Load Specifications
Load data in caliber .338 RCM with .338 | 225gr | Woodleigh PP SN bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R 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.
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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 1680 | <<locked>> | 82% | 55,579 psi | 89% | 2349 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 55,071 psi | 88% | 2411 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 56,173 psi | 90% | 2497 fps | 98.7% |
| Accurate 2230 | <<locked>> | 84% | 53,229 psi | 85% | 2461 fps | 98.6% |
| Accurate 2460 | <<locked>> | 90% | 53,925 psi | 86% | 2441 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 54,534 psi | 87% | 2464 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 56,159 psi | 90% | 2516 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,531 psi | 81% | 2454 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 53,417 psi | 86% | 2336 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,838 psi | 86% | 2352 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 54,041 psi | 87% | 2487 fps | 99% |
| ADI AR 2207 | <<locked>> | 84% | 54,433 psi | 87% | 2352 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2434 fps | 98.1% |
| ADI AR 2219 | <<locked>> | 88% | 56,275 psi | 90% | 2480 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,650 psi | 86% | 2451 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 96% | 55,840 psi | 90% | 2480 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,969 psi | 88% | 2546 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 53,563 psi | 86% | 2575 fps | 98.3% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2448 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,477 psi | 89% | 2425 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2510 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,280 psi | 71% | 2438 fps | 97.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,434 psi | 89% | 2369 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,071 psi | 88% | 2372 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 53,417 psi | 86% | 2497 fps | 98.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,951 psi | 80% | 2464 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 94% | 56,333 psi | 90% | 2441 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,129 psi | 88% | 2523 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,606 psi | 86% | 2556 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 90% | 54,447 psi | 87% | 2461 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 55,796 psi | 89% | 2487 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 52,040 psi | 83% | 2467 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 84% | 55,201 psi | 89% | 2372 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 54,404 psi | 87% | 2497 fps | 99.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 55,854 psi | 90% | 2566 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 54% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 56,086 psi | 90% | 2500 fps | 99.5% |
| IMR 3031 | <<locked>> | 98% | 56,057 psi | 90% | 2526 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,317 psi | 87% | 2461 fps | 98.7% |
| IMR 4198 | <<locked>> | 90% | 56,144 psi | 90% | 2385 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2543 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 94% | 53,650 psi | 86% | 2451 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 84% | 54,041 psi | 87% | 2448 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 53,838 psi | 86% | 2448 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 98% | 55,840 psi | 90% | 2513 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 54,984 psi | 88% | 2428 fps | 99.1% |
| Lovex S062ᴾ | <<locked>> | 100% | 53,243 psi | 85% | 2461 fps | 99.7% |
| Norma 200 | <<locked>> | 86% | 55,550 psi | 89% | 2402 fps | 100% |
| Norma 201 | <<locked>> | 98% | 55,999 psi | 90% | 2484 fps | 99.8% |
| Norma 202 | <<locked>> | 98% | 56,289 psi | 90% | 2493 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,272 psi | 85% | 2500 fps | 99% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2526 fps | 98.9% |
| Ramshot TAC | <<locked>> | 94% | 54,505 psi | 87% | 2461 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 94% | 52,794 psi | 85% | 2477 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,651 psi | 89% | 2461 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,939 psi | 54% | 1470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,650 psi | 86% | 2444 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,766 psi | 86% | 2569 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2503 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 94% | 53,853 psi | 86% | 2431 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 56,260 psi | 90% | 2477 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,209 psi | 74% | 2402 fps | 98.6% |
| Shooters World AR Plus | <<locked>> | 84% | 54,041 psi | 87% | 2448 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 55,840 psi | 90% | 2513 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 53,243 psi | 85% | 2461 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 54,157 psi | 87% | 2421 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,476 psi | 87% | 2126 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,069 psi | 85% | 2448 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2457 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,345 psi | 86% | 2402 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 55,709 psi | 89% | 2484 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 55,709 psi | 89% | 2507 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,521 psi | 89% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,242 psi | 82% | 2356 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 54,723 psi | 88% | 2487 fps | 99.8% |
| Somchem S335 | <<locked>> | 96% | 54,288 psi | 87% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,694 psi | 88% | 2477 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2408 fps | 98.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,113 psi | 55% | 2247 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 84% | 54,375 psi | 87% | 2306 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,564 psi | 89% | 2379 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 55,013 psi | 88% | 2385 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,578 psi | 88% | 2451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,156 psi | 85% | 2428 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2352 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 94% | 54,288 psi | 87% | 2454 fps | 99.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,824 psi | 88% | 2470 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,989 psi | 67% | 2293 fps | 97.1% |
| Winchester 748 | <<locked>> | 96% | 56,347 psi | 90% | 2539 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,361 psi | 89% | 2516 fps | 99.5% |
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 1680 | <<locked>> | 80% | 52,185 psi | 84% | 2310 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,853 psi | 57% | 2142 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 46,427 psi | 74% | 2356 fps | 97.1% |
