Load Specifications
Load data in caliber .338 Weatherby RPM with .338 | 185gr | Fox Classic Hunter bullet and 90 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 Hodgdon CFE223.
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>> | 92% | 55,593 psi | 86% | 2799 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 56,550 psi | 87% | 2897 fps | 98.6% |
| Accurate 2230 | <<locked>> | 84% | 57,537 psi | 89% | 2907 fps | 98.9% |
| Accurate 2460 | <<locked>> | 90% | 57,885 psi | 89% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,550 psi | 85% | 2851 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,608 psi | 86% | 2877 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,940 psi | 85% | 2884 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 56,376 psi | 87% | 2753 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,811 psi | 87% | 2776 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 58,392 psi | 90% | 2933 fps | 99.3% |
| ADI AR 2207 | <<locked>> | 84% | 57,653 psi | 89% | 2772 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,854 psi | 86% | 2874 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 86% | 56,695 psi | 87% | 2871 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 57,725 psi | 89% | 2890 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 94% | 57,159 psi | 88% | 2877 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,564 psi | 85% | 2946 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 58,262 psi | 90% | 3041 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,534 psi | 84% | 2890 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,564 psi | 85% | 2808 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,463 psi | 85% | 2910 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,312 psi | 74% | 2881 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 84% | 58,581 psi | 90% | 2792 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,434 psi | 85% | 2749 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 58,421 psi | 90% | 2946 fps | 98.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,708 psi | 84% | 2904 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 56,536 psi | 87% | 2828 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,463 psi | 87% | 2920 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 92% | 58,610 psi | 90% | 3018 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 90% | 58,798 psi | 90% | 2900 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 56,217 psi | 86% | 2874 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,811 psi | 87% | 2913 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 84% | 58,508 psi | 90% | 2802 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 55,143 psi | 85% | 2890 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 57,319 psi | 88% | 2969 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,011 psi | 52% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 57,014 psi | 88% | 2897 fps | 99.5% |
| IMR 3031 | <<locked>> | 96% | 57,580 psi | 89% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,114 psi | 85% | 2854 fps | 98.7% |
| IMR 4198 | <<locked>> | 88% | 56,376 psi | 87% | 2772 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,826 psi | 87% | 2943 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 94% | 57,725 psi | 89% | 2890 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 84% | 58,131 psi | 89% | 2887 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 57,957 psi | 89% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 57,043 psi | 88% | 2907 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 58,740 psi | 90% | 2861 fps | 99.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 57,725 psi | 89% | 2904 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 55,448 psi | 85% | 2782 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,869 psi | 87% | 2877 fps | 99.8% |
| Norma 202 | <<locked>> | 96% | 57,261 psi | 88% | 2887 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 58,204 psi | 90% | 2953 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 98% | 55,288 psi | 85% | 2927 fps | 98.9% |
| Ramshot TAC | <<locked>> | 92% | 55,056 psi | 85% | 2848 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 57,609 psi | 89% | 2927 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,883 psi | 86% | 2844 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 53% | 1752 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 57,812 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 57,885 psi | 89% | 2897 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,448 psi | 85% | 2979 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,721 psi | 80% | 2953 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 57,421 psi | 88% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 56,898 psi | 88% | 2871 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,662 psi | 78% | 2835 fps | 99% |
| Shooters World AR Plus | <<locked>> | 84% | 58,131 psi | 89% | 2887 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 57,043 psi | 88% | 2907 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 57,725 psi | 89% | 2904 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 58,044 psi | 89% | 2851 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 56,739 psi | 87% | 2510 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 57,101 psi | 88% | 2884 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,142 psi | 82% | 2900 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 57,000 psi | 88% | 2835 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,608 psi | 87% | 2877 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,869 psi | 87% | 2904 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 56,101 psi | 86% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,419 psi | 85% | 2776 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,506 psi | 85% | 2877 fps | 99.8% |
| Somchem S335 | <<locked>> | 96% | 58,247 psi | 90% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 56,072 psi | 86% | 2874 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2838 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,956 psi | 57% | 2651 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 84% | 57,566 psi | 89% | 2720 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,869 psi | 86% | 2759 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,854 psi | 86% | 2776 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,869 psi | 86% | 2844 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 57,899 psi | 89% | 2864 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,922 psi | 77% | 2772 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 94% | 58,813 psi | 90% | 2897 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 55,941 psi | 86% | 2861 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,759 psi | 70% | 2713 fps | 97.9% |
| Winchester 748 | <<locked>> | 94% | 57,537 psi | 89% | 2940 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 56,434 psi | 87% | 2913 fps | 99.5% |
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% | 37,971 psi | 58% | 2516 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,385 psi | 76% | 2782 fps | 97.4% |
| Accurate 2230 | <<locked>> | 80% | 49,661 psi | 76% | 2785 fps | 97.8% |
