Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:232 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:1:13.0
Load data in caliber .338 Weatherby RPM with .338 | 232gr | Lehigh Defense Controlled Fracturing bullet and 110 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 60 and Ramshot Big Game.
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>> | 88% | 56,202 psi | 86% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 58,262 psi | 90% | 2552 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,072 psi | 88% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 58,392 psi | 90% | 2602 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 58,392 psi | 90% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 55,187 psi | 85% | 2507 fps | 96.7% |
| Accurate 4064 | <<locked>> | 96% | 56,884 psi | 88% | 2582 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,240 psi | 76% | 2559 fps | 99% |
| Accurate LT-30 | <<locked>> | 82% | 55,579 psi | 86% | 2431 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 58,682 psi | 90% | 2621 fps | 100% |
| ADI AR 2208 | <<locked>> | 96% | 56,086 psi | 86% | 2572 fps | 99.8% |
| ADI AR 2219 | <<locked>> | 82% | 56,710 psi | 87% | 2546 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,972 psi | 89% | 2579 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 58,334 psi | 90% | 2549 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,362 psi | 87% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 58,784 psi | 90% | 2740 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,593 psi | 86% | 2592 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,014 psi | 86% | 2484 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,362 psi | 87% | 2612 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,501 psi | 75% | 2569 fps | 99.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,507 psi | 87% | 2707 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,098 psi | 52% | 2323 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 58,494 psi | 90% | 2474 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,100 psi | 85% | 2595 fps | 99.6% |
| Bofors RP3 | <<locked>> | 96% | 56,101 psi | 86% | 2605 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 2579 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,550 psi | 87% | 2520 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,116 psi | 88% | 2612 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,434 psi | 85% | 2651 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 88% | 57,957 psi | 89% | 2559 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,854 psi | 86% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,508 psi | 88% | 2618 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 58,595 psi | 90% | 2690 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 82% | 57,464 psi | 88% | 2470 fps | 100% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 52,170 psi | 80% | 2549 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 90% | 55,695 psi | 86% | 2585 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,541 psi | 69% | 2457 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 58,247 psi | 90% | 2661 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,099 psi | 83% | 2648 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 54% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,941 psi | 86% | 2572 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 56,971 psi | 88% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 58,204 psi | 90% | 2589 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 98% | 58,117 psi | 89% | 2569 fps | 98% |
| IMR 4198 | <<locked>> | 84% | 56,405 psi | 87% | 2444 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,980 psi | 77% | 2503 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,521 psi | 85% | 2562 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,568 psi | 64% | 2421 fps | 97.7% |
| IMR 4895 | <<locked>> | 94% | 57,783 psi | 89% | 2638 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 57,972 psi | 89% | 2579 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 58,276 psi | 90% | 2566 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 58,131 psi | 89% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 58,682 psi | 90% | 2556 fps | 100% |
| Lovex S062 | <<locked>> | 96% | 58,682 psi | 90% | 2598 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,186 psi | 83% | 2552 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,329 psi | 79% | 2533 fps | 97.2% |
| Norma 201 | <<locked>> | 92% | 57,188 psi | 88% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,827 psi | 89% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,434 psi | 85% | 2598 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 48,892 psi | 75% | 2552 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 94% | 56,347 psi | 87% | 2628 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,196 psi | 74% | 2549 fps | 97.3% |
| Ramshot TAC | <<locked>> | 90% | 58,682 psi | 90% | 2602 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 58,015 psi | 89% | 2618 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,637 psi | 86% | 2539 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 54% | 1555 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,696 psi | 89% | 2562 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 58,189 psi | 90% | 2605 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 57,029 psi | 88% | 2677 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,333 psi | 87% | 2707 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,950 psi | 75% | 2582 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,603 psi | 76% | 2602 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 90% | 58,117 psi | 89% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,609 psi | 89% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,622 psi | 86% | 2595 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,782 psi | 87% | 2579 fps | 97.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,186 psi | 83% | 2552 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 58,131 psi | 89% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 58,682 psi | 90% | 2598 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,329 psi | 79% | 2533 fps | 97.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,609 psi | 89% | 2539 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 58,653 psi | 90% | 2224 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,985 psi | 88% | 2559 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,899 psi | 89% | 2657 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,159 psi | 88% | 2507 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,695 psi | 87% | 2579 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,334 psi | 88% | 2602 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,840 psi | 86% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,782 psi | 86% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,766 psi | 84% | 2510 fps | 97.5% |
| Somchem S321 | <<locked>> | 86% | 55,796 psi | 86% | 2569 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 58,291 psi | 90% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,304 psi | 87% | 2572 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 56,318 psi | 87% | 2595 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,656 psi | 67% | 2510 fps | 99.9% |
| Unknown powderᴾ | <<locked>> | 100% | 53,795 psi | 83% | 2612 fps | 99% |
| Vihtavuori N130 | <<locked>> | 86% | 55,956 psi | 86% | 2441 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,956 psi | 86% | 2457 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,985 psi | 88% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 58,392 psi | 90% | 2549 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,986 psi | 89% | 2575 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,677 psi | 80% | 2556 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 90% | 58,740 psi | 90% | 2579 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,492 psi | 87% | 2552 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,517 psi | 78% | 2556 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,303 psi | 56% | 2388 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,475 psi | 81% | 2543 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,390 psi | 85% | 2589 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 58,595 psi | 90% | 2690 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,056 psi | 85% | 2582 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% | 43,627 psi | 67% | 2316 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,645 psi | 73% | 2418 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,824 psi | 55% | 2241 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,263 psi | 63% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,263 psi | 63% | 2365 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 48,428 psi | 75% | 2411 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 33,910 psi | 52% | 2231 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 34,476 psi | 53% | 2303 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 52,446 psi | 81% | 2392 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,103 psi | 62% | 2336 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 34,200 psi | 53% | 2205 fps | 96% |
