Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:230 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:1:11.5
Load data in caliber .338 Weatherby RPM with .338 | 230gr | 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% | 57,174 psi | 88% | 2490 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,406 psi | 88% | 2585 fps | 99.7% |
| Accurate 2230 | <<locked>> | 82% | 58,813 psi | 90% | 2602 fps | 99.9% |
| Accurate 2460 | <<locked>> | 86% | 55,709 psi | 86% | 2520 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 57,914 psi | 89% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,332 psi | 85% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,332 psi | 85% | 2562 fps | 100% |
| Accurate 2700 | <<locked>> | 98% | 56,260 psi | 87% | 2507 fps | 96.4% |
| Accurate 4064 | <<locked>> | 98% | 57,377 psi | 88% | 2585 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,093 psi | 71% | 2510 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 84% | 57,159 psi | 88% | 2441 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,609 psi | 89% | 2467 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,028 psi | 86% | 2582 fps | 99.9% |
| ADI AR 2207 | <<locked>> | 82% | 58,769 psi | 90% | 2451 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 57,276 psi | 88% | 2579 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 84% | 58,073 psi | 89% | 2556 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,608 psi | 86% | 2543 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,608 psi | 86% | 2516 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 57,493 psi | 88% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,811 psi | 86% | 2690 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,347 psi | 87% | 2595 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,058 psi | 88% | 2493 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 57,392 psi | 88% | 2618 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,195 psi | 71% | 2520 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,505 psi | 82% | 2661 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,101 psi | 86% | 2444 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,970 psi | 86% | 2598 fps | 99.5% |
| Bofors RP3 | <<locked>> | 98% | 56,913 psi | 88% | 2612 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,027 psi | 83% | 2530 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 57,812 psi | 89% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 57,943 psi | 89% | 2615 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,304 psi | 87% | 2657 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 88% | 55,550 psi | 85% | 2526 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,290 psi | 88% | 2562 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 58,566 psi | 90% | 2625 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,492 psi | 85% | 2641 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 82% | 55,579 psi | 86% | 2441 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 56,594 psi | 87% | 2592 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,206 psi | 65% | 2411 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,332 psi | 85% | 2618 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 53% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 56,971 psi | 88% | 2579 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 57,624 psi | 89% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,637 psi | 86% | 2549 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 98% | 55,535 psi | 85% | 2523 fps | 97.2% |
| IMR 4198 | <<locked>> | 86% | 57,711 psi | 89% | 2457 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,362 psi | 87% | 2562 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,117 psi | 60% | 2372 fps | 96.7% |
| IMR 4895 | <<locked>> | 94% | 55,085 psi | 85% | 2598 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 55,608 psi | 86% | 2543 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,564 psi | 85% | 2530 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,332 psi | 85% | 2562 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,463 psi | 87% | 2520 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 56,072 psi | 86% | 2559 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 2507 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,892 psi | 75% | 2487 fps | 96.3% |
| Norma 200 | <<locked>> | 82% | 56,811 psi | 87% | 2467 fps | 100% |
| Norma 201 | <<locked>> | 94% | 58,146 psi | 89% | 2575 fps | 100% |
| Norma 202 | <<locked>> | 94% | 58,784 psi | 90% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,478 psi | 87% | 2608 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 46,369 psi | 71% | 2507 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 96% | 57,000 psi | 88% | 2631 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,629 psi | 70% | 2497 fps | 96.2% |
| Ramshot TAC | <<locked>> | 90% | 56,188 psi | 86% | 2562 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,347 psi | 85% | 2579 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,971 psi | 88% | 2549 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 54% | 1542 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,201 psi | 85% | 2526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,376 psi | 85% | 2559 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 57,696 psi | 89% | 2680 fps | 99.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 57,232 psi | 88% | 2713 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,021 psi | 71% | 2530 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,166 psi | 73% | 2552 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 90% | 55,753 psi | 86% | 2513 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 58,653 psi | 90% | 2572 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,434 psi | 87% | 2598 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,027 psi | 83% | 2530 fps | 96.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,430 psi | 79% | 2507 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,332 psi | 85% | 2562 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,072 psi | 86% | 2559 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,892 psi | 75% | 2487 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,274 psi | 85% | 2503 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,058 psi | 88% | 2205 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 58,088 psi | 89% | 2566 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 58,653 psi | 90% | 2661 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 58,247 psi | 90% | 2513 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 58,044 psi | 89% | 2589 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 58,247 psi | 90% | 2605 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,029 psi | 88% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,623 psi | 87% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,909 psi | 80% | 2464 fps | 96.5% |
| Somchem S321 | <<locked>> | 88% | 56,782 psi | 87% | 2575 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,028 psi | 86% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 57,276 psi | 88% | 2579 fps | 99.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,855 psi | 87% | 2595 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,118 psi | 63% | 2461 fps | 99.6% |
| Unknown powderᴾ | <<locked>> | 100% | 50,908 psi | 78% | 2566 fps | 98.4% |
| Vihtavuori N120 | <<locked>> | 82% | 58,595 psi | 90% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 56,869 psi | 87% | 2448 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,043 psi | 88% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 57,769 psi | 89% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,782 psi | 86% | 2513 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,259 psi | 85% | 2536 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,820 psi | 75% | 2507 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 90% | 56,318 psi | 87% | 2543 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 57,450 psi | 88% | 2559 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,877 psi | 74% | 2513 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,111 psi | 77% | 2500 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 56,260 psi | 87% | 2595 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,492 psi | 85% | 2641 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,159 psi | 86% | 2589 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% | 41,742 psi | 64% | 2287 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,983 psi | 83% | 2539 fps | 99.4% |
| Accurate 2230 | <<locked>> | 80% | 54,665 psi | 84% | 2549 fps | 99.6% |
