Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Woodleigh HS bullet and 71 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 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 2700 | <<locked>> | 82% | 54,636 psi | 90% | 2726 fps | 99.5% |
| Accurate 3100 | <<locked>> | 94% | 53,780 psi | 88% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,085 psi | 90% | 2815 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,026 psi | 87% | 2871 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 90% | 52,257 psi | 86% | 2812 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 94% | 53,664 psi | 88% | 2871 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,095 psi | 79% | 2766 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,830 psi | 70% | 2726 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,373 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,287 psi | 87% | 2831 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 51,953 psi | 85% | 2805 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,577 psi | 88% | 2867 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,650 psi | 90% | 2844 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,925 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,085 psi | 90% | 2930 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 52,620 psi | 86% | 2851 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,908 psi | 82% | 2835 fps | 98.2% |
| Bofors RP5 | <<locked>> | 94% | 53,577 psi | 88% | 2867 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 54,215 psi | 89% | 2766 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,026 psi | 87% | 2854 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 84% | 53,243 psi | 87% | 2815 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 52,475 psi | 86% | 2772 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 92% | 53,606 psi | 88% | 2812 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,533 psi | 86% | 2792 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,837 psi | 87% | 2746 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,924 psi | 87% | 2966 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 53,287 psi | 87% | 2844 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 61% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,315 psi | 86% | 2753 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,301 psi | 86% | 2736 fps | 99.6% |
| IMR 4831 | <<locked>> | 86% | 52,054 psi | 85% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,897 psi | 90% | 2799 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 55,027 psi | 90% | 2904 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 52,823 psi | 87% | 2736 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,317 psi | 89% | 2782 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,694 psi | 90% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,823 psi | 87% | 2799 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 38,261 psi | 63% | 2648 fps | 97.1% |
| Norma MRP | <<locked>> | 92% | 53,243 psi | 87% | 2887 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 53,621 psi | 88% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 51,938 psi | 85% | 2864 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 86% | 52,402 psi | 86% | 2802 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 54,128 psi | 89% | 2861 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 62% | 1814 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,114 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,374 psi | 88% | 2864 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,461 psi | 88% | 2959 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2841 fps | 96.4% |
| Rottweil R 904 | <<locked>> | 90% | 53,693 psi | 88% | 2785 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 92% | 54,940 psi | 90% | 2848 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,215 psi | 89% | 2766 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,823 psi | 87% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,317 psi | 89% | 2782 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 51,938 psi | 85% | 2687 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,534 psi | 90% | 2841 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 55,085 psi | 90% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,561 psi | 85% | 2723 fps | 97.2% |
| Somchem S365 | <<locked>> | 88% | 53,882 psi | 88% | 2802 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,040 psi | 85% | 2769 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 82% | 52,895 psi | 87% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 51,967 psi | 85% | 2743 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,853 psi | 90% | 2799 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,563 psi | 90% | 2795 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,476 psi | 88% | 2822 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,142 psi | 87% | 2877 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 98% | 52,997 psi | 87% | 2861 fps | 98% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,632 psi | 81% | 2848 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,911 psi | 90% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,417 psi | 88% | 2818 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,938 psi | 85% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,663 psi | 85% | 2759 fps | 98.8% |
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% | 51,227 psi | 84% | 2674 fps | 99.2% |
| Accurate 3100 | <<locked>> | 80% | 33,518 psi | 55% | 2405 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 44,991 psi | 74% | 2654 fps | 99.9% |
| Accurate MAGPRO | 95.1 gr | 92% | 49,342 psi | 81% | 2808 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 37,565 psi | 62% | 2526 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 43,801 psi | 72% | 2690 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 41,989 psi | 69% | 2644 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 32,996 psi | 54% | 2484 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,931 psi | 70% | 2657 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,719 psi | 82% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,550 psi | 62% | 2523 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,305 psi | 63% | 2579 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,126 psi | 53% | 2431 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,936 psi | 49% | 2392 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,954 psi | 57% | 2559 fps | 98.6% |
| Bofors RP15 | <<locked>> | 86% | 37,942 psi | 62% | 2569 fps | 95.5% |
| Bofors RP30 | <<locked>> | 94% | 40,698 psi | 67% | 2661 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 38,305 psi | 63% | 2579 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 47,703 psi | 78% | 2657 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 40,248 psi | 66% | 2612 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 46,557 psi | 76% | 2700 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 49,110 psi | 81% | 2717 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 43,787 psi | 72% | 2638 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,963 psi | 75% | 2677 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,538 psi | 67% | 2546 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,491 psi | 58% | 2585 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,977 psi | 75% | 2723 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 45% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,308 psi | 71% | 2592 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,023 psi | 80% | 2684 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 42,815 psi | 70% | 2602 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,583 psi | 70% | 2579 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 42,003 psi | 69% | 2664 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,688 psi | 77% | 2635 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 44,947 psi | 74% | 2625 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 30,777 psi | 51% | 2336 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,120 psi | 71% | 2625 fps | 96.9% |
| Norma 217 | <<locked>> | 96% | 33,562 psi | 55% | 2530 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 34,882 psi | 57% | 2526 fps | 96% |
| Norma URP | <<locked>> | 80% | 44,063 psi | 72% | 2641 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 41,756 psi | 69% | 2671 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 42,931 psi | 70% | 2635 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 34,664 psi | 57% | 2490 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 46% | 1621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,831 psi | 74% | 2674 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,105 psi | 71% | 2690 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,780 psi | 57% | 2566 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,918 psi | 74% | 2772 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 82% | 41,510 psi | 68% | 2566 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 36,811 psi | 60% | 2507 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 47,703 psi | 78% | 2657 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,688 psi | 77% | 2635 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 44,947 psi | 74% | 2625 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,643 psi | 75% | 2582 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,492 psi | 60% | 2500 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 51,764 psi | 85% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,208 psi | 74% | 2608 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,089 psi | 67% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,391 psi | 61% | 2493 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 49,472 psi | 81% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,571 psi | 75% | 2638 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 34,563 psi | 57% | 2425 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,947 psi | 74% | 2641 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,071 psi | 59% | 2507 fps | 99.3% |
| Vihtavuori N560 | 87.2 gr | 86% | 43,134 psi | 71% | 2697 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 43,207 psi | 71% | 2684 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 46,151 psi | 76% | 2785 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,585 psi | 73% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,717 psi | 77% | 2703 fps | 99.1% |
| Winchester StaBALL HD | 80.3 gr | 80% | 28,500 psi | 47% | 2438 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,477 psi | 60% | 2474 fps | 95% |
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 76 powders for .338 Lapua Mag. loaded with the .338 | 225gr | Woodleigh HS. Hodgdon Retumbo delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,966 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:15.5 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, Accurate MAGPRO rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | Woodleigh HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 8133 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.