Load Specifications
Load data in caliber .338 RCM with .338 | 225gr | Barnes Solid BT bullet and 92 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, ReloadSwiss RS 52 and Hodgdon CFE223.
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>> | 92% | 54,027 psi | 87% | 2421 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 54,824 psi | 88% | 2503 fps | 98.8% |
| Accurate 2230 | <<locked>> | 84% | 55,651 psi | 89% | 2516 fps | 99.1% |
| Accurate 2460 | <<locked>> | 90% | 56,115 psi | 90% | 2487 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 53,679 psi | 86% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,361 psi | 89% | 2526 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 53,127 psi | 85% | 2503 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 55,158 psi | 88% | 2379 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,564 psi | 89% | 2398 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 56,362 psi | 90% | 2539 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 84% | 56,391 psi | 90% | 2392 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2487 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 86% | 54,824 psi | 88% | 2484 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 55,999 psi | 90% | 2503 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 54,766 psi | 88% | 2484 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 53,766 psi | 86% | 2549 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 56,043 psi | 90% | 2638 fps | 99% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 52,489 psi | 84% | 2507 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,360 psi | 87% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 53,505 psi | 86% | 2523 fps | 98.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,456 psi | 74% | 2500 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,070 psi | 87% | 2372 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 53,722 psi | 86% | 2379 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 55,985 psi | 90% | 2552 fps | 98.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2520 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 92% | 54,984 psi | 88% | 2448 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 54,244 psi | 87% | 2533 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 92% | 56,202 psi | 90% | 2615 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 88% | 53,490 psi | 86% | 2467 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,476 psi | 87% | 2493 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2523 fps | 98% |
| Hodgdon H4198 | <<locked>> | 82% | 53,751 psi | 86% | 2379 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,505 psi | 86% | 2507 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,057 psi | 59% | 2267 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 54,781 psi | 88% | 2572 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,229 psi | 55% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 54,868 psi | 88% | 2507 fps | 99.6% |
| IMR 3031 | <<locked>> | 96% | 55,651 psi | 89% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,534 psi | 86% | 2477 fps | 98.9% |
| IMR 4198 | <<locked>> | 88% | 55,100 psi | 88% | 2395 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 54,839 psi | 88% | 2556 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 94% | 55,999 psi | 90% | 2503 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 52,765 psi | 85% | 2451 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 56,318 psi | 90% | 2497 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 55,013 psi | 88% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 53,940 psi | 86% | 2438 fps | 99.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 55,898 psi | 90% | 2516 fps | 99.9% |
| Norma 200 | <<locked>> | 84% | 54,505 psi | 87% | 2408 fps | 100% |
| Norma 201 | <<locked>> | 96% | 54,897 psi | 88% | 2490 fps | 99.8% |
| Norma 202 | <<locked>> | 96% | 55,303 psi | 89% | 2500 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2559 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 98% | 53,055 psi | 85% | 2536 fps | 99% |
| Ramshot TAC | <<locked>> | 92% | 53,171 psi | 85% | 2470 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 94% | 55,608 psi | 89% | 2536 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,099 psi | 87% | 2464 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,360 psi | 55% | 1493 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 55,898 psi | 90% | 2493 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2510 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,040 psi | 85% | 2582 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2562 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 56,260 psi | 90% | 2480 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 55,187 psi | 88% | 2484 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,849 psi | 78% | 2461 fps | 99.2% |
| Shooters World AR Plus | <<locked>> | 82% | 52,765 psi | 85% | 2451 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,013 psi | 88% | 2523 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 55,898 psi | 90% | 2516 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 56,231 psi | 90% | 2467 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,956 psi | 90% | 2159 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,274 psi | 89% | 2497 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2516 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,419 psi | 89% | 2448 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 54,578 psi | 88% | 2493 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 54,752 psi | 88% | 2516 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,534 psi | 87% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 2402 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 53,592 psi | 86% | 2493 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 56,333 psi | 90% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 53,650 psi | 86% | 2487 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,763 psi | 80% | 2461 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,853 psi | 57% | 2310 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 84% | 56,246 psi | 90% | 2346 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,592 psi | 88% | 2385 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,201 psi | 87% | 2398 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 53,838 psi | 86% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 55,825 psi | 90% | 2480 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,138 psi | 77% | 2405 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 42,438 psi | 68% | 2356 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 92% | 53,243 psi | 85% | 2461 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 98% | 53,838 psi | 86% | 2480 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 43,961 psi | 70% | 2352 fps | 98% |
| Winchester 748 | <<locked>> | 94% | 55,201 psi | 89% | 2546 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,302 psi | 87% | 2526 fps | 99.6% |
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% | 37,507 psi | 60% | 2185 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,312 psi | 77% | 2408 fps | 97.8% |
