Load Specifications
Load data in caliber .338 Rem. Ultra Mag. with .338 | 200gr | Alaska Bullet Works Kodiak SP SPBC bullet and 87 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 Vihtavuori N560.
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% | 57,305 psi | 90% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,795 psi | 86% | 2805 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2904 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,244 psi | 85% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,579 psi | 87% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,115 psi | 88% | 2989 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 57,711 psi | 90% | 2877 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,391 psi | 88% | 2943 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 54,128 psi | 85% | 2933 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,450 psi | 90% | 2999 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,172 psi | 86% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,274 psi | 87% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,086 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,667 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,811 psi | 87% | 2930 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2989 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,114 psi | 85% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2851 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,520 psi | 85% | 3002 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,388 psi | 82% | 2913 fps | 98% |
| Bofors RP3 | <<locked>> | 84% | 56,115 psi | 88% | 2864 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2989 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 55,288 psi | 87% | 2851 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 56,347 psi | 88% | 2884 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,508 psi | 90% | 2953 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 56,927 psi | 89% | 2910 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,375 psi | 85% | 2881 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,840 psi | 89% | 2917 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,463 psi | 88% | 2877 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,919 psi | 72% | 2884 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 88% | 54,215 psi | 85% | 2927 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 57% | 1824 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,116 psi | 90% | 2861 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,956 psi | 88% | 2841 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 56,637 psi | 89% | 2884 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,014 psi | 89% | 2881 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 55,956 psi | 88% | 2894 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,695 psi | 89% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,680 psi | 87% | 2871 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,390 psi | 87% | 2966 fps | 97.5% |
| Lovex S062 | <<locked>> | 84% | 57,276 psi | 90% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,246 psi | 90% | 2874 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,216 psi | 87% | 2864 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 2756 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 54,578 psi | 86% | 2858 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,667 psi | 90% | 2936 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 57,043 psi | 89% | 3015 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 57,725 psi | 90% | 2936 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,390 psi | 87% | 2877 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2982 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 56,637 psi | 89% | 2940 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,227 psi | 79% | 2858 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,289 psi | 88% | 2867 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,101 psi | 89% | 2969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,390 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,838 psi | 84% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,195 psi | 72% | 2881 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 55,811 psi | 87% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,188 psi | 88% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,360 psi | 85% | 2858 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,071 psi | 86% | 2917 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 55,288 psi | 87% | 2851 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,246 psi | 90% | 2874 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 57,276 psi | 90% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,216 psi | 87% | 2864 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,244 psi | 85% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,855 psi | 89% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,985 psi | 89% | 2828 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,607 psi | 86% | 2910 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 56,144 psi | 88% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,246 psi | 88% | 2848 fps | 96.8% |
| Somchem S365 | <<locked>> | 94% | 57,479 psi | 90% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,883 psi | 88% | 2894 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 56,217 psi | 88% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,463 psi | 88% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,348 psi | 90% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,188 psi | 88% | 2881 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2864 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 54,607 psi | 86% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,347 psi | 87% | 2884 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,637 psi | 89% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,130 psi | 90% | 3005 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,927 psi | 88% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,696 psi | 90% | 2953 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,908 psi | 78% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,999 psi | 88% | 2884 fps | 98.4% |
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% | 53,737 psi | 84% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,329 psi | 80% | 2753 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 33,127 psi | 52% | 2464 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 50,923 psi | 80% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,131 psi | 61% | 2621 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 52,156 psi | 82% | 2923 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 47,834 psi | 75% | 2726 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,279 psi | 68% | 2713 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 47,282 psi | 74% | 2812 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,577 psi | 84% | 2943 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,457 psi | 76% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,706 psi | 81% | 2815 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,884 psi | 59% | 2631 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,366 psi | 68% | 2756 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,975 psi | 67% | 2703 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,741 psi | 64% | 2700 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,876 psi | 44% | 2385 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,807 psi | 50% | 2503 fps | 95% |
| Alliant Reloder-26 | 79.4 gr | 80% | 29,994 psi | 47% | 2493 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 42,902 psi | 67% | 2740 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,979 psi | 77% | 2759 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,741 psi | 64% | 2700 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 42,960 psi | 67% | 2638 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,255 psi | 77% | 2772 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,133 psi | 64% | 2667 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 43,845 psi | 69% | 2687 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 50,734 psi | 80% | 2822 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,617 psi | 78% | 2805 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,433 psi | 56% | 2523 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,248 psi | 63% | 2756 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,234 psi | 63% | 2674 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,328 psi | 79% | 2759 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,649 psi | 83% | 2789 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 38,493 psi | 60% | 2559 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,382 psi | 70% | 2667 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 37,623 psi | 59% | 2575 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 53,069 psi | 83% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,211 psi | 77% | 2762 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 48,327 psi | 76% | 2844 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,546 psi | 79% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,829 psi | 66% | 2615 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 40,074 psi | 63% | 2595 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,505 psi | 54% | 2497 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,068 psi | 80% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,801 psi | 69% | 2703 fps | 95.6% |
| Norma MRP | 82.8 gr | 86% | 37,202 psi | 58% | 2648 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 38,769 psi | 61% | 2615 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 51,866 psi | 81% | 2825 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,092 psi | 71% | 2792 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 37,768 psi | 59% | 2602 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 40,234 psi | 63% | 2667 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,240 psi | 77% | 2756 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,064 psi | 72% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,059 psi | 61% | 2638 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,811 psi | 59% | 2644 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,318 psi | 58% | 2674 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 52,402 psi | 82% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,108 psi | 72% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,819 psi | 75% | 2749 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,119 psi | 66% | 2690 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,960 psi | 67% | 2638 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,829 psi | 66% | 2615 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 50,546 psi | 79% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,074 psi | 63% | 2595 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,471 psi | 74% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,079 psi | 74% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,017 psi | 64% | 2562 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,742 psi | 65% | 2684 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,282 psi | 73% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,255 psi | 77% | 2736 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,259 psi | 55% | 2572 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,016 psi | 63% | 2615 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,678 psi | 83% | 2730 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,866 psi | 83% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,237 psi | 69% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,176 psi | 63% | 2612 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 39,523 psi | 62% | 2595 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 51,169 psi | 80% | 2736 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,668 psi | 62% | 2612 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,951 psi | 49% | 2461 fps | 96.7% |
| Vihtavuori N560 | 90.5 gr | 94% | 49,617 psi | 78% | 2881 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,494 psi | 62% | 2582 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,278 psi | 65% | 2671 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,772 psi | 39% | 2352 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,308 psi | 66% | 2657 fps | 95.4% |
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 87 powders for .338 Rem. Ultra Mag. loaded with the .338 | 200gr | Alaska Bullet Works Kodiak SP SPBC. Norma MRP delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,015 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 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 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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, Vihtavuori N560 rank at the top here: for .338 Rem. Ultra Mag. with the .338 | 200gr | Alaska Bullet Works Kodiak SP SPBC 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.