Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:240 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Weatherby RPM load data
Case Length (l3):2.55"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.6 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:10.5
Load data in caliber .338 Weatherby RPM with .338 | 240gr | Lehigh Defense Match Solid bullet and 111 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 CFE223 and ReloadSwiss RS 52.
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>> | 90% | 57,159 psi | 88% | 2421 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,595 psi | 89% | 2520 fps | 99.8% |
| Accurate 2230 | <<locked>> | 82% | 58,697 psi | 90% | 2530 fps | 99.9% |
| Accurate 2460 | <<locked>> | 86% | 55,680 psi | 86% | 2451 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 57,769 psi | 89% | 2477 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 57,551 psi | 89% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,506 psi | 85% | 2441 fps | 96.6% |
| Accurate 4064 | <<locked>> | 98% | 57,363 psi | 88% | 2516 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,340 psi | 71% | 2448 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 84% | 57,188 psi | 88% | 2375 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,667 psi | 89% | 2398 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,463 psi | 87% | 2516 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 98% | 57,203 psi | 88% | 2510 fps | 99.8% |
| ADI AR 2219 | <<locked>> | 84% | 58,131 psi | 89% | 2487 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,550 psi | 85% | 2474 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,695 psi | 86% | 2451 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 57,508 psi | 88% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,695 psi | 86% | 2621 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,362 psi | 87% | 2526 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,072 psi | 88% | 2425 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 57,406 psi | 88% | 2549 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,267 psi | 71% | 2457 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,388 psi | 82% | 2592 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,256 psi | 50% | 2211 fps | 96.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,376 psi | 87% | 2379 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,144 psi | 86% | 2533 fps | 99.6% |
| Bofors RP3 | <<locked>> | 98% | 56,710 psi | 87% | 2543 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,114 psi | 83% | 2464 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 57,943 psi | 89% | 2461 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 58,030 psi | 89% | 2546 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,579 psi | 87% | 2592 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 86% | 56,492 psi | 87% | 2467 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 57,696 psi | 89% | 2497 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 58,465 psi | 90% | 2556 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,937 psi | 77% | 2497 fps | 96.7% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,129 psi | 85% | 2516 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 92% | 56,956 psi | 88% | 2526 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,235 psi | 65% | 2352 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,767 psi | 86% | 2556 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 51,372 psi | 79% | 2526 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 53% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 58,378 psi | 90% | 2526 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 56,202 psi | 86% | 2503 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,695 psi | 87% | 2493 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,566 psi | 89% | 2484 fps | 97.7% |
| IMR 4198 | <<locked>> | 86% | 57,827 psi | 89% | 2388 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,449 psi | 87% | 2500 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,295 psi | 68% | 2402 fps | 98.2% |
| IMR 4895 | <<locked>> | 94% | 55,288 psi | 85% | 2533 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 55,550 psi | 85% | 2474 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,622 psi | 86% | 2464 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,245 psi | 85% | 2493 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,652 psi | 87% | 2454 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 55,898 psi | 86% | 2490 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,503 psi | 79% | 2441 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,052 psi | 75% | 2425 fps | 96.6% |
| Norma 200 | <<locked>> | 82% | 56,840 psi | 87% | 2398 fps | 100% |
| Norma 201 | <<locked>> | 94% | 58,218 psi | 90% | 2507 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,332 psi | 85% | 2467 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,420 psi | 87% | 2539 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 46,470 psi | 71% | 2444 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 96% | 57,043 psi | 88% | 2566 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,701 psi | 70% | 2438 fps | 96.5% |
| Ramshot TAC | <<locked>> | 90% | 56,202 psi | 86% | 2493 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,303 psi | 85% | 2510 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,159 psi | 88% | 2484 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 54% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,317 psi | 85% | 2457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,622 psi | 86% | 2497 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 57,740 psi | 89% | 2612 fps | 99.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 57,130 psi | 88% | 2641 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,151 psi | 71% | 2470 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,123 psi | 72% | 2487 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 90% | 55,753 psi | 86% | 2448 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 58,755 psi | 90% | 2503 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,637 psi | 87% | 2533 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,114 psi | 83% | 2464 fps | 96.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,503 psi | 79% | 2441 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,245 psi | 85% | 2493 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,898 psi | 86% | 2490 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,052 psi | 75% | 2425 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,201 psi | 85% | 2434 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,203 psi | 88% | 2142 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 58,334 psi | 90% | 2500 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 58,755 psi | 90% | 2592 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 58,349 psi | 90% | 2444 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 57,827 psi | 89% | 2516 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 58,276 psi | 90% | 2536 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,145 psi | 88% | 2411 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,710 psi | 87% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,156 psi | 80% | 2402 fps | 96.8% |
| Somchem S321 | <<locked>> | 88% | 57,000 psi | 88% | 2510 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,970 psi | 86% | 2411 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 57,392 psi | 88% | 2510 fps | 99.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 2530 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,263 psi | 63% | 2402 fps | 99.8% |
| Vihtavuori N120 | <<locked>> | 82% | 58,668 psi | 90% | 2336 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 57,043 psi | 88% | 2382 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,101 psi | 88% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 58,073 psi | 89% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,898 psi | 86% | 2448 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,405 psi | 85% | 2474 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,037 psi | 75% | 2444 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 90% | 56,318 psi | 87% | 2477 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 57,551 psi | 89% | 2490 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,877 psi | 74% | 2448 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,200 psi | 53% | 2280 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,125 psi | 77% | 2438 fps | 99.9% |
| Winchester 748 | <<locked>> | 90% | 55,550 psi | 85% | 2516 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,241 psi | 77% | 2500 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 94% | 58,189 psi | 90% | 2546 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% | 41,814 psi | 64% | 2224 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 54,012 psi | 83% | 2470 fps | 99.5% |