| Accurate 2230 | <<locked>> | 80% | 48,341 psi | 78% | 2415 fps | 98.2% |
| Accurate 2460 | <<locked>> | 80% | 40,364 psi | 65% | 2267 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 29,936 psi | 48% | 2103 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 34,287 psi | 55% | 2205 fps | 98.4% |
| Accurate 4064 | <<locked>> | 80% | 28,369 psi | 45% | 2083 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 80% | 45,905 psi | 74% | 2257 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,224 psi | 74% | 2274 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 34,447 psi | 55% | 2182 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 49,995 psi | 80% | 2320 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 37,449 psi | 60% | 2224 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 45,005 psi | 72% | 2352 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,376 psi | 58% | 2198 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 34,577 psi | 55% | 2205 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,611 psi | 67% | 2362 fps | 98% |
| Alliant Power Pro 2000-MR | 47.7 gr | 88% | 40,001 psi | 64% | 2372 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 31,807 psi | 51% | 2152 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,554 psi | 68% | 2270 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 36,782 psi | 59% | 2251 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,984 psi | 58% | 2300 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,821 psi | 81% | 2333 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,701 psi | 72% | 2260 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,248 psi | 65% | 2313 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 31,024 psi | 50% | 2149 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,493 psi | 62% | 2195 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,823 psi | 54% | 2201 fps | 97.2% |
| Hodgdon CFE223 | 44.4 gr | 80% | 37,304 psi | 60% | 2306 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 41,147 psi | 66% | 2293 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 41,524 psi | 67% | 2310 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 42,090 psi | 67% | 2339 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 50,502 psi | 81% | 2336 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,592 psi | 55% | 2192 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,867 psi | 56% | 2224 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,677 psi | 52% | 2195 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,237 psi | 40% | 1299 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,344 psi | 53% | 2149 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 33,141 psi | 53% | 2198 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 36,927 psi | 59% | 2208 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 43,555 psi | 70% | 2244 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,331 psi | 57% | 2234 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 36,376 psi | 58% | 2198 fps | 97.2% |
| Lovex D073.4 | <<locked>> | 80% | 49,197 psi | 79% | 2405 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 40,030 psi | 64% | 2267 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 32,155 psi | 52% | 2159 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 35,447 psi | 57% | 2133 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 30,139 psi | 48% | 2083 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 48,196 psi | 77% | 2329 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,794 psi | 54% | 2146 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 33,547 psi | 54% | 2162 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 33,910 psi | 54% | 2195 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 35,853 psi | 57% | 2251 fps | 95.3% |
| Ramshot TAC | <<locked>> | 86% | 43,816 psi | 70% | 2326 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,853 psi | 56% | 2201 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,378 psi | 63% | 2234 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,440 psi | 41% | 1332 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,611 psi | 65% | 2270 fps | 99.2% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 48,979 psi | 79% | 2418 fps | 95.2% |
| ReloadSwiss RS 52 | 45.2 gr | 86% | 37,884 psi | 61% | 2329 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 29,776 psi | 48% | 2159 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 37,275 psi | 60% | 2195 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,111 psi | 51% | 2103 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 88% | 32,982 psi | 53% | 2185 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 49,197 psi | 79% | 2405 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,155 psi | 52% | 2159 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 30,139 psi | 48% | 2083 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,033 psi | 69% | 2283 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,357 psi | 81% | 2096 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,295 psi | 73% | 2359 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 34,911 psi | 56% | 2234 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,178 psi | 69% | 2283 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 41,481 psi | 67% | 2297 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 34,998 psi | 56% | 2195 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,433 psi | 57% | 2123 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,834 psi | 46% | 2005 fps | 98.3% |
| Somchem S321 | <<locked>> | 80% | 38,653 psi | 62% | 2264 fps | 98.1% |
| Somchem S335 | <<locked>> | 80% | 35,012 psi | 56% | 2129 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 35,824 psi | 57% | 2205 fps | 95.5% |
| Somchem S355 | <<locked>> | 86% | 32,445 psi | 52% | 2156 fps | 95.1% |
| Somchem S365 | <<locked>> | 96% | 31,575 psi | 51% | 2211 fps | 95.9% |
| Vihtavuori N120 | <<locked>> | 80% | 49,966 psi | 80% | 2274 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,321 psi | 65% | 2195 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,404 psi | 57% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 30,516 psi | 49% | 2103 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 31,633 psi | 51% | 2106 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 28,805 psi | 46% | 2057 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 98% | 39,914 psi | 64% | 2313 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 36,056 psi | 58% | 2188 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 80% | 30,284 psi | 49% | 2090 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 33,968 psi | 54% | 2165 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 34,780 psi | 56% | 2221 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 31,981 psi | 51% | 2149 fps | 95% |
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 92 powders for .338 RCM loaded with the .338 | 225gr | Barnes Solid BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,460 fps to 2,638 fps. Accurate 4064 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .338 RCM with the .338 | 225gr | Barnes Solid BT 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.