Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Hornady InterLock bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, 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.
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 3100 | <<locked>> | 94% | 52,678 psi | 86% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,998 psi | 89% | 2808 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 51,372 psi | 84% | 2858 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 90% | 51,648 psi | 85% | 2808 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 94% | 52,982 psi | 87% | 2864 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,326 psi | 78% | 2759 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,959 psi | 69% | 2713 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,982 psi | 85% | 2808 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 51,692 psi | 85% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,460 psi | 86% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,679 psi | 90% | 2854 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,808 psi | 87% | 2858 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,853 psi | 88% | 2838 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,142 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,114 psi | 89% | 2920 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 51,837 psi | 85% | 2844 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,139 psi | 81% | 2828 fps | 98.1% |
| Bofors RP5 | <<locked>> | 94% | 52,808 psi | 87% | 2858 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 53,432 psi | 88% | 2759 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,243 psi | 86% | 2848 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 52,431 psi | 86% | 2808 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 82% | 51,779 psi | 85% | 2769 fps | 99% |
| Hodgdon H4831 | <<locked>> | 92% | 52,924 psi | 87% | 2805 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,880 psi | 85% | 2789 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,982 psi | 85% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,112 psi | 86% | 2956 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,605 psi | 86% | 2838 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 61% | 1772 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,926 psi | 90% | 2799 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,955 psi | 90% | 2785 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,534 psi | 90% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,128 psi | 89% | 2792 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 54,346 psi | 89% | 2900 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 52,025 psi | 85% | 2730 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,432 psi | 88% | 2776 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,592 psi | 88% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,257 psi | 86% | 2795 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 37,376 psi | 61% | 2631 fps | 96.8% |
| Norma MRP | <<locked>> | 92% | 52,417 psi | 86% | 2877 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 52,779 psi | 87% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,071 psi | 90% | 2920 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 86% | 51,721 psi | 85% | 2795 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 53,200 psi | 87% | 2851 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1814 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,288 psi | 89% | 2831 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,533 psi | 86% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,707 psi | 87% | 2953 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,514 psi | 78% | 2831 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 54,317 psi | 89% | 2759 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,968 psi | 87% | 2782 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 92% | 54,041 psi | 89% | 2841 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 53,432 psi | 88% | 2759 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,025 psi | 85% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,432 psi | 88% | 2776 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,752 psi | 90% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,621 psi | 90% | 2736 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,606 psi | 88% | 2835 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 54,259 psi | 89% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,404 psi | 89% | 2772 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 52,924 psi | 87% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,563 psi | 90% | 2815 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 51,924 psi | 85% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,578 psi | 90% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,099 psi | 89% | 2795 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 53,838 psi | 88% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,533 psi | 86% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,388 psi | 86% | 2871 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 98% | 52,025 psi | 85% | 2848 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,128 psi | 89% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,605 psi | 86% | 2808 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,024 psi | 84% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,665 psi | 90% | 2812 fps | 99.2% |
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% | 32,372 psi | 53% | 2382 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 43,888 psi | 72% | 2644 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 44,382 psi | 73% | 2726 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 36,724 psi | 60% | 2513 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 42,975 psi | 71% | 2677 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 41,263 psi | 68% | 2638 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 34,389 psi | 56% | 2530 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,159 psi | 61% | 2520 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,264 psi | 69% | 2651 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,921 psi | 80% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,782 psi | 60% | 2510 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,405 psi | 61% | 2566 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,256 psi | 51% | 2415 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,051 psi | 48% | 2372 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,953 psi | 56% | 2539 fps | 98.3% |
| Bofors RP15 | <<locked>> | 86% | 37,057 psi | 61% | 2556 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 39,784 psi | 65% | 2648 fps | 95.5% |
| Bofors RP5 | <<locked>> | 84% | 37,405 psi | 61% | 2566 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 46,920 psi | 77% | 2651 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,508 psi | 65% | 2602 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,759 psi | 75% | 2690 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 48,457 psi | 80% | 2710 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 42,989 psi | 71% | 2628 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,150 psi | 74% | 2671 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,769 psi | 65% | 2539 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,043 psi | 61% | 2631 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,281 psi | 74% | 2713 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 45% | 1585 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,467 psi | 70% | 2582 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,414 psi | 79% | 2677 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 41,800 psi | 69% | 2589 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,759 psi | 73% | 2628 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 41,321 psi | 68% | 2654 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,890 psi | 75% | 2628 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,092 psi | 72% | 2615 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 29,675 psi | 49% | 2313 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 42,395 psi | 70% | 2615 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 34,824 psi | 57% | 2569 fps | 95.8% |
| Norma MRP | 81.8 gr | 80% | 33,968 psi | 56% | 2510 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 43,265 psi | 71% | 2631 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 41,002 psi | 67% | 2661 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,148 psi | 69% | 2625 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 88% | 36,448 psi | 60% | 2539 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 46% | 1621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,888 psi | 72% | 2661 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,293 psi | 69% | 2677 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,881 psi | 56% | 2546 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,845 psi | 72% | 2756 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 50,894 psi | 84% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,799 psi | 67% | 2556 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 35,984 psi | 59% | 2497 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 46,920 psi | 77% | 2651 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,890 psi | 75% | 2628 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,092 psi | 72% | 2615 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,343 psi | 84% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,788 psi | 74% | 2575 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,174 psi | 63% | 2546 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,952 psi | 84% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,367 psi | 73% | 2602 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 40,074 psi | 66% | 2589 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,448 psi | 60% | 2477 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 80% | 48,689 psi | 80% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,788 psi | 74% | 2631 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,158 psi | 59% | 2464 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,106 psi | 72% | 2631 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 34,911 psi | 57% | 2487 fps | 99% |
| Vihtavuori N560 | 87.9 gr | 86% | 42,395 psi | 70% | 2687 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 42,250 psi | 69% | 2671 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,816 psi | 72% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,919 psi | 75% | 2694 fps | 99% |
| Winchester StaBALL HD | 80.9 gr | 80% | 27,528 psi | 45% | 2411 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,406 psi | 63% | 2520 fps | 95.7% |
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 72 powders for .338 Lapua Mag. loaded with the .338 | 225gr | Hornady InterLock. Hodgdon Retumbo delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,956 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 1:16.5 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, Norma MRP, Vihtavuori N560 rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | Hornady InterLock 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.