| Accurate 2230 | <<locked>> | 80% | 54,708 psi | 84% | 2480 fps | 99.7% |
| Accurate 2460 | <<locked>> | 80% | 45,585 psi | 70% | 2320 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,910 psi | 52% | 2149 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,582 psi | 62% | 2277 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 48,515 psi | 75% | 2346 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 32,126 psi | 49% | 2136 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 34,911 psi | 54% | 2251 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 50,531 psi | 78% | 2297 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,937 psi | 78% | 2316 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,522 psi | 59% | 2241 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 32,866 psi | 51% | 2113 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 50,865 psi | 78% | 2402 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,625 psi | 63% | 2254 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 39,726 psi | 61% | 2247 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,166 psi | 73% | 2425 fps | 99.7% |
| Alliant Power Pro 2000-MR | 48 gr | 80% | 34,577 psi | 53% | 2247 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,879 psi | 49% | 2129 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,456 psi | 73% | 2306 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,360 psi | 53% | 2178 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,040 psi | 52% | 2218 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,372 psi | 48% | 2188 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,356 psi | 47% | 2165 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,414 psi | 76% | 2297 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,362 psi | 57% | 2241 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 30,922 psi | 48% | 2123 fps | 96.8% |
| Bofors RP7 | <<locked>> | 96% | 47,747 psi | 73% | 2375 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,641 psi | 66% | 2247 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,537 psi | 59% | 2267 fps | 99.3% |
| Hodgdon CFE223 | 49.2 gr | 80% | 42,656 psi | 66% | 2388 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 46,311 psi | 71% | 2339 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,108 psi | 72% | 2362 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 36,825 psi | 57% | 2224 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 96% | 43,787 psi | 67% | 2398 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 98% | 51,503 psi | 79% | 2464 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,812 psi | 60% | 2251 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 28,993 psi | 45% | 2080 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,664 psi | 53% | 2221 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 98% | 47,645 psi | 73% | 2470 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 40% | 1302 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,550 psi | 58% | 2215 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 37,913 psi | 58% | 2254 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,432 psi | 53% | 2142 fps | 96.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 44,918 psi | 69% | 2300 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 48,312 psi | 74% | 2277 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,094 psi | 72% | 2365 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 33,968 psi | 52% | 2211 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 35,186 psi | 54% | 2208 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,625 psi | 63% | 2254 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 45,310 psi | 70% | 2326 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 36,825 psi | 57% | 2224 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 39,349 psi | 61% | 2195 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 34,011 psi | 52% | 2146 fps | 98% |
| Lovex S065 | <<locked>> | 92% | 40,248 psi | 62% | 2264 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 43,047 psi | 66% | 2329 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 53,417 psi | 82% | 2359 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,579 psi | 58% | 2201 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 37,869 psi | 58% | 2218 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 33,765 psi | 52% | 2172 fps | 96.7% |
| Norma URP | <<locked>> | 92% | 35,824 psi | 55% | 2257 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 33,127 psi | 51% | 2178 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 98% | 42,757 psi | 66% | 2385 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 40,350 psi | 62% | 2251 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,581 psi | 61% | 2274 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,830 psi | 67% | 2293 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 40% | 1335 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,672 psi | 70% | 2329 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,786 psi | 66% | 2306 fps | 95.4% |
| ReloadSwiss RS 52 | 46.6 gr | 80% | 35,563 psi | 55% | 2264 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,254 psi | 45% | 2142 fps | 97.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 34,969 psi | 54% | 2267 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 38,479 psi | 59% | 2326 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 41,147 psi | 63% | 2241 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,781 psi | 55% | 2162 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 29,051 psi | 45% | 2073 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 47,747 psi | 73% | 2375 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,248 psi | 62% | 2264 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,825 psi | 57% | 2224 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,011 psi | 52% | 2146 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 43,047 psi | 66% | 2329 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,109 psi | 74% | 2343 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,404 psi | 84% | 2113 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,097 psi | 79% | 2411 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,487 psi | 47% | 2119 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,385 psi | 74% | 2326 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,319 psi | 59% | 2224 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,115 psi | 57% | 2215 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,334 psi | 61% | 2169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,242 psi | 50% | 2054 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 45,382 psi | 70% | 2310 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 43,395 psi | 67% | 2320 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 38,798 psi | 60% | 2175 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,029 psi | 59% | 2224 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 30,226 psi | 47% | 2087 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 26,252 psi | 40% | 2064 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 55,448 psi | 85% | 2300 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 44,686 psi | 69% | 2228 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,537 psi | 61% | 2169 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,722 psi | 53% | 2152 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,723 psi | 55% | 2159 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 28,660 psi | 44% | 2034 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 90% | 35,259 psi | 54% | 2211 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 40,480 psi | 62% | 2251 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,301 psi | 53% | 2149 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 36,796 psi | 57% | 2260 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 32,082 psi | 49% | 2231 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,472 psi | 45% | 2057 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,494 psi | 61% | 2287 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 44,048 psi | 68% | 2402 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,085 psi | 56% | 2215 fps | 97.9% |
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 111 powders for .338 Weatherby RPM loaded with the .338 | 240gr | Lehigh Defense Match Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,641 fps; across all powders the maximum-charge window runs from 1,460 fps to 2,641 fps. Accurate 4350 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 240.0 gr projectile in 0.338" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 CFE223, ReloadSwiss RS 52 rank at the top here: for .338 Weatherby RPM with the .338 | 240gr | Lehigh Defense Match Solid 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.