Load Specifications
Load data in caliber .338 RCM with .338 | 232gr | Lehigh Defense Controlled Fracturing bullet and 99 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 54,360 psi | 87% | 2395 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 55,405 psi | 89% | 2484 fps | 99.1% |
| Accurate 2230 | <<locked>> | 84% | 56,101 psi | 90% | 2493 fps | 99.4% |
| Accurate 2460 | <<locked>> | 88% | 52,968 psi | 85% | 2421 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,041 psi | 87% | 2444 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,375 psi | 87% | 2474 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 53,548 psi | 86% | 2480 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 39,392 psi | 63% | 2336 fps | 96% |
| Accurate LT-30 | <<locked>> | 86% | 55,651 psi | 89% | 2356 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,115 psi | 90% | 2375 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 53,490 psi | 86% | 2474 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 82% | 53,388 psi | 86% | 2329 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2467 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 86% | 55,448 psi | 89% | 2461 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,214 psi | 85% | 2441 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 55,535 psi | 89% | 2461 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 54,317 psi | 87% | 2530 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,156 psi | 85% | 2572 fps | 99% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,214 psi | 85% | 2487 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,795 psi | 88% | 2405 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,317 psi | 87% | 2507 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,191 psi | 66% | 2352 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,021 psi | 75% | 2487 fps | 99.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,418 psi | 87% | 2346 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,505 psi | 87% | 2359 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,229 psi | 85% | 2490 fps | 98.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 52,924 psi | 85% | 2493 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,767 psi | 89% | 2431 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,056 psi | 88% | 2513 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,113 psi | 85% | 2546 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 88% | 54,041 psi | 87% | 2444 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,940 psi | 88% | 2467 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2507 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 82% | 54,244 psi | 87% | 2356 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,896 psi | 86% | 2484 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,144 psi | 60% | 2251 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,782 psi | 89% | 2556 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,069 psi | 55% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,767 psi | 89% | 2490 fps | 99.8% |
| IMR 3031 | <<locked>> | 96% | 56,362 psi | 90% | 2513 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,998 psi | 87% | 2454 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 96% | 55,274 psi | 89% | 2438 fps | 96.2% |
| IMR 4198 | <<locked>> | 88% | 55,767 psi | 89% | 2369 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 55,637 psi | 89% | 2536 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 92% | 53,214 psi | 85% | 2441 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 53,113 psi | 85% | 2428 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 52,837 psi | 85% | 2428 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 55,434 psi | 89% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,346 psi | 87% | 2415 fps | 99.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 56,318 psi | 90% | 2493 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2349 fps | 95.8% |
| Norma 200 | <<locked>> | 84% | 54,360 psi | 87% | 2379 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,579 psi | 89% | 2470 fps | 100% |
| Norma 202 | <<locked>> | 96% | 55,753 psi | 89% | 2474 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,359 psi | 86% | 2497 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 40,466 psi | 65% | 2339 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 98% | 53,592 psi | 86% | 2516 fps | 99.4% |
| Ramshot TAC | <<locked>> | 92% | 53,882 psi | 86% | 2454 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,130 psi | 90% | 2516 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,824 psi | 88% | 2444 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,156 psi | 55% | 1473 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 52,997 psi | 85% | 2431 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 2493 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,664 psi | 86% | 2562 fps | 99.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,343 psi | 81% | 2546 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 56,318 psi | 90% | 2454 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 55,782 psi | 89% | 2464 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,168 psi | 79% | 2438 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 53,113 psi | 85% | 2428 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 45,803 psi | 73% | 2349 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,434 psi | 89% | 2497 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 56,318 psi | 90% | 2493 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 53,243 psi | 85% | 2405 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 56,391 psi | 90% | 2136 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,782 psi | 89% | 2470 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 2500 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 56,072 psi | 90% | 2421 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 54,955 psi | 88% | 2474 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,201 psi | 89% | 2493 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,969 psi | 88% | 2385 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 2379 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,331 psi | 87% | 2474 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 53,650 psi | 86% | 2385 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,520 psi | 87% | 2470 fps | 99.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,415 psi | 81% | 2444 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,853 psi | 57% | 2290 fps | 98% |
| Vihtavuori N120 | <<locked>> | 82% | 53,330 psi | 86% | 2283 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,013 psi | 88% | 2362 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,737 psi | 88% | 2372 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,360 psi | 87% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 56,362 psi | 90% | 2454 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 2385 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 42,946 psi | 69% | 2343 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 92% | 53,693 psi | 86% | 2441 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 54,607 psi | 88% | 2461 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 41,655 psi | 67% | 2346 fps | 96% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,396 psi | 71% | 2339 fps | 98.6% |
| Winchester 748 | <<locked>> | 94% | 56,159 psi | 90% | 2526 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,824 psi | 88% | 2503 fps | 99.8% |
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% | 37,246 psi | 60% | 2159 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 48,733 psi | 78% | 2388 fps | 98.3% |
| Accurate 2230 | <<locked>> | 80% | 48,660 psi | 78% | 2395 fps | 98.6% |
