Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | NorthFork Bonded Core 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% | 53,388 psi | 88% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,839 psi | 90% | 2812 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 51,692 psi | 85% | 2854 fps | 96.9% |
| ADI AR 2209 | <<locked>> | 90% | 51,837 psi | 85% | 2805 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 94% | 53,243 psi | 87% | 2861 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,630 psi | 78% | 2756 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,395 psi | 70% | 2717 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,156 psi | 86% | 2802 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,069 psi | 85% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,953 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,955 psi | 90% | 2848 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,200 psi | 87% | 2861 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,230 psi | 89% | 2838 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,345 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,418 psi | 89% | 2920 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 52,243 psi | 86% | 2841 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,545 psi | 81% | 2828 fps | 98.1% |
| Bofors RP5 | <<locked>> | 94% | 53,200 psi | 87% | 2861 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 53,795 psi | 88% | 2756 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,518 psi | 86% | 2844 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 52,779 psi | 87% | 2805 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 82% | 52,025 psi | 85% | 2762 fps | 99% |
| Hodgdon H4831 | <<locked>> | 92% | 53,229 psi | 87% | 2802 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,156 psi | 86% | 2785 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,373 psi | 86% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,402 psi | 86% | 2956 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,895 psi | 87% | 2838 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1765 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 51,909 psi | 85% | 2743 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 51,880 psi | 85% | 2726 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 55,042 psi | 90% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,534 psi | 90% | 2792 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 54,636 psi | 90% | 2894 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 52,605 psi | 86% | 2733 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,896 psi | 88% | 2772 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,302 psi | 89% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,634 psi | 86% | 2792 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 37,942 psi | 62% | 2638 fps | 97% |
| Norma MRP | <<locked>> | 92% | 52,808 psi | 87% | 2881 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 53,171 psi | 87% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 51,387 psi | 84% | 2851 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 52,141 psi | 86% | 2799 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 53,577 psi | 88% | 2851 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 62% | 1811 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,650 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,939 psi | 87% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,953 psi | 87% | 2953 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,964 psi | 79% | 2831 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 54,969 psi | 90% | 2759 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,316 psi | 88% | 2779 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 92% | 54,549 psi | 90% | 2841 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 53,795 psi | 88% | 2756 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,605 psi | 86% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,896 psi | 88% | 2772 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,042 psi | 90% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,100 psi | 90% | 2733 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,114 psi | 89% | 2835 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 54,824 psi | 90% | 2756 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,810 psi | 90% | 2772 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 53,432 psi | 88% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,027 psi | 90% | 2815 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 52,417 psi | 86% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 51,561 psi | 85% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,505 psi | 89% | 2792 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,288 psi | 89% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,011 psi | 87% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,765 psi | 87% | 2874 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 98% | 52,475 psi | 86% | 2848 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,534 psi | 90% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,982 psi | 87% | 2808 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,227 psi | 84% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,042 psi | 90% | 2808 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% | 33,257 psi | 55% | 2398 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 44,686 psi | 73% | 2648 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 44,875 psi | 74% | 2730 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 37,202 psi | 61% | 2516 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 88% | 43,439 psi | 71% | 2680 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 96% | 41,698 psi | 68% | 2638 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 92% | 32,750 psi | 54% | 2474 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,637 psi | 62% | 2523 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,641 psi | 70% | 2651 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,226 psi | 81% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,304 psi | 61% | 2516 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,913 psi | 62% | 2569 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,894 psi | 52% | 2425 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,733 psi | 49% | 2385 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,722 psi | 57% | 2552 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 37,565 psi | 62% | 2559 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 40,335 psi | 66% | 2651 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 37,913 psi | 62% | 2569 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 47,442 psi | 78% | 2651 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 39,943 psi | 66% | 2602 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 46,296 psi | 76% | 2694 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 48,863 psi | 80% | 2710 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 43,424 psi | 71% | 2628 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,571 psi | 75% | 2671 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,263 psi | 66% | 2539 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,637 psi | 62% | 2641 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,730 psi | 75% | 2717 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 45% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,888 psi | 70% | 2582 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,747 psi | 80% | 2677 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,554 psi | 70% | 2598 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,409 psi | 70% | 2575 fps | 95% |
| IMR 7828 SSC | <<locked>> | 88% | 41,800 psi | 69% | 2657 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 46,427 psi | 76% | 2628 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,701 psi | 73% | 2615 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 30,530 psi | 50% | 2329 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 42,888 psi | 70% | 2618 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 35,505 psi | 58% | 2579 fps | 96% |
| Norma MRP | 80.6 gr | 80% | 34,505 psi | 57% | 2516 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 43,772 psi | 72% | 2635 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 41,394 psi | 68% | 2661 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,670 psi | 70% | 2631 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 34,490 psi | 57% | 2484 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 46% | 1617 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,570 psi | 73% | 2667 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,728 psi | 70% | 2680 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,389 psi | 56% | 2552 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,454 psi | 73% | 2762 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 51,532 psi | 85% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,292 psi | 68% | 2559 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,550 psi | 60% | 2500 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,442 psi | 78% | 2651 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,427 psi | 76% | 2628 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,701 psi | 73% | 2615 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,822 psi | 85% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,368 psi | 74% | 2575 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,230 psi | 59% | 2497 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 51,474 psi | 85% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,875 psi | 74% | 2602 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 40,640 psi | 67% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,130 psi | 61% | 2487 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 49,211 psi | 81% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,281 psi | 74% | 2631 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,666 psi | 60% | 2470 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,556 psi | 73% | 2631 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,679 psi | 59% | 2500 fps | 99.2% |
| Vihtavuori N560 | 86.7 gr | 86% | 42,931 psi | 70% | 2690 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 42,859 psi | 70% | 2677 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,237 psi | 73% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,456 psi | 76% | 2697 fps | 99% |
| Winchester StaBALL HD | 79.8 gr | 80% | 28,311 psi | 46% | 2431 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,914 psi | 64% | 2523 fps | 95.8% |
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 | NorthFork Bonded Core. Hodgdon Retumbo delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,765 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 1:15.0 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 | NorthFork Bonded Core 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.