| Accurate 2460 | <<locked>> | 80% | 45,411 psi | 70% | 2382 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,794 psi | 52% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,131 psi | 60% | 2326 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 39,131 psi | 60% | 2326 fps | 99.8% |
| Accurate 2700 | <<locked>> | 94% | 49,342 psi | 76% | 2415 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 31,981 psi | 49% | 2192 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 34,621 psi | 53% | 2303 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,444 psi | 78% | 2359 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,836 psi | 78% | 2382 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,522 psi | 59% | 2303 fps | 97.7% |
| ADI AR 2207 | <<locked>> | 80% | 55,259 psi | 85% | 2411 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 32,764 psi | 50% | 2169 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 50,734 psi | 78% | 2467 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,596 psi | 62% | 2316 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 39,581 psi | 61% | 2310 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,123 psi | 72% | 2490 fps | 99.6% |
| Alliant Power Pro 2000-MR | 49.7 gr | 80% | 34,606 psi | 53% | 2306 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,720 psi | 49% | 2182 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,442 psi | 73% | 2372 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,374 psi | 53% | 2238 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,013 psi | 55% | 2323 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,270 psi | 48% | 2241 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,385 psi | 76% | 2359 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,318 psi | 57% | 2297 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 30,893 psi | 48% | 2178 fps | 96.5% |
| Bofors RP7 | <<locked>> | 96% | 47,616 psi | 73% | 2434 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,482 psi | 65% | 2306 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,508 psi | 59% | 2326 fps | 99.2% |
| Hodgdon CFE223 | 50.9 gr | 80% | 42,569 psi | 65% | 2451 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 43,004 psi | 66% | 2356 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,777 psi | 77% | 2467 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 36,593 psi | 56% | 2277 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 94% | 45,179 psi | 70% | 2484 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 52,286 psi | 80% | 2402 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 38,783 psi | 60% | 2313 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,835 psi | 47% | 2182 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,677 psi | 50% | 2234 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,628 psi | 39% | 1342 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,534 psi | 53% | 2211 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 34,490 psi | 53% | 2254 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,053 psi | 49% | 2146 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 92% | 46,543 psi | 72% | 2388 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 48,225 psi | 74% | 2343 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 46,992 psi | 72% | 2425 fps | 95.4% |
| IMR 4831 | <<locked>> | 96% | 34,505 psi | 53% | 2280 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,157 psi | 54% | 2267 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 40,596 psi | 62% | 2316 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 45,034 psi | 69% | 2385 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 36,709 psi | 56% | 2283 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 39,233 psi | 60% | 2254 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 33,895 psi | 52% | 2201 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 40,292 psi | 62% | 2323 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 45,803 psi | 70% | 2438 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 53,200 psi | 82% | 2425 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,420 psi | 58% | 2257 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 37,710 psi | 58% | 2274 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 33,750 psi | 52% | 2228 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 35,824 psi | 55% | 2313 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,156 psi | 51% | 2234 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 42,757 psi | 66% | 2448 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 40,350 psi | 62% | 2313 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,349 psi | 61% | 2329 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,845 psi | 67% | 2356 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,802 psi | 40% | 1375 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,614 psi | 70% | 2392 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,743 psi | 66% | 2365 fps | 95.1% |
| ReloadSwiss RS 52 | 48.2 gr | 80% | 35,433 psi | 55% | 2320 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,138 psi | 45% | 2195 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,347 psi | 57% | 2375 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 41,133 psi | 63% | 2441 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 41,118 psi | 63% | 2303 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,694 psi | 55% | 2218 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 28,906 psi | 44% | 2126 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 96% | 47,616 psi | 73% | 2434 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,292 psi | 62% | 2323 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,709 psi | 56% | 2283 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 33,895 psi | 52% | 2201 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 45,803 psi | 70% | 2438 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,124 psi | 74% | 2405 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,360 psi | 84% | 2175 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,850 psi | 78% | 2474 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,474 psi | 50% | 2224 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,327 psi | 74% | 2392 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,087 psi | 59% | 2280 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,057 psi | 57% | 2274 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,291 psi | 60% | 2228 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,227 psi | 50% | 2110 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 45,440 psi | 70% | 2369 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 43,352 psi | 67% | 2382 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 38,638 psi | 59% | 2231 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,000 psi | 58% | 2287 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 30,124 psi | 46% | 2136 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 27,876 psi | 43% | 2162 fps | 95.8% |
| Unknown powder | <<locked>> | 92% | 39,189 psi | 60% | 2369 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 55,129 psi | 85% | 2365 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 44,657 psi | 69% | 2290 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,494 psi | 61% | 2228 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,664 psi | 53% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,534 psi | 55% | 2215 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,500 psi | 44% | 2083 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 35,288 psi | 54% | 2270 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 40,480 psi | 62% | 2310 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 34,243 psi | 53% | 2205 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 36,637 psi | 56% | 2316 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,415 psi | 48% | 2159 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 42,583 psi | 66% | 2402 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 45,179 psi | 70% | 2484 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,121 psi | 69% | 2434 fps | 99.3% |
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 | 230gr | Lehigh Defense Match Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,713 fps; across all powders the maximum-charge window runs from 1,506 fps to 2,713 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 53–90 %, leaving at least 10 % headroom. The 230.0 gr projectile in 0.338" calls for a 1:11.5 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 | 230gr | 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.