Load Specifications
Load data in caliber .338 Rem. Ultra Mag. with .338 | 200gr | Reichenberg HDB Universal bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
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.
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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 2495 | <<locked>> | 82% | 55,143 psi | 86% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,694 psi | 86% | 2795 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2877 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 55,767 psi | 87% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,363 psi | 90% | 2933 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,246 psi | 88% | 2861 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,897 psi | 86% | 2923 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,304 psi | 88% | 2972 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,028 psi | 88% | 2982 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,043 psi | 89% | 2881 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,305 psi | 90% | 2904 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,520 psi | 85% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,956 psi | 88% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,302 psi | 85% | 2910 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2966 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,344 psi | 82% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,208 psi | 71% | 2822 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,768 psi | 89% | 3038 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,720 psi | 79% | 2887 fps | 97.6% |
| Bofors RP3 | <<locked>> | 84% | 54,215 psi | 85% | 2844 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2966 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 57,464 psi | 90% | 2887 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 54,781 psi | 86% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,854 psi | 88% | 2930 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,463 psi | 87% | 2890 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 98% | 56,608 psi | 89% | 2917 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,288 psi | 87% | 2897 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,752 psi | 86% | 2858 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,159 psi | 88% | 2897 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,222 psi | 69% | 2851 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 90% | 56,507 psi | 89% | 2966 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,608 psi | 89% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,550 psi | 87% | 2841 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,752 psi | 86% | 2825 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 55,158 psi | 86% | 2864 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,608 psi | 87% | 2861 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 54,157 psi | 85% | 2871 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,187 psi | 86% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,317 psi | 85% | 2851 fps | 96.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,621 psi | 84% | 2943 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 57,058 psi | 89% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,753 psi | 87% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,593 psi | 87% | 2854 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,058 psi | 89% | 2897 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,788 psi | 72% | 2730 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 56,898 psi | 89% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,608 psi | 89% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,101 psi | 88% | 2917 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 55,056 psi | 86% | 2992 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 56,014 psi | 88% | 2917 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,998 psi | 85% | 2861 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2956 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 55,027 psi | 86% | 2917 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,356 psi | 76% | 2828 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,752 psi | 86% | 2848 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,376 psi | 87% | 2953 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,464 psi | 90% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,086 psi | 88% | 2982 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,454 psi | 70% | 2848 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 57,595 psi | 90% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,462 psi | 85% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,434 psi | 88% | 2890 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 98% | 57,101 psi | 89% | 2949 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 57,464 psi | 90% | 2887 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,593 psi | 87% | 2854 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,753 psi | 87% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,058 psi | 89% | 2897 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,318 psi | 88% | 2900 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,029 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,361 psi | 87% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,361 psi | 87% | 2808 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,623 psi | 89% | 2946 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 57,392 psi | 90% | 2769 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,360 psi | 85% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,781 psi | 86% | 2828 fps | 96.4% |
| Somchem S365 | <<locked>> | 94% | 55,622 psi | 87% | 2917 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,969 psi | 85% | 2867 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 54,607 psi | 86% | 2759 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,839 psi | 86% | 2772 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,898 psi | 88% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,520 psi | 85% | 2861 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2841 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 56,840 psi | 89% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,232 psi | 90% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,621 psi | 86% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,317 psi | 87% | 2982 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,404 psi | 85% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,043 psi | 88% | 2933 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2953 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,276 psi | 90% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,389 psi | 85% | 2864 fps | 98.2% |
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 2495 | <<locked>> | 80% | 51,590 psi | 81% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,730 psi | 70% | 2631 fps | 96.9% |
| Accurate 3100 | <<locked>> | 86% | 33,692 psi | 53% | 2484 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 48,921 psi | 77% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,376 psi | 59% | 2592 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 46,601 psi | 73% | 2710 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 41,858 psi | 66% | 2687 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 49,023 psi | 77% | 2848 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,953 psi | 81% | 2923 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,992 psi | 74% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,241 psi | 79% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,579 psi | 57% | 2605 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,771 psi | 65% | 2730 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,510 psi | 65% | 2680 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,887 psi | 66% | 2730 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,556 psi | 42% | 2349 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,445 psi | 51% | 2526 fps | 95.3% |
| Alliant Reloder-26 | 80.8 gr | 82% | 30,676 psi | 48% | 2520 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 41,321 psi | 65% | 2713 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 47,282 psi | 74% | 2740 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,887 psi | 66% | 2730 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 41,582 psi | 65% | 2615 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 47,747 psi | 75% | 2749 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,581 psi | 62% | 2641 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 42,554 psi | 67% | 2664 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 94% | 49,037 psi | 77% | 2795 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,503 psi | 81% | 2838 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,011 psi | 53% | 2497 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,431 psi | 82% | 2844 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,394 psi | 65% | 2785 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 38,754 psi | 61% | 2648 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 42% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,113 psi | 83% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,994 psi | 77% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,227 psi | 80% | 2769 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 39,755 psi | 62% | 2592 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,018 psi | 67% | 2644 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 35,940 psi | 56% | 2543 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,547 psi | 81% | 2825 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,805 psi | 75% | 2740 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 46,833 psi | 73% | 2822 fps | 95.3% |
| Lovex S060 | <<locked>> | 80% | 53,563 psi | 84% | 2779 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,037 psi | 77% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,379 psi | 63% | 2592 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 38,624 psi | 61% | 2572 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 34,925 psi | 55% | 2513 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 53,359 psi | 84% | 2795 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,588 psi | 78% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,351 psi | 66% | 2677 fps | 95.1% |
| Norma MRP | 84.2 gr | 88% | 38,392 psi | 60% | 2680 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,304 psi | 58% | 2589 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,270 psi | 79% | 2805 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,688 psi | 73% | 2828 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 36,260 psi | 57% | 2572 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 94% | 38,522 psi | 60% | 2635 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 43% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,906 psi | 75% | 2736 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,425 psi | 70% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,347 psi | 59% | 2605 fps | 97.9% |
| ReloadSwiss RS 70 | 78.1 gr | 80% | 36,361 psi | 57% | 2615 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,435 psi | 60% | 2707 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 50,821 psi | 80% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,411 psi | 70% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,398 psi | 73% | 2726 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 40,509 psi | 63% | 2661 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,582 psi | 65% | 2615 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,379 psi | 63% | 2592 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,037 psi | 77% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,624 psi | 61% | 2572 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,876 psi | 72% | 2740 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,374 psi | 84% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,774 psi | 72% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,610 psi | 62% | 2536 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,149 psi | 68% | 2717 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,925 psi | 85% | 2726 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,730 psi | 70% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,082 psi | 80% | 2769 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 33,750 psi | 53% | 2543 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,522 psi | 60% | 2589 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 51,068 psi | 80% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,430 psi | 81% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,772 psi | 67% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,740 psi | 61% | 2589 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 40,654 psi | 64% | 2621 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 49,763 psi | 78% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,218 psi | 60% | 2589 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,312 psi | 46% | 2425 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 94% | 48,008 psi | 75% | 2854 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,072 psi | 60% | 2559 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,726 psi | 62% | 2641 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,034 psi | 39% | 2369 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,534 psi | 84% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,685 psi | 68% | 2687 fps | 95.8% |
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 93 powders for .338 Rem. Ultra Mag. loaded with the .338 | 200gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,038 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .338 Rem. Ultra Mag. with the .338 | 200gr | Reichenberg HDB Universal 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.