| Accurate 2460 | <<locked>> | 80% | 40,364 psi | 65% | 2244 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 29,312 psi | 47% | 2070 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 35,766 psi | 57% | 2198 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 27,789 psi | 45% | 2051 fps | 98% |
| Accurate 4350 | <<locked>> | 98% | 36,738 psi | 59% | 2290 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 46,253 psi | 74% | 2234 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,630 psi | 75% | 2254 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 34,243 psi | 55% | 2156 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 50,401 psi | 81% | 2293 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 35,389 psi | 57% | 2162 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 45,426 psi | 73% | 2333 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,289 psi | 58% | 2172 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 34,751 psi | 56% | 2182 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,684 psi | 67% | 2336 fps | 98.4% |
| Alliant Power Pro 2000-MR | 47 gr | 86% | 37,811 psi | 61% | 2306 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 29,834 psi | 48% | 2087 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,728 psi | 69% | 2247 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 34,635 psi | 56% | 2185 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 38,783 psi | 62% | 2306 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 33,736 psi | 54% | 2231 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,126 psi | 82% | 2306 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,991 psi | 72% | 2238 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,101 psi | 61% | 2251 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 30,922 psi | 50% | 2129 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,595 psi | 62% | 2175 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,895 psi | 54% | 2182 fps | 97.6% |
| Hodgdon CFE223 | 44.7 gr | 80% | 37,492 psi | 60% | 2287 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 41,481 psi | 67% | 2270 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 41,829 psi | 67% | 2287 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 39,639 psi | 64% | 2274 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 51,010 psi | 82% | 2313 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,461 psi | 55% | 2165 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 32,779 psi | 53% | 2159 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 30,806 psi | 49% | 2133 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,092 psi | 40% | 1283 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,417 psi | 54% | 2129 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 33,257 psi | 53% | 2178 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 34,809 psi | 56% | 2146 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 52,040 psi | 83% | 2392 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 44,005 psi | 71% | 2221 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 33,228 psi | 53% | 2169 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,289 psi | 58% | 2172 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 80% | 49,458 psi | 79% | 2382 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,030 psi | 64% | 2244 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 32,111 psi | 51% | 2139 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 35,505 psi | 57% | 2116 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 30,052 psi | 48% | 2060 fps | 95.8% |
| Lovex S065 | <<locked>> | 98% | 43,076 psi | 69% | 2306 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 47,950 psi | 77% | 2300 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,431 psi | 54% | 2119 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 33,591 psi | 54% | 2139 fps | 99% |
| Norma 203B | <<locked>> | 84% | 33,982 psi | 54% | 2178 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 38,014 psi | 61% | 2293 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 33,634 psi | 54% | 2182 fps | 95% |
| Ramshot TAC | <<locked>> | 86% | 44,266 psi | 71% | 2310 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,954 psi | 56% | 2182 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,494 psi | 63% | 2215 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,266 psi | 41% | 1316 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,828 psi | 65% | 2251 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 46,340 psi | 74% | 2352 fps | 95.1% |
| ReloadSwiss RS 52 | 44.5 gr | 84% | 35,723 psi | 57% | 2264 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 27,775 psi | 45% | 2090 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 36,999 psi | 59% | 2169 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 31,952 psi | 51% | 2083 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 30,835 psi | 49% | 2119 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 49,458 psi | 79% | 2382 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 43,076 psi | 69% | 2306 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,111 psi | 51% | 2139 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 30,052 psi | 48% | 2060 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,279 psi | 69% | 2264 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,792 psi | 81% | 2073 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,600 psi | 73% | 2336 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 34,969 psi | 56% | 2218 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,569 psi | 70% | 2260 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 41,640 psi | 67% | 2280 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 32,982 psi | 53% | 2129 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,505 psi | 57% | 2100 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,834 psi | 46% | 1985 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 38,740 psi | 62% | 2241 fps | 98.5% |
| Somchem S335 | <<locked>> | 80% | 34,751 psi | 56% | 2103 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 33,779 psi | 54% | 2142 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 32,401 psi | 52% | 2136 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 29,791 psi | 48% | 2152 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 50,415 psi | 81% | 2251 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,495 psi | 65% | 2172 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,563 psi | 57% | 2106 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 30,530 psi | 49% | 2080 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 31,705 psi | 51% | 2083 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 26,934 psi | 43% | 1995 fps | 95% |
| Vihtavuori N160 | <<locked>> | 98% | 40,335 psi | 65% | 2300 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 36,143 psi | 58% | 2169 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 30,269 psi | 49% | 2070 fps | 98% |
| Vihtavuori N550 | <<locked>> | 98% | 39,146 psi | 63% | 2303 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,142 psi | 55% | 2152 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 34,896 psi | 56% | 2205 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 31,995 psi | 51% | 2129 fps | 95.5% |
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 99 powders for .338 RCM loaded with the .338 | 232gr | Lehigh Defense Controlled Fracturing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,572 fps. Accurate 4064 gives the best case fill at 100 %, and 99 of the 99 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 232.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for .338 RCM with the .338 | 232gr | Lehigh Defense Controlled Fracturing 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.