| ADI AR 2219 | <<locked>> | 80% | 52,866 psi | 81% | 2497 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,192 psi | 65% | 2349 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 41,916 psi | 64% | 2343 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,168 psi | 76% | 2530 fps | 99.8% |
| Alliant Power Pro 2000-MR | 51.7 gr | 80% | 36,216 psi | 56% | 2352 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,460 psi | 51% | 2224 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,516 psi | 76% | 2405 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,911 psi | 55% | 2277 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,460 psi | 51% | 2270 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,690 psi | 47% | 2234 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,095 psi | 46% | 2221 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,256 psi | 79% | 2388 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,102 psi | 60% | 2339 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 32,619 psi | 50% | 2221 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 46,963 psi | 72% | 2434 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,280 psi | 68% | 2343 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,480 psi | 62% | 2365 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,686 psi | 69% | 2490 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 44,875 psi | 69% | 2385 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,141 psi | 80% | 2503 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 35,984 psi | 55% | 2270 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 44,324 psi | 68% | 2477 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 54,230 psi | 83% | 2431 fps | 100% |
| Hodgdon H4350 | <<locked>> | 98% | 49,008 psi | 75% | 2503 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,422 psi | 62% | 2349 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,472 psi | 47% | 2178 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,258 psi | 53% | 2277 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 96% | 46,804 psi | 72% | 2533 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 40% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,230 psi | 56% | 2254 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 36,463 psi | 56% | 2290 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,576 psi | 52% | 2185 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 90% | 45,629 psi | 70% | 2382 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 50,082 psi | 77% | 2369 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 46,702 psi | 72% | 2454 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,195 psi | 71% | 2421 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 34,272 psi | 53% | 2280 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 36,767 psi | 57% | 2303 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 42,192 psi | 65% | 2349 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 47,413 psi | 73% | 2425 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,609 psi | 59% | 2320 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 40,698 psi | 63% | 2287 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 35,476 psi | 55% | 2238 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 39,639 psi | 61% | 2320 fps | 95.6% |
| Lovex S070 | <<locked>> | 94% | 42,467 psi | 65% | 2388 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,262 psi | 60% | 2297 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 39,595 psi | 61% | 2310 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,302 psi | 54% | 2264 fps | 97.2% |
| Norma URP | <<locked>> | 90% | 35,302 psi | 54% | 2310 fps | 95.7% |
| Ramshot Big Game | 51.7 gr | 80% | 34,795 psi | 54% | 2277 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 96% | 42,322 psi | 65% | 2448 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 42,061 psi | 65% | 2349 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,452 psi | 64% | 2372 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,687 psi | 70% | 2395 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 40% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,529 psi | 73% | 2428 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 41,945 psi | 65% | 2359 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,289 psi | 57% | 2362 fps | 97.2% |
| ReloadSwiss RS 60 | 50.9 gr | 80% | 30,603 psi | 47% | 2241 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,534 psi | 53% | 2320 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 37,913 psi | 58% | 2385 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 42,917 psi | 66% | 2336 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,289 psi | 57% | 2254 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 30,574 psi | 47% | 2169 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 46,963 psi | 72% | 2434 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,639 psi | 61% | 2320 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,609 psi | 59% | 2320 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 35,476 psi | 55% | 2238 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 42,467 psi | 65% | 2388 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,212 psi | 77% | 2444 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 55,709 psi | 86% | 2195 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,301 psi | 82% | 2513 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,821 psi | 49% | 2215 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,430 psi | 78% | 2425 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,132 psi | 62% | 2326 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,667 psi | 59% | 2310 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,973 psi | 63% | 2264 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,750 psi | 52% | 2146 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 44,817 psi | 69% | 2369 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 45,339 psi | 70% | 2421 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,451 psi | 62% | 2267 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,813 psi | 61% | 2323 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 31,763 psi | 49% | 2178 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 25,904 psi | 40% | 2113 fps | 95.1% |
| Unknown powder | <<locked>> | 88% | 36,318 psi | 56% | 2316 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 46,499 psi | 72% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,249 psi | 63% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,521 psi | 56% | 2244 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,347 psi | 57% | 2251 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,095 psi | 46% | 2126 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 34,780 psi | 54% | 2264 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,279 psi | 65% | 2346 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 35,868 psi | 55% | 2241 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 36,289 psi | 56% | 2313 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 31,821 psi | 49% | 2287 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,703 psi | 44% | 2100 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 44,715 psi | 69% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 44,324 psi | 68% | 2477 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,500 psi | 73% | 2477 fps | 99.7% |
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 110 powders for .338 Weatherby RPM loaded with the .338 | 232gr | Lehigh Defense Controlled Fracturing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,740 fps. Accurate 4350 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 52–90 %, 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 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, ReloadSwiss RS 60, Ramshot Big Game rank at the top here: for .338 Weatherby RPM 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.