Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Speer TBBC 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 53,084 psi | 87% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,476 psi | 89% | 2805 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 51,416 psi | 84% | 2848 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 90% | 51,721 psi | 85% | 2802 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 94% | 52,982 psi | 87% | 2854 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,398 psi | 78% | 2753 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,206 psi | 69% | 2710 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,909 psi | 85% | 2795 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 51,721 psi | 85% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,649 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,839 psi | 90% | 2848 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,910 psi | 87% | 2854 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,911 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,098 psi | 87% | 2884 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,114 psi | 89% | 2917 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 51,967 psi | 85% | 2838 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,226 psi | 81% | 2822 fps | 98% |
| Bofors RP5 | <<locked>> | 94% | 52,910 psi | 87% | 2854 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 53,650 psi | 88% | 2756 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,272 psi | 86% | 2841 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 84% | 52,649 psi | 86% | 2802 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 82% | 51,909 psi | 85% | 2759 fps | 99% |
| Hodgdon H4831 | <<locked>> | 92% | 52,953 psi | 87% | 2799 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,880 psi | 85% | 2779 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,257 psi | 86% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,156 psi | 86% | 2949 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,591 psi | 86% | 2831 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,970 psi | 61% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 51,648 psi | 85% | 2736 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,042 psi | 90% | 2776 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,940 psi | 90% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,273 psi | 89% | 2785 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 96% | 54,360 psi | 89% | 2890 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 52,301 psi | 86% | 2726 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,780 psi | 88% | 2769 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 2782 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,330 psi | 86% | 2789 fps | 98.7% |
| Norma 217ᴾ | <<locked>> | 100% | 37,724 psi | 62% | 2635 fps | 96.9% |
| Norma MRP | <<locked>> | 92% | 52,518 psi | 86% | 2874 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 53,040 psi | 87% | 2789 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,984 psi | 90% | 2910 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 86% | 51,895 psi | 85% | 2792 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 53,316 psi | 88% | 2848 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 62% | 1808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,346 psi | 89% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,649 psi | 86% | 2851 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,707 psi | 87% | 2946 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,558 psi | 78% | 2825 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 82% | 54,824 psi | 90% | 2759 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,011 psi | 87% | 2772 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 92% | 54,230 psi | 89% | 2835 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 53,650 psi | 88% | 2756 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,301 psi | 86% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,780 psi | 88% | 2769 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,911 psi | 90% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,940 psi | 90% | 2730 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,795 psi | 88% | 2831 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 54,462 psi | 89% | 2749 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,578 psi | 90% | 2766 fps | 97.7% |
| Somchem S365 | <<locked>> | 88% | 53,258 psi | 87% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,737 psi | 90% | 2808 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 52,301 psi | 86% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,839 psi | 90% | 2782 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,244 psi | 89% | 2789 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 54,027 psi | 89% | 2785 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,707 psi | 87% | 2808 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,489 psi | 86% | 2867 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 98% | 52,228 psi | 86% | 2844 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,273 psi | 89% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,823 psi | 87% | 2805 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,998 psi | 90% | 2959 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,549 psi | 90% | 2802 fps | 99.1% |
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% | 32,996 psi | 54% | 2392 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 44,367 psi | 73% | 2641 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 44,759 psi | 73% | 2726 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 37,086 psi | 61% | 2513 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 43,192 psi | 71% | 2674 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 41,495 psi | 68% | 2631 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 92% | 32,547 psi | 53% | 2470 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,391 psi | 61% | 2516 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,496 psi | 70% | 2651 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,081 psi | 81% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,057 psi | 61% | 2510 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,666 psi | 62% | 2562 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,734 psi | 52% | 2421 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,530 psi | 48% | 2379 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,476 psi | 57% | 2546 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 37,405 psi | 61% | 2556 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 40,103 psi | 66% | 2644 fps | 95.5% |
| Bofors RP5 | <<locked>> | 84% | 37,666 psi | 62% | 2562 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,282 psi | 78% | 2648 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,740 psi | 65% | 2595 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 46,021 psi | 76% | 2687 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,704 psi | 80% | 2703 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 43,149 psi | 71% | 2621 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,310 psi | 74% | 2664 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,118 psi | 66% | 2539 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,405 psi | 61% | 2631 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,469 psi | 75% | 2710 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 45% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,786 psi | 70% | 2579 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,646 psi | 80% | 2671 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,264 psi | 69% | 2592 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,860 psi | 74% | 2621 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 41,524 psi | 68% | 2651 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,311 psi | 76% | 2625 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,570 psi | 73% | 2612 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,400 psi | 50% | 2326 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,598 psi | 70% | 2612 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 35,302 psi | 58% | 2572 fps | 95.8% |
| Norma MRP | 80.3 gr | 80% | 34,389 psi | 56% | 2513 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,642 psi | 72% | 2631 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 41,336 psi | 68% | 2661 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,380 psi | 70% | 2625 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 34,272 psi | 56% | 2477 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 46% | 1614 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,251 psi | 73% | 2661 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,438 psi | 70% | 2674 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,316 psi | 56% | 2549 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,077 psi | 72% | 2756 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 51,401 psi | 84% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,017 psi | 67% | 2552 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 36,289 psi | 60% | 2493 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 47,282 psi | 78% | 2648 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,311 psi | 76% | 2625 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,570 psi | 73% | 2612 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,488 psi | 85% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,237 psi | 74% | 2572 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,464 psi | 63% | 2546 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,314 psi | 84% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,643 psi | 73% | 2595 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,466 psi | 66% | 2589 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,014 psi | 61% | 2484 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,037 psi | 81% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,005 psi | 74% | 2625 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,550 psi | 60% | 2467 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,425 psi | 73% | 2631 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,505 psi | 58% | 2493 fps | 99.1% |
| Vihtavuori N560 | 86.3 gr | 86% | 42,656 psi | 70% | 2684 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 42,598 psi | 70% | 2667 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,092 psi | 72% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,180 psi | 76% | 2690 fps | 99% |
| Winchester StaBALL HD | 79.4 gr | 80% | 28,079 psi | 46% | 2421 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,653 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 | Speer TBBC. Winchester StaBALL HD delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,959 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 1:15.0 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 | Speer TBBC 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.