| Accurate 2230 | <<locked>> | 80% | 46,267 psi | 74% | 2362 fps | 97.5% |
| Accurate 2460 | <<locked>> | 80% | 38,435 psi | 62% | 2215 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 28,195 psi | 45% | 2051 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 32,489 psi | 52% | 2152 fps | 97.6% |
| Accurate 4064 | <<locked>> | 80% | 26,745 psi | 43% | 2028 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 80% | 44,353 psi | 71% | 2215 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,672 psi | 72% | 2228 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 35,070 psi | 56% | 2175 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 47,979 psi | 77% | 2277 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 38,261 psi | 61% | 2218 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 43,149 psi | 69% | 2306 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,795 psi | 56% | 2146 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 80% | 32,967 psi | 53% | 2159 fps | 100% |
| Alliant Power Pro 1200-R | 39 gr | 80% | 39,653 psi | 64% | 2306 fps | 97.2% |
| Alliant Power Pro 2000-MR | 46.7 gr | 90% | 40,973 psi | 66% | 2365 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 32,169 psi | 52% | 2142 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,959 psi | 66% | 2231 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 37,420 psi | 60% | 2244 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 36,477 psi | 58% | 2287 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,037 psi | 79% | 2290 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,047 psi | 69% | 2218 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 41,075 psi | 66% | 2306 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 31,372 psi | 50% | 2142 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,115 psi | 60% | 2149 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,169 psi | 52% | 2149 fps | 96.3% |
| Hodgdon CFE223 | 43.6 gr | 82% | 38,261 psi | 61% | 2303 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 39,291 psi | 63% | 2244 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 39,943 psi | 64% | 2264 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 94% | 42,714 psi | 68% | 2329 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 48,805 psi | 78% | 2290 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 33,025 psi | 53% | 2139 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,489 psi | 54% | 2195 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,005 psi | 40% | 1280 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,011 psi | 55% | 2146 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 31,604 psi | 51% | 2149 fps | 99.4% |
| IMR 4064 | <<locked>> | 88% | 37,550 psi | 60% | 2201 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 42,192 psi | 68% | 2208 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 35,839 psi | 57% | 2224 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 34,795 psi | 56% | 2146 fps | 96.4% |
| Lovex D073.4 | <<locked>> | 80% | 47,007 psi | 75% | 2352 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 38,203 psi | 61% | 2215 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 30,560 psi | 49% | 2110 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 36,376 psi | 58% | 2133 fps | 95.4% |
| Lovex S062 | <<locked>> | 82% | 30,777 psi | 49% | 2080 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 46,050 psi | 74% | 2283 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,198 psi | 52% | 2093 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 31,952 psi | 51% | 2110 fps | 98.1% |
| Norma 203B | <<locked>> | 88% | 36,680 psi | 59% | 2234 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 88% | 36,535 psi | 59% | 2244 fps | 95% |
| Ramshot TAC | <<locked>> | 90% | 47,921 psi | 77% | 2369 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,665 psi | 57% | 2198 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,768 psi | 61% | 2185 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,222 psi | 40% | 1312 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,943 psi | 62% | 2224 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 38,696 psi | 62% | 2326 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,414 psi | 49% | 2152 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 35,723 psi | 57% | 2146 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 30,748 psi | 49% | 2054 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 33,460 psi | 54% | 2178 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 47,007 psi | 75% | 2352 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,560 psi | 49% | 2110 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 30,777 psi | 49% | 2080 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,234 psi | 66% | 2234 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,168 psi | 79% | 2067 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,613 psi | 70% | 2313 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 37,768 psi | 61% | 2274 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,611 psi | 67% | 2241 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 45,513 psi | 73% | 2343 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 35,839 psi | 57% | 2192 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,229 psi | 55% | 2080 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,746 psi | 44% | 1962 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 36,912 psi | 59% | 2211 fps | 97.4% |
| Somchem S335 | <<locked>> | 80% | 33,417 psi | 54% | 2080 fps | 98.9% |
| Somchem S341 | <<locked>> | 84% | 36,579 psi | 59% | 2198 fps | 95.3% |
| Somchem S355 | <<locked>> | 90% | 34,838 psi | 56% | 2188 fps | 95.6% |
| Somchem S365 | <<locked>> | 98% | 32,039 psi | 51% | 2198 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 47,964 psi | 77% | 2234 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,928 psi | 62% | 2156 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,142 psi | 55% | 2087 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 29,138 psi | 47% | 2057 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 30,342 psi | 49% | 2060 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 29,370 psi | 47% | 2054 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 34,461 psi | 55% | 2139 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 28,921 psi | 46% | 2044 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 36,927 psi | 59% | 2201 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 33,127 psi | 53% | 2169 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 34,853 psi | 56% | 2192 fps | 95.7% |
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 90 powders for .338 RCM loaded with the .338 | 225gr | Woodleigh PP SN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,575 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,575 fps. Accurate 2495 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, 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 2495, Accurate 4064, ADI AR 2208 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 CFE223, Alliant Power Pro 1200-R, Alliant Power Pro 2000-MR rank at the top here: for .338 RCM with the .338 | 225gr | Woodleigh PP SN 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.