 psi | 63% | 2283 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1283 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,931 psi | 69% | 2251 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 44,353 psi | 71% | 2277 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,624 psi | 64% | 2185 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,901 psi | 67% | 2201 fps | 96.3% |
| IMR 4350 | <<locked>> | 90% | 40,306 psi | 65% | 2224 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,508 psi | 63% | 2188 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 29,196 psi | 47% | 2051 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,002 psi | 66% | 2254 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,470 psi | 75% | 2287 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 52,301 psi | 84% | 2352 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,352 psi | 70% | 2260 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,527 psi | 71% | 2228 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 39,421 psi | 63% | 2185 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 34,258 psi | 55% | 2096 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 36,651 psi | 59% | 2162 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,192 psi | 69% | 2234 fps | 100% |
| Norma 202 | <<locked>> | 80% | 43,700 psi | 70% | 2241 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,349 psi | 63% | 2221 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 45,672 psi | 73% | 2349 fps | 95.3% |
| Norma MRP | <<locked>> | 98% | 39,900 psi | 64% | 2349 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 30,429 psi | 49% | 2083 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,783 psi | 62% | 2234 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 36,376 psi | 58% | 2218 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 46,311 psi | 74% | 2300 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,759 psi | 73% | 2313 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,879 psi | 80% | 2326 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 43% | 1319 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,011 psi | 83% | 2349 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,985 psi | 61% | 2169 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,250 psi | 68% | 2323 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,997 psi | 55% | 2208 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 29,791 psi | 48% | 2096 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 32,111 psi | 51% | 2149 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 47,239 psi | 76% | 2264 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,046 psi | 66% | 2195 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 34,345 psi | 55% | 2129 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 42,337 psi | 68% | 2323 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 40,147 psi | 64% | 2198 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,258 psi | 55% | 2096 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,352 psi | 70% | 2260 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,421 psi | 63% | 2185 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 36,651 psi | 59% | 2162 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,621 psi | 57% | 2178 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,382 psi | 71% | 2274 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,859 psi | 69% | 2260 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,686 psi | 72% | 2188 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,101 psi | 59% | 2080 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,101 psi | 61% | 2136 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 50,183 psi | 80% | 2356 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,222 psi | 71% | 2192 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,324 psi | 71% | 2274 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 35,317 psi | 57% | 2136 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 25,440 psi | 41% | 1998 fps | 97% |
| Somchem S385 | <<locked>> | 96% | 40,118 psi | 64% | 2264 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 50,517 psi | 81% | 2234 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,092 psi | 72% | 2182 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,640 psi | 65% | 2175 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,205 psi | 66% | 2185 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,504 psi | 54% | 2080 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 29,907 psi | 48% | 2044 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 46,485 psi | 75% | 2280 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,639 psi | 64% | 2182 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,328 psi | 50% | 2090 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 28,050 psi | 45% | 2080 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,776 psi | 48% | 2024 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 46,050 psi | 74% | 2320 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 37,188 psi | 60% | 2224 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,237 psi | 42% | 2083 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,192 psi | 68% | 2260 fps | 99.8% |
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 | 260gr | CutEdge Maximus. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,562 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 52–90 %, leaving at least 10 % headroom. The 260.0 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 Power Pro 2000-MR, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .338 Win Mag. with the .338 | 260gr | CutEdge Maximus they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Bofors RP15 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.