Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 245gr | Lehigh Defense Match Solid bullet and 91 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 Alliant Reloder-26.
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 2700 | <<locked>> | 86% | 56,898 psi | 89% | 2615 fps | 99.7% |
| Accurate 3100 | <<locked>> | 98% | 54,201 psi | 85% | 2654 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 54,795 psi | 86% | 2579 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,130 psi | 88% | 2694 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2805 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 55,027 psi | 86% | 2615 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,435 psi | 90% | 2749 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 98% | 54,940 psi | 86% | 2749 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 2484 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,435 psi | 90% | 2743 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,898 psi | 88% | 2635 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,072 psi | 88% | 2657 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,246 psi | 90% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,723 psi | 86% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,652 psi | 89% | 2736 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,244 psi | 85% | 2743 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 2664 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,317 psi | 87% | 2805 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2710 fps | 96% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,982 psi | 83% | 2723 fps | 99% |
| Bofors RP3 | <<locked>> | 84% | 56,884 psi | 89% | 2651 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,265 psi | 68% | 2592 fps | 96.7% |
| Bofors RP5 | <<locked>> | 98% | 54,244 psi | 85% | 2743 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 56,086 psi | 88% | 2648 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,978 psi | 74% | 2612 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 84% | 57,058 psi | 89% | 2671 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,737 psi | 86% | 2697 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 54,404 psi | 85% | 2657 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 55,042 psi | 86% | 2694 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,740 psi | 90% | 2730 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,435 psi | 90% | 2671 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2710 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 88% | 54,955 psi | 86% | 2733 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 57% | 1640 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,520 psi | 85% | 2598 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,927 psi | 89% | 2638 fps | 99.9% |
| IMR 4350 | <<locked>> | 92% | 57,377 psi | 90% | 2684 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,259 psi | 85% | 2621 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 56,623 psi | 89% | 2684 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,551 psi | 90% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,550 psi | 89% | 2680 fps | 98.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,101 psi | 88% | 2776 fps | 98.7% |
| Lovex S062 | <<locked>> | 82% | 54,578 psi | 86% | 2589 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,534 psi | 85% | 2621 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,782 psi | 87% | 2661 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,124 psi | 75% | 2569 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 55,376 psi | 87% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,549 psi | 85% | 2684 fps | 99% |
| Norma MRP | <<locked>> | 96% | 53,795 psi | 84% | 2762 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 54,882 psi | 86% | 2680 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,362 psi | 88% | 2671 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,869 psi | 89% | 2799 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 57,551 psi | 90% | 2740 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,618 psi | 79% | 2674 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,289 psi | 58% | 1677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,913 psi | 89% | 2657 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,331 psi | 85% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,333 psi | 88% | 2720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,694 psi | 86% | 2746 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,528 psi | 73% | 2707 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 56,405 psi | 88% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,985 psi | 89% | 2648 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,216 psi | 87% | 2667 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 96% | 55,999 psi | 88% | 2723 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 88% | 56,086 psi | 88% | 2648 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,534 psi | 85% | 2621 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,578 psi | 86% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,782 psi | 87% | 2661 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,056 psi | 86% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,566 psi | 90% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,508 psi | 90% | 2625 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,535 psi | 87% | 2720 fps | 99.4% |
| Somchem S355 | <<locked>> | 86% | 56,768 psi | 89% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,898 psi | 89% | 2661 fps | 98% |
| Somchem S365 | <<locked>> | 92% | 54,607 psi | 86% | 2680 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,507 psi | 89% | 2697 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 82% | 57,203 psi | 90% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,363 psi | 90% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,621 psi | 86% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,898 psi | 89% | 2671 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,941 psi | 88% | 2677 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 82% | 55,332 psi | 87% | 2569 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,028 psi | 88% | 2677 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,363 psi | 90% | 2740 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,983 psi | 85% | 2756 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,298 psi | 77% | 2671 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,623 psi | 89% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,955 psi | 86% | 2700 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2789 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,797 psi | 89% | 2697 fps | 99.3% |
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 2700 | <<locked>> | 80% | 46,775 psi | 73% | 2464 fps | 98.6% |
