Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 250gr | Barnes Banded Solid bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,911 psi | 86% | 2654 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,231 psi | 88% | 2680 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,261 psi | 90% | 2799 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 82% | 57,290 psi | 90% | 2638 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,029 psi | 89% | 2736 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,679 psi | 86% | 2740 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2648 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,743 psi | 69% | 2615 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,232 psi | 90% | 2733 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,578 psi | 86% | 2694 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,434 psi | 88% | 2723 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,708 psi | 86% | 2740 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,912 psi | 88% | 2707 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 2769 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,420 psi | 88% | 2799 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,521 psi | 89% | 2707 fps | 96.9% |
| Bofors RP15 | <<locked>> | 98% | 57,450 psi | 90% | 2779 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,227 psi | 80% | 2717 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 54,708 psi | 86% | 2740 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,100 psi | 86% | 2631 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,143 psi | 85% | 2733 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 54,259 psi | 85% | 2680 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 57,058 psi | 89% | 2694 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,636 psi | 86% | 2684 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,276 psi | 90% | 2723 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,392 psi | 90% | 2657 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,563 psi | 86% | 2717 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1660 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,550 psi | 89% | 2667 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,521 psi | 89% | 2654 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 56,666 psi | 89% | 2674 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,796 psi | 87% | 2671 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 56,333 psi | 88% | 2776 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,276 psi | 62% | 2520 fps | 96% |
| Lovex S065 | <<locked>> | 86% | 57,101 psi | 89% | 2648 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,361 psi | 87% | 2648 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,941 psi | 88% | 2667 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,682 psi | 90% | 2723 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 39,320 psi | 62% | 2546 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 54,491 psi | 85% | 2759 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,752 psi | 86% | 2667 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,188 psi | 90% | 2799 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 88% | 57,159 psi | 90% | 2723 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,245 psi | 87% | 2733 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 1699 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,275 psi | 88% | 2703 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,520 psi | 85% | 2730 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,592 psi | 86% | 2831 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2723 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 56,565 psi | 89% | 2628 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,578 psi | 86% | 2654 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,014 psi | 88% | 2717 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 55,100 psi | 86% | 2631 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,101 psi | 89% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,361 psi | 87% | 2648 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,231 psi | 88% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,362 psi | 88% | 2608 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,564 psi | 87% | 2713 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 56,173 psi | 88% | 2625 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,144 psi | 88% | 2651 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 55,027 psi | 86% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,594 psi | 89% | 2690 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 57,363 psi | 90% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,420 psi | 88% | 2654 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,014 psi | 88% | 2671 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 55,709 psi | 87% | 2664 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,679 psi | 86% | 2687 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,375 psi | 85% | 2756 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 54,172 psi | 85% | 2736 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2730 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,840 psi | 88% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,447 psi | 85% | 2684 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,653 psi | 90% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,362 psi | 88% | 2687 fps | 99.7% |
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 3100 | <<locked>> | 80% | 34,403 psi | 54% | 2300 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 46,093 psi | 72% | 2530 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,207 psi | 68% | 2566 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 53,853 psi | 84% | 2592 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,406 psi | 60% | 2415 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 39,175 psi | 61% | 2461 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 37,608 psi | 59% | 2425 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 31,720 psi | 50% | 2336 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,947 psi | 69% | 2533 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,763 psi | 80% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,435 psi | 60% | 2411 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,113 psi | 53% | 2356 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,982 psi | 52% | 2326 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,761 psi | 45% | 2241 fps | 96.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,868 psi | 56% | 2454 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,908 psi | 78% | 2598 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 34,098 psi | 53% | 2352 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 36,434 psi | 57% | 2441 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 34,113 psi | 53% | 2356 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,646 psi | 76% | 2533 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,027 psi | 56% | 2392 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,645 psi | 75% | 2579 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,038 psi | 78% | 2589 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 41,814 psi | 66% | 2467 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,075 psi | 64% | 2454 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,640 psi | 65% | 2428 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,084 psi | 53% | 2425 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 47,065 psi | 74% | 2598 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 44% | 1483 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,135 psi | 69% | 2470 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,995 psi | 78% | 2556 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 43,801 psi | 69% | 2480 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,828 psi | 64% | 2415 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 40,234 psi | 63% | 2497 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 36,782 psi | 58% | 2464 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,645 psi | 75% | 2510 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,963 psi | 72% | 2503 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 29,646 psi | 46% | 2188 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 44,019 psi | 69% | 2507 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 32,300 psi | 51% | 2379 fps | 95.6% |
| Norma MRP | 76.4 gr | 80% | 35,679 psi | 56% | 2418 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 45,150 psi | 71% | 2520 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,173 psi | 58% | 2444 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 43,801 psi | 69% | 2513 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,127 psi | 52% | 2333 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1519 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,948 psi | 72% | 2552 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,990 psi | 69% | 2566 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 30,937 psi | 48% | 2343 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,685 psi | 67% | 2602 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 53,069 psi | 83% | 2582 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,697 psi | 62% | 2395 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 37,695 psi | 59% | 2398 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 48,646 psi | 76% | 2533 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,645 psi | 75% | 2510 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,963 psi | 72% | 2503 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,982 psi | 83% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,514 psi | 73% | 2461 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,362 psi | 59% | 2395 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 52,794 psi | 83% | 2579 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,306 psi | 63% | 2385 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,163 psi | 66% | 2480 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,189 psi | 60% | 2382 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 50,546 psi | 79% | 2507 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,586 psi | 73% | 2513 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,185 psi | 52% | 2267 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 45,774 psi | 72% | 2513 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,941 psi | 58% | 2395 fps | 99.8% |
| Vihtavuori N560 | 80.3 gr | 84% | 41,336 psi | 65% | 2526 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 38,638 psi | 61% | 2461 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 96% | 44,063 psi | 69% | 2612 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,440 psi | 71% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,645 psi | 75% | 2579 fps | 99.6% |
| Winchester StaBALL HD | 75.6 gr | 80% | 29,225 psi | 46% | 2343 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,867 psi | 55% | 2310 fps | 95.3% |
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 79 powders for .338 Norma Mag. loaded with the .338 | 250gr | Barnes Banded Solid. Winchester StaBALL HD delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,841 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .338 Norma Mag. with the .338 | 250gr | Barnes Banded Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.