Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | Nosler Expansion Tip bullet and 75 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 Alliant Reloder-26.
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% | 51,721 psi | 85% | 2746 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 53,505 psi | 88% | 2789 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,070 psi | 89% | 2887 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 52,402 psi | 86% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,679 psi | 90% | 2841 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 52,402 psi | 86% | 2838 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,435 psi | 63% | 2618 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,316 psi | 88% | 2733 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,694 psi | 90% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,040 psi | 85% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,186 psi | 89% | 2828 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 51,909 psi | 85% | 2835 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,649 psi | 86% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,631 psi | 80% | 2812 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,591 psi | 86% | 2894 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,389 psi | 89% | 2871 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 53,940 psi | 89% | 2746 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,425 psi | 73% | 2733 fps | 96.6% |
| Bofors RP5 | <<locked>> | 96% | 51,909 psi | 85% | 2835 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 53,403 psi | 88% | 2740 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,935 psi | 79% | 2753 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 54,230 psi | 89% | 2766 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,083 psi | 86% | 2785 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 51,764 psi | 85% | 2749 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 94% | 52,504 psi | 86% | 2782 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,071 psi | 90% | 2822 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,911 psi | 90% | 2772 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,630 psi | 78% | 2858 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 52,112 psi | 86% | 2818 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 60% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,824 psi | 90% | 2779 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,056 psi | 90% | 2766 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 54,128 psi | 89% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,925 psi | 89% | 2769 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 53,548 psi | 88% | 2871 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 51,996 psi | 85% | 2713 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,258 psi | 87% | 2756 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,240 psi | 81% | 2707 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 51,924 psi | 85% | 2772 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 51,358 psi | 84% | 2854 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 52,373 psi | 86% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,012 psi | 89% | 2887 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 54,795 psi | 90% | 2831 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,040 psi | 85% | 2822 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,362 psi | 61% | 1785 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,114 psi | 89% | 2753 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,474 psi | 85% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,519 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,938 psi | 85% | 2838 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,761 psi | 78% | 2851 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 54,215 psi | 89% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,750 psi | 87% | 2759 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 53,388 psi | 88% | 2815 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 53,403 psi | 88% | 2740 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 51,996 psi | 85% | 2713 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,258 psi | 87% | 2756 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,475 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,998 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,781 psi | 90% | 2720 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,939 psi | 87% | 2808 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 54,172 psi | 89% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,128 psi | 89% | 2749 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 52,170 psi | 86% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,911 psi | 89% | 2789 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 51,982 psi | 85% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,360 psi | 89% | 2769 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,345 psi | 88% | 2766 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,330 psi | 88% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,926 psi | 90% | 2838 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 51,488 psi | 85% | 2844 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 2815 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,911 psi | 89% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,272 psi | 86% | 2789 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,736 psi | 87% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,998 psi | 89% | 2785 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 3100 | <<locked>> | 82% | 31,734 psi | 52% | 2362 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 40,451 psi | 66% | 2569 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 46,746 psi | 77% | 2762 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 49,197 psi | 81% | 2661 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,073 psi | 64% | 2552 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 90% | 42,641 psi | 70% | 2654 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 33,707 psi | 55% | 2497 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,009 psi | 82% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,262 psi | 64% | 2582 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,063 psi | 74% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,899 psi | 64% | 2549 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,392 psi | 65% | 2602 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,703 psi | 47% | 2339 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,545 psi | 50% | 2408 fps | 95.7% |
| Alliant Reloder-26 | 78.6 gr | 80% | 30,922 psi | 51% | 2457 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 38,870 psi | 64% | 2589 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,502 psi | 83% | 2697 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,379 psi | 68% | 2671 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 39,392 psi | 65% | 2602 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 44,034 psi | 72% | 2579 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 41,858 psi | 69% | 2631 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 50,821 psi | 83% | 2713 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,496 psi | 70% | 2615 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,368 psi | 74% | 2638 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 45,774 psi | 75% | 2664 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,730 psi | 73% | 2648 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,767 psi | 60% | 2470 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,376 psi | 60% | 2598 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,524 psi | 68% | 2631 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 45% | 1555 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,740 psi | 65% | 2513 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,600 psi | 75% | 2612 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,754 psi | 64% | 2520 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,628 psi | 73% | 2608 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 43,598 psi | 72% | 2687 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 42,989 psi | 71% | 2559 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 41,234 psi | 68% | 2543 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 31,009 psi | 51% | 2343 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 39,407 psi | 65% | 2539 fps | 95.4% |
| Norma MRP | 78.2 gr | 82% | 33,431 psi | 55% | 2487 fps | 95% |
| Norma URP | <<locked>> | 80% | 40,161 psi | 66% | 2562 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 43,453 psi | 71% | 2697 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 39,059 psi | 64% | 2552 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 35,810 psi | 59% | 2510 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 46% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,662 psi | 83% | 2697 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,921 psi | 79% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,408 psi | 66% | 2585 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,059 psi | 64% | 2598 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,636 psi | 59% | 2579 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 47,514 psi | 78% | 2644 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,410 psi | 71% | 2595 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 38,101 psi | 63% | 2533 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,034 psi | 72% | 2579 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,989 psi | 71% | 2559 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 41,234 psi | 68% | 2543 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,023 psi | 80% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,457 psi | 80% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,989 psi | 69% | 2507 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,753 psi | 62% | 2526 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 47,659 psi | 78% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,282 psi | 78% | 2638 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 36,753 psi | 60% | 2520 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,042 psi | 59% | 2457 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 45,614 psi | 75% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,597 psi | 68% | 2559 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 35,665 psi | 59% | 2444 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 40,973 psi | 67% | 2559 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,010 psi | 53% | 2415 fps | 98.1% |
| Vihtavuori N560 | 85.8 gr | 90% | 44,788 psi | 74% | 2723 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 44,150 psi | 72% | 2697 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,596 psi | 67% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,656 psi | 70% | 2618 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,295 psi | 42% | 2323 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,971 psi | 62% | 2500 fps | 95.1% |
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 81 powders for .338 Lapua Mag. loaded with the .338 | 225gr | Nosler Expansion Tip. Winchester StaBALL HD delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,936 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.0 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | Nosler Expansion Tip they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Norma 217, ReloadSwiss RS 80 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.