Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 225gr | Nosler Expansion Tip bullet and 91 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.
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% | 56,739 psi | 89% | 2674 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,737 psi | 86% | 2710 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 2808 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 57,479 psi | 90% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,172 psi | 86% | 2799 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,622 psi | 87% | 2897 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 86% | 57,653 psi | 90% | 2772 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,304 psi | 88% | 2851 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 53,954 psi | 85% | 2848 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,811 psi | 58% | 2562 fps | 96.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,580 psi | 90% | 2897 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,085 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,143 psi | 86% | 2766 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,115 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,580 psi | 90% | 2877 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,724 psi | 87% | 2838 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2900 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,838 psi | 84% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,456 psi | 73% | 2759 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,896 psi | 84% | 2904 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 2825 fps | 98.5% |
| Bofors RP3 | <<locked>> | 84% | 55,811 psi | 87% | 2759 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2900 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 55,201 psi | 87% | 2753 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,151 psi | 72% | 2703 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 84% | 56,202 psi | 88% | 2782 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,551 psi | 90% | 2858 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 57,072 psi | 89% | 2818 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 54,172 psi | 85% | 2792 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,710 psi | 89% | 2831 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,449 psi | 88% | 2779 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,624 psi | 90% | 2808 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,542 psi | 71% | 2802 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 88% | 53,983 psi | 85% | 2838 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 57% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,072 psi | 89% | 2756 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,985 psi | 88% | 2743 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 56,463 psi | 88% | 2789 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,942 psi | 89% | 2779 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 55,579 psi | 87% | 2792 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,594 psi | 89% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,535 psi | 87% | 2779 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,114 psi | 86% | 2877 fps | 98% |
| Lovex S062 | <<locked>> | 84% | 57,290 psi | 90% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,087 psi | 89% | 2776 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,882 psi | 86% | 2766 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,108 psi | 74% | 2664 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,433 psi | 85% | 2753 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,450 psi | 90% | 2844 fps | 99% |
| Norma MRP | <<locked>> | 98% | 56,637 psi | 89% | 2923 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 57,638 psi | 90% | 2838 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,317 psi | 87% | 2779 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2897 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 92% | 56,434 psi | 88% | 2844 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,690 psi | 78% | 2772 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,144 psi | 88% | 2769 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,159 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,216 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,566 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,527 psi | 71% | 2795 fps | 99% |
| Rottweil R 902 | <<locked>> | 82% | 55,521 psi | 87% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,898 psi | 88% | 2756 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,230 psi | 85% | 2766 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 54,839 psi | 86% | 2825 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 55,201 psi | 87% | 2753 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,087 psi | 89% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,290 psi | 90% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,882 psi | 86% | 2766 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,099 psi | 85% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,753 psi | 89% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,768 psi | 89% | 2733 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,375 psi | 85% | 2818 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 55,854 psi | 88% | 2753 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,898 psi | 88% | 2759 fps | 97.3% |
| Somchem S365 | <<locked>> | 94% | 57,392 psi | 90% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,434 psi | 87% | 2799 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 56,202 psi | 88% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,304 psi | 88% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,348 psi | 90% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,043 psi | 88% | 2782 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 2776 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 54,520 psi | 85% | 2680 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,027 psi | 86% | 2785 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,260 psi | 88% | 2848 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,826 psi | 89% | 2917 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2766 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,666 psi | 87% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,551 psi | 90% | 2858 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2890 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,666 psi | 87% | 2795 fps | 98.9% |
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% | 53,185 psi | 83% | 2631 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,097 psi | 80% | 2654 fps | 98.7% |
| Accurate 3100 | <<locked>> | 84% | 32,634 psi | 51% | 2375 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 50,459 psi | 79% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,885 psi | 61% | 2526 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 48,008 psi | 75% | 2772 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,877 psi | 75% | 2628 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,277 psi | 63% | 2566 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 43,903 psi | 69% | 2664 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,476 psi | 54% | 2503 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,693 psi | 84% | 2841 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,428 psi | 76% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,822 psi | 81% | 2720 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,840 psi | 59% | 2539 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,207 psi | 68% | 2657 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,016 psi | 63% | 2562 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,335 psi | 63% | 2608 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,543 psi | 43% | 2297 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,401 psi | 49% | 2418 fps | 95.8% |
| Alliant Reloder-26 | 75.9 gr | 80% | 29,457 psi | 46% | 2405 fps | 95.8% |
| Bofors RP15 | <<locked>> | 92% | 39,929 psi | 63% | 2598 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 48,747 psi | 76% | 2657 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,335 psi | 63% | 2608 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,670 psi | 67% | 2539 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 43,047 psi | 67% | 2644 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 49,168 psi | 77% | 2674 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,944 psi | 64% | 2575 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,845 psi | 69% | 2595 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 47,166 psi | 74% | 2677 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,093 psi | 72% | 2657 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,273 psi | 55% | 2431 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,940 psi | 85% | 2759 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,362 psi | 59% | 2612 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,885 psi | 63% | 2585 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 1542 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,357 psi | 79% | 2657 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,504 psi | 82% | 2690 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,464 psi | 60% | 2474 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,266 psi | 69% | 2572 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,318 psi | 58% | 2480 fps | 98.8% |
| IMR 4895 | <<locked>> | 80% | 53,200 psi | 83% | 2743 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,847 psi | 72% | 2618 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 44,947 psi | 70% | 2700 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 50,444 psi | 79% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,611 psi | 65% | 2520 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 39,885 psi | 63% | 2503 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,734 psi | 50% | 2352 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,140 psi | 80% | 2703 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,698 psi | 64% | 2556 fps | 95.5% |
| Norma MRP | 77.4 gr | 84% | 34,345 psi | 54% | 2500 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 38,667 psi | 61% | 2523 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,793 psi | 81% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,759 psi | 70% | 2707 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 37,594 psi | 59% | 2513 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,941 psi | 58% | 2526 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,153 psi | 77% | 2661 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,934 psi | 72% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,711 psi | 61% | 2543 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,579 psi | 59% | 2556 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,637 psi | 57% | 2592 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,170 psi | 82% | 2661 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,934 psi | 72% | 2608 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,657 psi | 70% | 2605 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 39,204 psi | 61% | 2546 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,670 psi | 67% | 2539 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,611 psi | 65% | 2520 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 50,444 psi | 79% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,885 psi | 63% | 2503 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,369 psi | 74% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,079 psi | 74% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,727 psi | 64% | 2467 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,841 psi | 61% | 2539 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 46,122 psi | 72% | 2605 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,716 psi | 72% | 2595 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,201 psi | 55% | 2480 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,130 psi | 58% | 2474 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 52,692 psi | 83% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,953 psi | 83% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,121 psi | 69% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,190 psi | 63% | 2523 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,593 psi | 57% | 2454 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,097 psi | 80% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,523 psi | 62% | 2520 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 30,618 psi | 48% | 2372 fps | 97.4% |
| Vihtavuori N560 | 84.8 gr | 92% | 46,093 psi | 72% | 2733 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 45,150 psi | 71% | 2707 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,160 psi | 61% | 2490 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,104 psi | 64% | 2579 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,265 psi | 38% | 2270 fps | 96.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,117 psi | 61% | 2513 fps | 95.2% |
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 97 powders for .338 Norma Mag. loaded with the .338 | 225gr | Nosler Expansion Tip. Norma MRP delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,923 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2217, ADI AR 2225 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 Norma Mag. with the .338 | 225gr | Nosler Expansion Tip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Norma 217, ReloadSwiss RS 80 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.