Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Frontier PH HPBT bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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% | 51,692 psi | 85% | 2749 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 53,243 psi | 87% | 2785 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,795 psi | 88% | 2887 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 54,911 psi | 90% | 2753 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,041 psi | 89% | 2835 fps | 99% |
| ADI AR 2213 | <<locked>> | 94% | 51,764 psi | 85% | 2831 fps | 97.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,180 psi | 76% | 2723 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,104 psi | 67% | 2684 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,027 psi | 89% | 2841 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,401 psi | 84% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,519 psi | 88% | 2822 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,114 psi | 90% | 2887 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,446 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,851 psi | 85% | 2864 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,431 psi | 86% | 2890 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,114 psi | 89% | 2871 fps | 99.1% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,805 psi | 78% | 2795 fps | 97.6% |
| Bofors RP5 | <<locked>> | 96% | 55,114 psi | 90% | 2887 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 52,562 psi | 86% | 2733 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,995 psi | 84% | 2815 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 86% | 55,013 psi | 90% | 2838 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 54,346 psi | 89% | 2795 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 51,692 psi | 85% | 2776 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,302 psi | 89% | 2815 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,418 psi | 89% | 2766 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,763 psi | 83% | 2920 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 84% | 51,372 psi | 84% | 2812 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1755 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,969 psi | 89% | 2772 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,143 psi | 89% | 2759 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 53,592 psi | 88% | 2779 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,229 psi | 87% | 2766 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 96% | 53,069 psi | 87% | 2867 fps | 98.1% |
| Lovex S065 | <<locked>> | 86% | 54,563 psi | 90% | 2759 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,707 psi | 87% | 2753 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,808 psi | 87% | 2766 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,824 psi | 90% | 2822 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 36,564 psi | 60% | 2605 fps | 96.3% |
| Norma MRP | <<locked>> | 94% | 54,911 psi | 90% | 2910 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 51,880 psi | 85% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,461 psi | 88% | 2884 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 54,215 psi | 89% | 2825 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,677 psi | 85% | 2822 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,608 psi | 62% | 1798 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,592 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,214 psi | 87% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,387 psi | 84% | 2831 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,111 psi | 84% | 2917 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 53,766 psi | 88% | 2740 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,054 psi | 85% | 2753 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 92% | 53,011 psi | 87% | 2812 fps | 99% |
| Rottweil R 907 | <<locked>> | 84% | 52,562 psi | 86% | 2733 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,563 psi | 90% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,707 psi | 87% | 2753 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,056 psi | 90% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,882 psi | 88% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,954 psi | 89% | 2713 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,576 psi | 86% | 2808 fps | 98.9% |
| Somchem S355 | <<locked>> | 82% | 53,417 psi | 88% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,447 psi | 88% | 2743 fps | 97.4% |
| Somchem S365 | <<locked>> | 88% | 51,866 psi | 85% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,577 psi | 88% | 2789 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 54,578 psi | 90% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,708 psi | 88% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,982 psi | 87% | 2766 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 86% | 52,779 psi | 87% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,882 psi | 90% | 2838 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,882 psi | 90% | 2904 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,317 psi | 89% | 2877 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,156 psi | 87% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,721 psi | 85% | 2785 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,084 psi | 87% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,287 psi | 87% | 2779 fps | 98.9% |
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% | 32,169 psi | 53% | 2369 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 43,294 psi | 71% | 2621 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 46,688 psi | 77% | 2762 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 51,474 psi | 85% | 2700 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,783 psi | 64% | 2549 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 42,337 psi | 70% | 2654 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 98% | 43,308 psi | 71% | 2667 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 94% | 33,895 psi | 56% | 2507 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,655 psi | 68% | 2631 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,819 psi | 79% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,696 psi | 64% | 2546 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,840 psi | 60% | 2543 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,908 psi | 51% | 2402 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,863 psi | 47% | 2356 fps | 95% |
| Alliant Reloder-26 | 81 gr | 80% | 33,533 psi | 55% | 2523 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 39,030 psi | 64% | 2592 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 38,899 psi | 64% | 2621 fps | 95% |
| Bofors RP5 | <<locked>> | 84% | 36,840 psi | 60% | 2543 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,369 psi | 76% | 2628 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 94% | 41,568 psi | 68% | 2635 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 45,049 psi | 74% | 2667 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 47,776 psi | 78% | 2684 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 45,165 psi | 74% | 2657 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,367 psi | 73% | 2644 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,247 psi | 64% | 2520 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,477 psi | 60% | 2605 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 44,280 psi | 73% | 2687 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 45% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,901 psi | 69% | 2559 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,747 psi | 78% | 2654 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 41,278 psi | 68% | 2569 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,976 psi | 72% | 2602 fps | 95.3% |
| IMR 7828 SSC | 85.1 gr | 90% | 43,337 psi | 71% | 2687 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 45,397 psi | 75% | 2608 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 43,642 psi | 72% | 2595 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 31,575 psi | 52% | 2356 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 41,756 psi | 69% | 2592 fps | 96.3% |
| Norma 217 | <<locked>> | 98% | 34,301 psi | 56% | 2546 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 33,460 psi | 55% | 2487 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 42,627 psi | 70% | 2612 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 40,263 psi | 66% | 2635 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 41,495 psi | 68% | 2605 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 35,868 psi | 59% | 2516 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 46% | 1611 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,778 psi | 83% | 2789 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,149 psi | 71% | 2641 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,582 psi | 68% | 2654 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,388 psi | 55% | 2520 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,299 psi | 83% | 2690 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,931 psi | 70% | 2589 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 37,927 psi | 62% | 2530 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 46,369 psi | 76% | 2628 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,397 psi | 75% | 2608 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 43,642 psi | 72% | 2595 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,619 psi | 85% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,633 psi | 83% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,411 psi | 73% | 2552 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,594 psi | 62% | 2526 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,256 psi | 83% | 2687 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,801 psi | 72% | 2579 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,421 psi | 65% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,187 psi | 59% | 2464 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,080 psi | 79% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,019 psi | 72% | 2608 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,650 psi | 59% | 2444 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 43,540 psi | 71% | 2612 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 34,693 psi | 57% | 2477 fps | 98.9% |
| Vihtavuori N560 | <<locked>> | 88% | 44,570 psi | 73% | 2723 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 94% | 44,266 psi | 73% | 2700 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,134 psi | 71% | 2572 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,208 psi | 74% | 2671 fps | 98.7% |
| Winchester StaBALL HD | 77.8 gr | 80% | 27,427 psi | 45% | 2402 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,753 psi | 62% | 2497 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 73 powders for .338 Lapua Mag. loaded with the .338 | 225gr | Frontier PH HPBT. Winchester StaBALL HD delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,940 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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. Alliant Reloder-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | Frontier PH HPBT 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.