Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 225gr | Peregrine VLR-4 bullet and 89 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% | 2687 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,984 psi | 86% | 2717 fps | 99.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2818 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 54,302 psi | 85% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,666 psi | 87% | 2812 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,173 psi | 88% | 2910 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 54,462 psi | 85% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,898 psi | 89% | 2864 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 54,288 psi | 85% | 2854 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,202 psi | 58% | 2579 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,376 psi | 87% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,651 psi | 87% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,608 psi | 89% | 2864 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,259 psi | 85% | 2835 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,086 psi | 88% | 2848 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2907 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 2831 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 2772 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,563 psi | 86% | 2917 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2831 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 56,347 psi | 88% | 2769 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2907 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 55,651 psi | 87% | 2762 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,456 psi | 73% | 2713 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 56,666 psi | 89% | 2789 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,099 psi | 85% | 2808 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 57,276 psi | 90% | 2822 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 54,534 psi | 85% | 2802 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,087 psi | 89% | 2838 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,913 psi | 89% | 2789 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2812 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 54,418 psi | 85% | 2844 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 57% | 1729 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,377 psi | 90% | 2762 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,449 psi | 88% | 2753 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 56,855 psi | 89% | 2799 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,377 psi | 90% | 2792 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 56,072 psi | 88% | 2802 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,087 psi | 89% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,101 psi | 88% | 2792 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,709 psi | 87% | 2890 fps | 98.2% |
| Lovex S062 | <<locked>> | 84% | 57,580 psi | 90% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,305 psi | 90% | 2782 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,288 psi | 87% | 2776 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2674 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 54,955 psi | 86% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,114 psi | 85% | 2795 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 57,290 psi | 90% | 2933 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 54,375 psi | 85% | 2795 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,811 psi | 87% | 2785 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2910 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 92% | 56,840 psi | 89% | 2851 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,212 psi | 79% | 2782 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,405 psi | 88% | 2776 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,696 psi | 90% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,666 psi | 87% | 2835 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,114 psi | 85% | 2861 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,963 psi | 72% | 2805 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 82% | 55,869 psi | 88% | 2717 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,434 psi | 88% | 2766 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,795 psi | 86% | 2779 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 55,492 psi | 87% | 2838 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 55,651 psi | 87% | 2762 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,305 psi | 90% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,580 psi | 90% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,288 psi | 87% | 2776 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,563 psi | 86% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,232 psi | 90% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,145 psi | 90% | 2740 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,013 psi | 86% | 2831 fps | 99% |
| Somchem S355 | <<locked>> | 86% | 56,347 psi | 88% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,434 psi | 88% | 2772 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 54,012 psi | 85% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,840 psi | 88% | 2808 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 56,536 psi | 89% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,811 psi | 89% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,580 psi | 90% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,492 psi | 89% | 2789 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,448 psi | 87% | 2789 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 54,810 psi | 86% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,448 psi | 87% | 2795 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,739 psi | 89% | 2858 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,377 psi | 90% | 2927 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,921 psi | 77% | 2776 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,231 psi | 88% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,288 psi | 85% | 2812 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,372 psi | 79% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,246 psi | 88% | 2808 fps | 99% |
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% | 53,548 psi | 84% | 2638 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,532 psi | 81% | 2664 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 30,719 psi | 48% | 2329 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,836 psi | 80% | 2648 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,204 psi | 61% | 2536 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 48,573 psi | 76% | 2785 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,153 psi | 75% | 2635 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,654 psi | 64% | 2579 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 44,237 psi | 69% | 2677 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 34,824 psi | 55% | 2516 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,762 psi | 76% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,112 psi | 82% | 2723 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,101 psi | 60% | 2546 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,656 psi | 68% | 2667 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,379 psi | 63% | 2572 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,014 psi | 60% | 2562 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,775 psi | 44% | 2306 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,691 psi | 50% | 2431 fps | 96.1% |
| Alliant Reloder-26 | 76.5 gr | 80% | 29,805 psi | 47% | 2415 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 40,292 psi | 63% | 2608 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 49,240 psi | 77% | 2667 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 38,014 psi | 60% | 2562 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 43,091 psi | 68% | 2552 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 98% | 43,337 psi | 68% | 2651 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,458 psi | 78% | 2680 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,220 psi | 65% | 2585 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 44,280 psi | 69% | 2605 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 47,514 psi | 74% | 2687 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,456 psi | 73% | 2667 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,708 psi | 56% | 2441 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,652 psi | 59% | 2621 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,248 psi | 63% | 2598 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1545 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,662 psi | 79% | 2667 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,968 psi | 83% | 2700 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,725 psi | 61% | 2480 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,527 psi | 70% | 2579 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 37,608 psi | 59% | 2487 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 53,490 psi | 84% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,195 psi | 72% | 2628 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 45,281 psi | 71% | 2710 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,734 psi | 80% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,887 psi | 66% | 2530 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,132 psi | 63% | 2510 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 31,966 psi | 50% | 2359 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 51,474 psi | 81% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,959 psi | 64% | 2562 fps | 95.7% |
| Norma MRP | 78 gr | 84% | 34,693 psi | 54% | 2513 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,972 psi | 61% | 2530 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 52,069 psi | 82% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,018 psi | 66% | 2654 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 37,840 psi | 59% | 2520 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 37,231 psi | 58% | 2536 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,400 psi | 77% | 2667 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,456 psi | 73% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,117 psi | 61% | 2556 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,797 psi | 59% | 2566 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,490 psi | 54% | 2536 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 52,518 psi | 82% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,224 psi | 72% | 2615 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,063 psi | 71% | 2615 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 39,421 psi | 62% | 2552 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,091 psi | 68% | 2552 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,887 psi | 66% | 2530 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,734 psi | 80% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,132 psi | 63% | 2510 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,674 psi | 75% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,384 psi | 74% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,973 psi | 64% | 2477 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,059 psi | 61% | 2546 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,412 psi | 73% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,064 psi | 72% | 2602 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,505 psi | 56% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,056 psi | 55% | 2428 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 53,040 psi | 83% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,229 psi | 83% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,440 psi | 70% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,466 psi | 63% | 2530 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 36,970 psi | 58% | 2464 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,387 psi | 81% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,755 psi | 62% | 2530 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,879 psi | 48% | 2382 fps | 97.5% |
| Vihtavuori N560 | 85.4 gr | 92% | 46,456 psi | 73% | 2746 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 45,658 psi | 72% | 2720 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,523 psi | 62% | 2500 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,394 psi | 65% | 2585 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,453 psi | 38% | 2280 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,479 psi | 62% | 2523 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 95 powders for .338 Norma Mag. loaded with the .338 | 225gr | Peregrine VLR-4. Norma MRP delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,933 fps. Accurate 3100 gives the best case fill at 100 %, and 95 of the 95 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 1:11.5 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 | Peregrine VLR-4 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.