Load Specifications
Bullet Manufacturer:Rhino Bullets
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:1:15.0
Load data in caliber .338 Weatherby RPM with .338 | 210gr | Rhino Penetrator 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 52 and ReloadSwiss RS 60.
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% | 56,420 psi | 87% | 2635 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 58,711 psi | 90% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,972 psi | 89% | 2700 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,724 psi | 87% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 58,073 psi | 89% | 2697 fps | 96.5% |
| Accurate 4064 | <<locked>> | 96% | 57,464 psi | 88% | 2740 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,719 psi | 76% | 2710 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 82% | 55,753 psi | 86% | 2582 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,231 psi | 87% | 2605 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,448 psi | 85% | 2726 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 56,449 psi | 87% | 2726 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 56,913 psi | 88% | 2700 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 58,175 psi | 89% | 2730 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 58,523 psi | 90% | 2707 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,405 psi | 87% | 2785 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,926 psi | 85% | 2838 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,956 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,405 psi | 87% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,739 psi | 87% | 2766 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,747 psi | 75% | 2713 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,492 psi | 87% | 2858 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,606 psi | 53% | 2451 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 58,552 psi | 90% | 2625 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,114 psi | 85% | 2743 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 56,565 psi | 87% | 2762 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,029 psi | 88% | 2723 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,594 psi | 87% | 2667 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,305 psi | 88% | 2762 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,405 psi | 85% | 2805 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 55,492 psi | 85% | 2680 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,376 psi | 87% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,783 psi | 89% | 2772 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,113 psi | 82% | 2759 fps | 96.7% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 2776 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 55,985 psi | 86% | 2740 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,947 psi | 69% | 2602 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 58,653 psi | 90% | 2818 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,346 psi | 84% | 2792 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 54% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,363 psi | 88% | 2740 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,405 psi | 85% | 2723 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,898 psi | 86% | 2707 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,507 psi | 87% | 2690 fps | 97.1% |
| IMR 4198 | <<locked>> | 84% | 56,391 psi | 87% | 2598 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,521 psi | 85% | 2707 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,094 psi | 72% | 2651 fps | 98.2% |
| IMR 4895 | <<locked>> | 94% | 58,146 psi | 89% | 2795 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 58,175 psi | 89% | 2730 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 58,798 psi | 90% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 58,566 psi | 90% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,405 psi | 85% | 2661 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 55,361 psi | 85% | 2703 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,520 psi | 84% | 2700 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,895 psi | 80% | 2680 fps | 96.6% |
| Norma 201 | <<locked>> | 92% | 57,653 psi | 89% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 92% | 58,059 psi | 89% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,883 psi | 86% | 2756 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 49,327 psi | 76% | 2700 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 94% | 56,536 psi | 87% | 2782 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,428 psi | 75% | 2690 fps | 96.6% |
| Ramshot TAC | <<locked>> | 88% | 55,201 psi | 85% | 2700 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 58,131 psi | 89% | 2769 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,970 psi | 86% | 2690 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 54% | 1663 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,914 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 58,436 psi | 90% | 2753 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,927 psi | 88% | 2828 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,463 psi | 87% | 2864 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,269 psi | 76% | 2726 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,995 psi | 77% | 2749 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 90% | 58,697 psi | 90% | 2707 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,972 psi | 89% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,144 psi | 86% | 2749 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,029 psi | 88% | 2723 fps | 96.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,520 psi | 84% | 2700 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 92% | 58,566 psi | 90% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,361 psi | 85% | 2703 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,895 psi | 80% | 2680 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,885 psi | 89% | 2694 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 58,798 psi | 90% | 2372 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,217 psi | 88% | 2713 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,943 psi | 89% | 2808 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,319 psi | 88% | 2661 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,884 psi | 88% | 2726 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,276 psi | 88% | 2749 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,101 psi | 86% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,898 psi | 86% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,085 psi | 85% | 2654 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 55,840 psi | 86% | 2717 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 58,639 psi | 90% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,362 psi | 87% | 2720 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 56,623 psi | 87% | 2746 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,888 psi | 68% | 2651 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,028 psi | 86% | 2589 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,115 psi | 86% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,377 psi | 88% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 58,581 psi | 90% | 2703 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 58,407 psi | 90% | 2730 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,895 psi | 80% | 2700 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 90% | 58,813 psi | 90% | 2730 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,695 psi | 87% | 2703 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,923 psi | 78% | 2703 fps | 98.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,782 psi | 57% | 2523 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,808 psi | 81% | 2687 fps | 99.9% |
| Winchester 748 | <<locked>> | 90% | 58,363 psi | 90% | 2779 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,113 psi | 82% | 2759 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,072 psi | 88% | 2756 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% | 44,208 psi | 68% | 2464 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,051 psi | 74% | 2566 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,680 psi | 56% | 2385 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,134 psi | 66% | 2523 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 51,010 psi | 78% | 2592 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 34,708 psi | 53% | 2372 fps | 99.6% |
