Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:210 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:1:16.5
Load data in caliber .338 Weatherby RPM with .338 | 210gr | Nosler Partition bullet and 107 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 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>> | 88% | 57,856 psi | 89% | 2661 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,434 psi | 87% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,956 psi | 86% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 58,262 psi | 90% | 2749 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,956 psi | 86% | 2680 fps | 96.4% |
| Accurate 4064 | <<locked>> | 94% | 55,695 psi | 86% | 2726 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,343 psi | 79% | 2743 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 56,913 psi | 88% | 2608 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,363 psi | 88% | 2635 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,898 psi | 88% | 2759 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 57,725 psi | 89% | 2756 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 58,334 psi | 90% | 2730 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,115 psi | 86% | 2717 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,623 psi | 87% | 2690 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,899 psi | 89% | 2818 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,420 psi | 87% | 2874 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 57,377 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,711 psi | 89% | 2667 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 58,363 psi | 90% | 2799 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,125 psi | 77% | 2749 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 58,363 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,592 psi | 55% | 2487 fps | 96.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,014 psi | 86% | 2605 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,594 psi | 87% | 2772 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 58,262 psi | 90% | 2795 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 58,479 psi | 90% | 2756 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 58,059 psi | 89% | 2700 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,216 psi | 85% | 2746 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 57,217 psi | 88% | 2841 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 56,942 psi | 88% | 2710 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,870 psi | 89% | 2736 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,724 psi | 86% | 2753 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,737 psi | 84% | 2795 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 98% | 55,811 psi | 86% | 2759 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 57,450 psi | 88% | 2772 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,311 psi | 71% | 2635 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,637 psi | 87% | 2802 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 56,086 psi | 86% | 2835 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 54% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 58,755 psi | 90% | 2772 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 57,188 psi | 88% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,276 psi | 88% | 2740 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,711 psi | 89% | 2720 fps | 97.5% |
| IMR 4198 | <<locked>> | 84% | 57,493 psi | 88% | 2621 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,547 psi | 79% | 2680 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,869 psi | 87% | 2740 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,805 psi | 75% | 2687 fps | 98.6% |
| IMR 4895 | <<locked>> | 92% | 56,072 psi | 86% | 2779 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 56,115 psi | 86% | 2717 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,405 psi | 87% | 2703 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,376 psi | 87% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,768 psi | 87% | 2690 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 57,043 psi | 88% | 2740 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,970 psi | 86% | 2733 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,229 psi | 82% | 2713 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 55,579 psi | 86% | 2707 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,043 psi | 86% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,493 psi | 88% | 2789 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,778 psi | 78% | 2736 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 94% | 58,001 psi | 89% | 2812 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,850 psi | 77% | 2726 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 56,391 psi | 87% | 2730 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,927 psi | 86% | 2753 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 57,217 psi | 88% | 2720 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 55% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,637 psi | 86% | 2697 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,347 psi | 87% | 2736 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 58,798 psi | 90% | 2867 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 58,204 psi | 90% | 2897 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,937 psi | 78% | 2766 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,547 psi | 79% | 2789 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 88% | 56,521 psi | 87% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,941 psi | 86% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 57,798 psi | 89% | 2782 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 58,479 psi | 90% | 2756 fps | 97.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,970 psi | 86% | 2733 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,376 psi | 87% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 57,043 psi | 88% | 2740 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,229 psi | 82% | 2713 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,259 psi | 85% | 2667 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 58,465 psi | 90% | 2740 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,130 psi | 86% | 2795 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 58,668 psi | 90% | 2687 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 58,711 psi | 90% | 2766 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 58,813 psi | 90% | 2782 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,392 psi | 88% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 57,290 psi | 88% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,753 psi | 87% | 2690 fps | 97.3% |
| Somchem S321 | <<locked>> | 86% | 57,464 psi | 88% | 2749 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,594 psi | 87% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,856 psi | 89% | 2753 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 58,233 psi | 90% | 2779 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,440 psi | 70% | 2687 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 57,188 psi | 88% | 2615 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,421 psi | 88% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,448 psi | 85% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,724 psi | 87% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,246 psi | 87% | 2713 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,388 psi | 82% | 2733 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 56,623 psi | 87% | 2713 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 58,218 psi | 90% | 2733 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,518 psi | 81% | 2740 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,087 psi | 59% | 2559 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,302 psi | 84% | 2720 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 56,260 psi | 87% | 2762 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,737 psi | 84% | 2795 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 92% | 58,697 psi | 90% | 2789 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% | 45,208 psi | 70% | 2490 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,385 psi | 76% | 2595 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,884 psi | 58% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,425 psi | 68% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,373 psi | 81% | 2628 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 35,839 psi | 55% | 2402 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 36,376 psi | 56% | 2474 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 53,519 psi | 82% | 2562 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,925 psi | 83% | 2589 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,713 psi | 64% | 2510 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 35,476 psi | 55% | 2365 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 80% | 54,462 psi | 84% | 2680 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,772 psi | 67% | 2523 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 43,366 psi | 67% | 2513 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,010 psi | 78% | 2717 fps | 99.8% |
