Load Specifications
Load data in caliber .338 Rem. Ultra Mag. with .338 | 220gr | 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 Norma MRP, Vihtavuori N560 and Accurate MAGPRO.
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 2495 | <<locked>> | 82% | 57,450 psi | 90% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,303 psi | 87% | 2700 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 54,288 psi | 85% | 2746 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,476 psi | 85% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,985 psi | 88% | 2789 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,782 psi | 87% | 2890 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 98% | 56,942 psi | 89% | 2890 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 54,795 psi | 86% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,261 psi | 90% | 2841 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 98% | 54,897 psi | 86% | 2838 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2559 fps | 96.8% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,435 psi | 90% | 2838 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,435 psi | 90% | 2838 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,753 psi | 87% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,782 psi | 87% | 2759 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,116 psi | 90% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,549 psi | 85% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,652 psi | 89% | 2828 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,230 psi | 85% | 2831 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2753 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,419 psi | 87% | 2897 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 2815 fps | 98.8% |
| Bofors RP3 | <<locked>> | 84% | 56,565 psi | 89% | 2753 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,381 psi | 68% | 2677 fps | 96.2% |
| Bofors RP5 | <<locked>> | 98% | 54,230 psi | 85% | 2831 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 55,854 psi | 88% | 2746 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2697 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 84% | 56,869 psi | 89% | 2772 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,563 psi | 86% | 2792 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 57,725 psi | 90% | 2805 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 55,100 psi | 86% | 2782 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,711 psi | 90% | 2822 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,392 psi | 90% | 2769 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,412 psi | 73% | 2795 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 88% | 55,042 psi | 86% | 2828 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1732 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,711 psi | 90% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,565 psi | 89% | 2736 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 57,290 psi | 90% | 2779 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,551 psi | 90% | 2769 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 56,550 psi | 89% | 2782 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,261 psi | 90% | 2785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,376 psi | 88% | 2772 fps | 97.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2871 fps | 98.4% |
| Lovex S062 | <<locked>> | 82% | 54,302 psi | 85% | 2690 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,696 psi | 90% | 2766 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,738 psi | 87% | 2759 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,037 psi | 75% | 2654 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 55,085 psi | 86% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,607 psi | 86% | 2779 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 53,896 psi | 84% | 2854 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 54,824 psi | 86% | 2779 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,202 psi | 88% | 2769 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2890 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 92% | 57,406 psi | 90% | 2831 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,937 psi | 80% | 2762 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 58% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,782 psi | 89% | 2759 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,099 psi | 85% | 2805 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,231 psi | 88% | 2815 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,708 psi | 86% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2789 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 82% | 56,173 psi | 88% | 2700 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,623 psi | 89% | 2749 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,042 psi | 86% | 2759 fps | 98% |
| Rottweil R 905 | <<locked>> | 96% | 55,811 psi | 87% | 2815 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 55,854 psi | 88% | 2746 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,696 psi | 90% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,302 psi | 85% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,738 psi | 87% | 2759 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,781 psi | 86% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,377 psi | 90% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,348 psi | 90% | 2720 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,347 psi | 87% | 2812 fps | 99.1% |
| Somchem S355 | <<locked>> | 86% | 56,536 psi | 89% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,971 psi | 89% | 2749 fps | 97.7% |
| Somchem S365 | <<locked>> | 92% | 54,549 psi | 85% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,434 psi | 88% | 2789 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 82% | 56,652 psi | 89% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,942 psi | 89% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,288 psi | 85% | 2671 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,768 psi | 89% | 2769 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2769 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 55,172 psi | 86% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,970 psi | 88% | 2776 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,406 psi | 90% | 2835 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,056 psi | 85% | 2848 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2759 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,797 psi | 89% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,752 psi | 86% | 2795 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,285 psi | 80% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,884 psi | 89% | 2785 fps | 99.1% |
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% | 53,867 psi | 84% | 2625 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,648 psi | 81% | 2648 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 30,864 psi | 48% | 2316 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,126 psi | 80% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,320 psi | 62% | 2520 fps | 99.2% |