| Accurate 4350 | <<locked>> | 92% | 37,565 psi | 58% | 2493 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 52,373 psi | 81% | 2536 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,779 psi | 81% | 2559 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,495 psi | 62% | 2477 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,534 psi | 53% | 2336 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 53,055 psi | 82% | 2651 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,540 psi | 65% | 2490 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,018 psi | 65% | 2487 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,458 psi | 76% | 2680 fps | 99.6% |
| Alliant Power Pro 2000-MR | 55.1 gr | 80% | 36,564 psi | 56% | 2487 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,837 psi | 52% | 2352 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,792 psi | 77% | 2552 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,361 psi | 56% | 2411 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,013 psi | 55% | 2454 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,315 psi | 51% | 2418 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,518 psi | 50% | 2398 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,576 psi | 79% | 2536 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,566 psi | 61% | 2477 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 33,185 psi | 51% | 2352 fps | 96.8% |
| Bofors RP7 | <<locked>> | 96% | 50,256 psi | 77% | 2621 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,483 psi | 68% | 2484 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,901 psi | 63% | 2507 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,904 psi | 69% | 2635 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 48,704 psi | 75% | 2589 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,487 psi | 76% | 2612 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,030 psi | 60% | 2457 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 46,456 psi | 71% | 2648 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 98% | 54,404 psi | 84% | 2726 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 40,843 psi | 63% | 2490 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,937 psi | 48% | 2303 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,666 psi | 56% | 2454 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 98% | 50,691 psi | 78% | 2733 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 40% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,378 psi | 61% | 2448 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 40,118 psi | 62% | 2490 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,216 psi | 56% | 2365 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,934 psi | 72% | 2539 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,227 psi | 77% | 2520 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,284 psi | 76% | 2608 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 36,376 psi | 56% | 2448 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,217 psi | 57% | 2441 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 80% | 42,540 psi | 65% | 2490 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 47,906 psi | 74% | 2572 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,189 psi | 60% | 2461 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,017 psi | 63% | 2421 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 35,984 psi | 55% | 2372 fps | 97.9% |
| Lovex S065 | <<locked>> | 92% | 42,685 psi | 66% | 2503 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 45,701 psi | 70% | 2579 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,755 psi | 61% | 2438 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 39,958 psi | 61% | 2451 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,752 psi | 55% | 2402 fps | 96.6% |
| Norma URP | <<locked>> | 92% | 37,985 psi | 58% | 2490 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,186 psi | 54% | 2408 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 98% | 45,295 psi | 70% | 2635 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 42,540 psi | 65% | 2490 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,756 psi | 64% | 2510 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,977 psi | 71% | 2533 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 41% | 1486 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,659 psi | 73% | 2569 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,121 psi | 69% | 2546 fps | 95.4% |
| ReloadSwiss RS 52 | 53.4 gr | 80% | 37,637 psi | 58% | 2500 fps | 96.5% |
| ReloadSwiss RS 60 | 54.3 gr | 80% | 31,140 psi | 48% | 2372 fps | 97.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,420 psi | 58% | 2507 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,973 psi | 63% | 2575 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 43,584 psi | 67% | 2480 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,956 psi | 58% | 2392 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 31,285 psi | 48% | 2303 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 50,256 psi | 77% | 2621 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,685 psi | 66% | 2503 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,189 psi | 60% | 2461 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 35,984 psi | 55% | 2372 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 96% | 45,701 psi | 70% | 2579 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,459 psi | 78% | 2589 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 56,043 psi | 86% | 2339 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,490 psi | 82% | 2664 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,256 psi | 50% | 2343 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,546 psi | 78% | 2572 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,538 psi | 62% | 2461 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,044 psi | 60% | 2448 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,321 psi | 64% | 2402 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,098 psi | 52% | 2274 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,196 psi | 74% | 2552 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 45,847 psi | 71% | 2566 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 40,872 psi | 63% | 2405 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,321 psi | 62% | 2464 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 32,256 psi | 50% | 2310 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 28,137 psi | 43% | 2287 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,775 psi | 72% | 2464 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,524 psi | 64% | 2398 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,927 psi | 57% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,797 psi | 58% | 2388 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,647 psi | 47% | 2254 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 90% | 37,521 psi | 58% | 2444 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,583 psi | 66% | 2487 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,376 psi | 56% | 2379 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 36,825 psi | 57% | 2448 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 34,490 psi | 53% | 2470 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,256 psi | 48% | 2277 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 41,829 psi | 64% | 2530 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 46,688 psi | 72% | 2654 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,218 psi | 59% | 2448 fps | 97.8% |
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 | Rhino Penetrator. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,864 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 53–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" calls for a 1:15.0 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 52, ReloadSwiss RS 60 rank at the top here: for .338 Weatherby RPM with the .338 | 210gr | Rhino Penetrator 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.