| Alliant Power Pro 2000-MR | 56.6 gr | 80% | 37,536 psi | 58% | 2520 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,824 psi | 54% | 2385 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,865 psi | 78% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,536 psi | 58% | 2444 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,869 psi | 57% | 2484 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,952 psi | 49% | 2392 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,546 psi | 49% | 2385 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,649 psi | 81% | 2562 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,596 psi | 62% | 2507 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 34,171 psi | 53% | 2385 fps | 97.3% |
| Bofors RP7 | <<locked>> | 94% | 48,559 psi | 75% | 2608 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,498 psi | 70% | 2513 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,105 psi | 65% | 2536 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,166 psi | 71% | 2667 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 49,908 psi | 77% | 2615 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,720 psi | 78% | 2638 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 37,695 psi | 58% | 2441 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 44,918 psi | 69% | 2635 fps | 95% |
| Hodgdon H4350 | <<locked>> | 96% | 52,504 psi | 81% | 2707 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,090 psi | 65% | 2523 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,792 psi | 49% | 2336 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,797 psi | 58% | 2487 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 96% | 48,486 psi | 75% | 2710 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 40% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,379 psi | 62% | 2474 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 41,423 psi | 64% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,173 psi | 57% | 2395 fps | 96.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,979 psi | 74% | 2569 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 51,401 psi | 79% | 2543 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,515 psi | 75% | 2631 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,500 psi | 73% | 2592 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 35,244 psi | 54% | 2434 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,435 psi | 59% | 2474 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 43,772 psi | 67% | 2523 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 49,124 psi | 76% | 2602 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,451 psi | 62% | 2493 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 42,003 psi | 65% | 2454 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 36,999 psi | 57% | 2402 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 41,307 psi | 64% | 2487 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 44,309 psi | 68% | 2562 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,828 psi | 63% | 2467 fps | 99% |
| Norma 202 | <<locked>> | 80% | 40,988 psi | 63% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,927 psi | 57% | 2434 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 36,767 psi | 57% | 2474 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,172 psi | 56% | 2441 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 43,947 psi | 68% | 2621 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 43,511 psi | 67% | 2520 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,844 psi | 66% | 2539 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,108 psi | 72% | 2562 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 41% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,965 psi | 75% | 2602 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,352 psi | 67% | 2526 fps | 95.1% |
| ReloadSwiss RS 52 | 54.9 gr | 80% | 38,914 psi | 60% | 2536 fps | 97.1% |
| ReloadSwiss RS 60 | 55.8 gr | 80% | 32,039 psi | 49% | 2408 fps | 98.2% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,332 psi | 56% | 2493 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,349 psi | 61% | 2552 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,744 psi | 69% | 2510 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,798 psi | 60% | 2418 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 32,256 psi | 50% | 2333 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 48,559 psi | 75% | 2608 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,307 psi | 64% | 2487 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,451 psi | 62% | 2493 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,999 psi | 57% | 2402 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 94% | 44,309 psi | 68% | 2562 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,692 psi | 80% | 2618 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 54,766 psi | 84% | 2690 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,228 psi | 51% | 2375 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,880 psi | 80% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,597 psi | 64% | 2490 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,132 psi | 62% | 2477 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,395 psi | 65% | 2431 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,070 psi | 54% | 2303 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 46,528 psi | 72% | 2536 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 47,007 psi | 72% | 2595 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,901 psi | 64% | 2431 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,365 psi | 64% | 2493 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 33,214 psi | 51% | 2339 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 27,238 psi | 42% | 2267 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 47,964 psi | 74% | 2493 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,627 psi | 66% | 2428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,130 psi | 59% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,812 psi | 60% | 2418 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,560 psi | 49% | 2283 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 88% | 36,274 psi | 56% | 2428 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,598 psi | 67% | 2513 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 37,289 psi | 57% | 2405 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 37,942 psi | 58% | 2480 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 96% | 33,489 psi | 52% | 2454 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,111 psi | 49% | 2310 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 42,873 psi | 66% | 2556 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 45,136 psi | 69% | 2638 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,334 psi | 61% | 2480 fps | 98.3% |
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 107 powders for .338 Weatherby RPM loaded with the .338 | 210gr | Nosler Partition. Alliant Reloder-17 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,897 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:16.5 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, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .338 Weatherby RPM with the .338 | 210gr | Nosler Partition 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.