Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | CutEdge Maximus bullet and 74 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 Accurate MAGPRO.
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>> | 96% | 53,301 psi | 88% | 2776 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 54,984 psi | 90% | 2815 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 51,866 psi | 85% | 2858 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 53,447 psi | 88% | 2733 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,547 psi | 86% | 2812 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 53,679 psi | 88% | 2864 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,759 psi | 73% | 2697 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,508 psi | 65% | 2651 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,663 psi | 86% | 2808 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,462 psi | 89% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,431 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,519 psi | 88% | 2835 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 51,967 psi | 85% | 2802 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,243 psi | 87% | 2861 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,157 psi | 89% | 2838 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,067 psi | 82% | 2838 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,505 psi | 89% | 2923 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,272 psi | 86% | 2841 fps | 98.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,847 psi | 75% | 2762 fps | 97.1% |
| Bofors RP5 | <<locked>> | 96% | 53,243 psi | 87% | 2861 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 54,505 psi | 89% | 2766 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,342 psi | 81% | 2785 fps | 98% |
| Hodgdon H414 | <<locked>> | 86% | 53,403 psi | 88% | 2815 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 52,895 psi | 87% | 2772 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 53,780 psi | 88% | 2808 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,620 psi | 86% | 2789 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,736 psi | 87% | 2746 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,950 psi | 80% | 2890 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 53,722 psi | 88% | 2848 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 60% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,518 psi | 86% | 2749 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,779 psi | 87% | 2740 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 51,837 psi | 85% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,851 psi | 85% | 2746 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 55,042 psi | 90% | 2900 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 53,098 psi | 87% | 2736 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,505 psi | 89% | 2782 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,604 psi | 83% | 2736 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,301 psi | 88% | 2802 fps | 98.7% |
| Norma MRP | <<locked>> | 94% | 52,982 psi | 87% | 2884 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 53,722 psi | 88% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,822 psi | 85% | 2858 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 88% | 52,649 psi | 86% | 2802 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,882 psi | 88% | 2854 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 61% | 1795 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,866 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,042 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,374 psi | 88% | 2864 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,298 psi | 81% | 2887 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 82% | 51,880 psi | 85% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,940 psi | 89% | 2785 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 94% | 54,824 psi | 90% | 2841 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 54,505 psi | 89% | 2766 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,098 psi | 87% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,505 psi | 89% | 2782 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,650 psi | 88% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,591 psi | 86% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,417 psi | 86% | 2690 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,389 psi | 89% | 2838 fps | 99.1% |
| Somchem S355 | <<locked>> | 82% | 51,895 psi | 85% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,808 psi | 85% | 2720 fps | 97% |
| Somchem S365 | <<locked>> | 90% | 53,664 psi | 88% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 51,909 psi | 85% | 2766 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 84% | 53,127 psi | 87% | 2690 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,069 psi | 85% | 2743 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,810 psi | 90% | 2795 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 54,795 psi | 90% | 2799 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,939 psi | 87% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,026 psi | 87% | 2874 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,286 psi | 86% | 2848 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,503 psi | 85% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,592 psi | 88% | 2818 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,100 psi | 90% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,735 psi | 85% | 2756 fps | 98.6% |
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% | 30,458 psi | 50% | 2333 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 41,524 psi | 68% | 2592 fps | 99.6% |
| Accurate MAGPRO | 91.4 gr | 92% | 48,225 psi | 79% | 2792 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 50,212 psi | 82% | 2684 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,536 psi | 62% | 2526 fps | 95% |
| ADI AR 2213 | <<locked>> | 90% | 43,816 psi | 72% | 2687 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 41,756 psi | 69% | 2635 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 34,592 psi | 57% | 2526 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,753 psi | 62% | 2526 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,140 psi | 84% | 2707 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,277 psi | 66% | 2605 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,340 psi | 76% | 2723 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,405 psi | 61% | 2520 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,826 psi | 62% | 2569 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,515 psi | 48% | 2369 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,399 psi | 48% | 2379 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,836 psi | 52% | 2484 fps | 97.3% |
| Bofors RP15 | <<locked>> | 88% | 37,449 psi | 61% | 2559 fps | 95% |
| Bofors RP30 | <<locked>> | 96% | 39,972 psi | 66% | 2644 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 37,826 psi | 62% | 2569 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,020 psi | 74% | 2605 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 40,147 psi | 66% | 2605 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 43,627 psi | 72% | 2644 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,354 psi | 76% | 2661 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 88% | 43,714 psi | 72% | 2635 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,006 psi | 76% | 2677 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,797 psi | 62% | 2497 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,449 psi | 61% | 2635 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 42,728 psi | 70% | 2661 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 45% | 1565 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,640 psi | 67% | 2536 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,543 psi | 76% | 2635 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 39,755 psi | 65% | 2543 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,498 psi | 75% | 2635 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 90% | 41,843 psi | 69% | 2657 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 43,947 psi | 72% | 2585 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,177 psi | 69% | 2569 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 29,878 psi | 49% | 2316 fps | 95% |
| Norma 204 | <<locked>> | 80% | 40,292 psi | 66% | 2562 fps | 95.8% |
| Norma MRP | 80 gr | 82% | 34,360 psi | 56% | 2516 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,191 psi | 68% | 2589 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,597 psi | 68% | 2664 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 39,972 psi | 66% | 2579 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 36,869 psi | 61% | 2543 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 46% | 1604 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,269 psi | 81% | 2769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,553 psi | 68% | 2615 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,089 psi | 66% | 2628 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,287 psi | 56% | 2549 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 48,646 psi | 80% | 2667 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,510 psi | 68% | 2562 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 39,015 psi | 64% | 2556 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 45,020 psi | 74% | 2605 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,947 psi | 72% | 2585 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 42,177 psi | 69% | 2569 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,053 psi | 82% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,356 psi | 81% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,033 psi | 71% | 2533 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,667 psi | 63% | 2552 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,762 psi | 80% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,397 psi | 75% | 2608 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 37,840 psi | 62% | 2543 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,577 psi | 57% | 2431 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 46,644 psi | 77% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,598 psi | 70% | 2585 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 36,608 psi | 60% | 2470 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 41,916 psi | 69% | 2585 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 32,909 psi | 54% | 2438 fps | 98.4% |
| Vihtavuori N560 | 85.9 gr | 88% | 43,018 psi | 71% | 2694 fps | 95% |
| Vihtavuori N565 | <<locked>> | 94% | 42,467 psi | 70% | 2667 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,698 psi | 68% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,627 psi | 72% | 2644 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,947 psi | 43% | 2352 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,899 psi | 64% | 2523 fps | 95.6% |
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 74 powders for .338 Lapua Mag. loaded with the .338 | 225gr | CutEdge Maximus. Winchester StaBALL HD delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,969 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.5 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | CutEdge Maximus 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.