| Accurate 3100 | <<locked>> | 80% | 28,964 psi | 45% | 2188 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 51,532 psi | 81% | 2536 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,624 psi | 62% | 2434 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 96% | 49,821 psi | 78% | 2687 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 48,704 psi | 76% | 2523 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,435 psi | 60% | 2425 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 41,887 psi | 66% | 2520 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 32,909 psi | 52% | 2369 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,653 psi | 61% | 2425 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,240 psi | 77% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,562 psi | 82% | 2608 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,667 psi | 61% | 2448 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,092 psi | 69% | 2559 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,261 psi | 60% | 2421 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,042 psi | 56% | 2415 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,224 psi | 44% | 2224 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,108 psi | 44% | 2234 fps | 95% |
| Alliant Reloder-26 | 72.4 gr | 80% | 30,226 psi | 47% | 2333 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 54,056 psi | 85% | 2657 fps | 95.2% |
| Bofors RP15 | <<locked>> | 90% | 38,058 psi | 60% | 2457 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 49,763 psi | 78% | 2556 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,408 psi | 63% | 2539 fps | 95.8% |
| Bofors RP5 | <<locked>> | 86% | 36,042 psi | 56% | 2415 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 43,511 psi | 68% | 2448 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 96% | 40,959 psi | 64% | 2497 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 50,009 psi | 78% | 2572 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,785 psi | 65% | 2484 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 44,744 psi | 70% | 2503 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 44,875 psi | 70% | 2530 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,976 psi | 69% | 2513 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,085 psi | 57% | 2343 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,592 psi | 56% | 2470 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,640 psi | 64% | 2497 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 43% | 1463 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,256 psi | 80% | 2552 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,417 psi | 84% | 2589 fps | 99.7% |
| IMR 4350 | <<locked>> | 80% | 39,189 psi | 61% | 2385 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,976 psi | 70% | 2474 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 38,116 psi | 60% | 2392 fps | 99.4% |
| IMR 4895 | <<locked>> | 80% | 53,925 psi | 85% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,888 psi | 69% | 2474 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 42,830 psi | 67% | 2552 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 51,329 psi | 80% | 2543 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,424 psi | 66% | 2428 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 40,596 psi | 64% | 2411 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 30,313 psi | 48% | 2224 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,895 psi | 81% | 2595 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,653 psi | 61% | 2408 fps | 95.6% |
| Norma MRP | 72 gr | 82% | 32,692 psi | 51% | 2362 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 39,479 psi | 62% | 2431 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 80% | 52,605 psi | 82% | 2618 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 39,566 psi | 62% | 2500 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,276 psi | 60% | 2421 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 34,911 psi | 55% | 2382 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 44% | 1496 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,893 psi | 78% | 2556 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,891 psi | 73% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,537 psi | 62% | 2454 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,232 psi | 60% | 2467 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,460 psi | 51% | 2388 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 53,026 psi | 83% | 2552 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,775 psi | 73% | 2507 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,714 psi | 67% | 2461 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 37,391 psi | 59% | 2405 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 43,511 psi | 68% | 2448 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,424 psi | 66% | 2428 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 51,329 psi | 80% | 2543 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,596 psi | 64% | 2411 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,138 psi | 75% | 2559 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,921 psi | 75% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,452 psi | 65% | 2379 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,057 psi | 58% | 2398 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,050 psi | 74% | 2503 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,453 psi | 68% | 2448 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,071 psi | 57% | 2392 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,127 psi | 52% | 2283 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 53,708 psi | 84% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,780 psi | 84% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,933 psi | 70% | 2438 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,872 psi | 64% | 2428 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 34,969 psi | 55% | 2320 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 51,953 psi | 81% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,277 psi | 63% | 2431 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,314 psi | 49% | 2293 fps | 98.3% |
| Vihtavuori N560 | 79 gr | 90% | 43,758 psi | 69% | 2582 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 43,018 psi | 67% | 2559 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,987 psi | 63% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,959 psi | 66% | 2487 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,729 psi | 39% | 2208 fps | 97.8% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,115 psi | 58% | 2372 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 91 powders for .338 Norma Mag. loaded with the .338 | 245gr | Lehigh Defense Match Solid. Accurate MAGPRO delivers the highest muzzle velocity at 2,805 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,805 fps. Accurate MAGPRO gives the best case fill at 100 %, and 91 of the 91 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 245.0 gr projectile in 0.338" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate MAGPRO, ADI AR 2225, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .338 Norma Mag. with the .338 | 245gr | Lehigh Defense Match Solid 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.