| Accurate 2460 | <<locked>> | 80% | 41,176 psi | 63% | 2608 fps | 99.3% |
| Accurate 2495 | <<locked>> | 80% | 29,994 psi | 46% | 2402 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 36,492 psi | 56% | 2552 fps | 98.2% |
| Accurate 4064 | <<locked>> | 80% | 28,427 psi | 44% | 2375 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 80% | 46,775 psi | 72% | 2612 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,137 psi | 73% | 2631 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 37,275 psi | 57% | 2556 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 50,908 psi | 78% | 2684 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 40,901 psi | 63% | 2612 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 46,209 psi | 71% | 2717 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,927 psi | 57% | 2526 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 80% | 35,462 psi | 55% | 2543 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,453 psi | 65% | 2717 fps | 97.4% |
| Alliant Power Pro 2000-MR | 60.9 gr | 90% | 44,237 psi | 68% | 2792 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,577 psi | 53% | 2523 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,279 psi | 67% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,263 psi | 62% | 2641 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,956 psi | 57% | 2638 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,924 psi | 80% | 2703 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,672 psi | 70% | 2608 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 41,582 psi | 64% | 2664 fps | 95.2% |
| Bofors RP3 | <<locked>> | 86% | 33,765 psi | 52% | 2516 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,088 psi | 60% | 2530 fps | 97.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,592 psi | 53% | 2526 fps | 96.5% |
| Hodgdon CFE223 | 56.8 gr | 82% | 41,147 psi | 63% | 2713 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 42,235 psi | 65% | 2648 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 42,772 psi | 66% | 2661 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 94% | 46,354 psi | 71% | 2746 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 51,561 psi | 79% | 2707 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,070 psi | 54% | 2513 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,737 psi | 55% | 2575 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,092 psi | 39% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,245 psi | 56% | 2523 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 33,736 psi | 52% | 2526 fps | 99.4% |
| IMR 4064 | <<locked>> | 88% | 40,364 psi | 62% | 2598 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 44,541 psi | 69% | 2602 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 38,508 psi | 59% | 2618 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 36,927 psi | 57% | 2526 fps | 96.5% |
| Lovex D073.4 | <<locked>> | 80% | 50,444 psi | 78% | 2776 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 40,886 psi | 63% | 2608 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 32,837 psi | 51% | 2480 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 38,421 psi | 59% | 2513 fps | 95.6% |
| Lovex S062 | <<locked>> | 82% | 32,677 psi | 50% | 2444 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 48,762 psi | 75% | 2690 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,026 psi | 52% | 2461 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 34,142 psi | 53% | 2484 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 36,956 psi | 57% | 2575 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 88% | 39,233 psi | 60% | 2641 fps | 95.5% |
| Ramshot TAC | <<locked>> | 88% | 48,283 psi | 74% | 2736 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,406 psi | 59% | 2592 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,103 psi | 62% | 2569 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 39% | 1565 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,568 psi | 64% | 2621 fps | 98.9% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,215 psi | 83% | 2841 fps | 95.6% |
| ReloadSwiss RS 52 | 56.4 gr | 86% | 39,059 psi | 60% | 2680 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 32,387 psi | 50% | 2533 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,565 psi | 58% | 2523 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 32,372 psi | 50% | 2411 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 36,143 psi | 56% | 2562 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 80% | 50,444 psi | 78% | 2776 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,837 psi | 51% | 2480 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 32,677 psi | 50% | 2444 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,005 psi | 68% | 2631 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,039 psi | 79% | 2441 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,586 psi | 72% | 2723 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,116 psi | 59% | 2621 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,295 psi | 68% | 2644 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 45,818 psi | 70% | 2703 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,348 psi | 59% | 2579 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,129 psi | 56% | 2448 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,370 psi | 45% | 2306 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 39,421 psi | 61% | 2602 fps | 97.6% |
| Somchem S335 | <<locked>> | 80% | 35,346 psi | 54% | 2448 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 39,465 psi | 61% | 2592 fps | 95.8% |
| Somchem S355 | <<locked>> | 88% | 35,230 psi | 54% | 2523 fps | 95.1% |
| Somchem S365 | <<locked>> | 96% | 32,358 psi | 50% | 2536 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 50,879 psi | 78% | 2635 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,147 psi | 63% | 2536 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,187 psi | 56% | 2457 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,125 psi | 48% | 2418 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 32,271 psi | 50% | 2421 fps | 98% |
| Vihtavuori N150 | <<locked>> | 86% | 31,314 psi | 48% | 2411 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 36,782 psi | 57% | 2520 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 80% | 30,864 psi | 47% | 2398 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 37,420 psi | 58% | 2546 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 35,505 psi | 55% | 2552 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,853 psi | 54% | 2520 fps | 95.1% |
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 90 powders for .338 Weatherby RPM loaded with the .338 | 185gr | Fox Classic Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,713 fps to 3,041 fps. Accurate 4064 gives the best case fill at 100 %, and 90 of the 90 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 185.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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, Hodgdon CFE223 rank at the top here: for .338 Weatherby RPM with the .338 | 185gr | Fox Classic Hunter 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.