| Accurate High Country | <<locked>> | 88% | 41,872 psi | 66% | 2648 fps | 95.1% |
| Accurate MAGPRO | 89.1 gr | 94% | 49,197 psi | 77% | 2769 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 48,254 psi | 76% | 2621 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,959 psi | 64% | 2566 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 44,672 psi | 70% | 2661 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 35,230 psi | 55% | 2503 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,435 psi | 60% | 2510 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,435 psi | 60% | 2510 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,052 psi | 77% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,243 psi | 82% | 2707 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,348 psi | 60% | 2536 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,845 psi | 69% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,698 psi | 64% | 2556 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,377 psi | 60% | 2549 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,949 psi | 44% | 2297 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,907 psi | 47% | 2362 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,081 psi | 47% | 2405 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 40,553 psi | 64% | 2592 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 49,400 psi | 77% | 2651 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,437 psi | 63% | 2618 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 38,377 psi | 60% | 2549 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 43,163 psi | 68% | 2536 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 40,886 psi | 64% | 2575 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,777 psi | 78% | 2667 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,510 psi | 65% | 2572 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 44,396 psi | 70% | 2592 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 47,979 psi | 75% | 2671 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,891 psi | 73% | 2651 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,810 psi | 56% | 2428 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,043 psi | 60% | 2612 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 40,625 psi | 64% | 2582 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,166 psi | 43% | 1552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,763 psi | 80% | 2651 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,040 psi | 83% | 2684 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 38,812 psi | 61% | 2467 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,788 psi | 70% | 2569 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 37,884 psi | 59% | 2477 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 53,606 psi | 84% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,572 psi | 73% | 2612 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 42,699 psi | 67% | 2635 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 51,024 psi | 80% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,105 psi | 66% | 2516 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 40,408 psi | 63% | 2500 fps | 97.6% |
| Lovex S071 | <<locked>> | 88% | 32,256 psi | 51% | 2349 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 51,590 psi | 81% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,278 psi | 65% | 2549 fps | 95.8% |
| Norma MRP | 78.2 gr | 84% | 35,012 psi | 55% | 2500 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 39,233 psi | 61% | 2520 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 52,431 psi | 82% | 2717 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,424 psi | 66% | 2638 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 38,130 psi | 60% | 2510 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 37,666 psi | 59% | 2520 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 43% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,734 psi | 78% | 2654 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,630 psi | 73% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,291 psi | 62% | 2539 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,130 psi | 60% | 2552 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,925 psi | 55% | 2526 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 52,779 psi | 83% | 2654 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,514 psi | 73% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,453 psi | 67% | 2546 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 39,755 psi | 62% | 2539 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 43,163 psi | 68% | 2536 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,105 psi | 66% | 2516 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 51,024 psi | 80% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,408 psi | 63% | 2500 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,993 psi | 75% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,630 psi | 75% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,220 psi | 65% | 2464 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,392 psi | 62% | 2536 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 46,702 psi | 73% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,456 psi | 73% | 2589 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 35,621 psi | 56% | 2474 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,186 psi | 55% | 2415 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 53,345 psi | 84% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,534 psi | 84% | 2631 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,715 psi | 70% | 2533 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,582 psi | 64% | 2516 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 37,275 psi | 58% | 2451 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 51,706 psi | 81% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,030 psi | 63% | 2516 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 30,995 psi | 49% | 2369 fps | 97.6% |
| Vihtavuori N560 | 85.6 gr | 92% | 46,949 psi | 74% | 2730 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 42,989 psi | 67% | 2641 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,856 psi | 62% | 2487 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,669 psi | 65% | 2575 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,627 psi | 39% | 2274 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,842 psi | 62% | 2510 fps | 95.6% |
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 | 220gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,897 fps. ADI AR 2225 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 220.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for .338 Rem. Ultra Mag. with the .338 | 220gr | 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.