Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 210gr | Impala RNFP KO bullet and 69 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 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>> | 94% | 54,853 psi | 90% | 2867 fps | 99.9% |
| Accurate 4350 | <<locked>> | 84% | 52,605 psi | 86% | 2851 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 52,547 psi | 86% | 2940 fps | 96.3% |
| ADI AR 2209 | <<locked>> | 90% | 52,489 psi | 86% | 2887 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 94% | 53,650 psi | 88% | 2940 fps | 97.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,457 psi | 80% | 2831 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,584 psi | 72% | 2802 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,910 psi | 87% | 2887 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,910 psi | 87% | 2887 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,533 psi | 86% | 2900 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,548 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,344 psi | 86% | 2877 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,795 psi | 88% | 2943 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,839 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,027 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,401 psi | 84% | 2953 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,055 psi | 87% | 2930 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,270 psi | 83% | 2913 fps | 97.6% |
| Bofors RP5 | <<locked>> | 94% | 53,795 psi | 88% | 2943 fps | 98.7% |
| Bofors RP7 | <<locked>> | 84% | 54,723 psi | 90% | 2841 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,142 psi | 87% | 2923 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 53,693 psi | 88% | 2894 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 82% | 52,837 psi | 87% | 2848 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 92% | 53,664 psi | 88% | 2881 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,808 psi | 87% | 2864 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,142 psi | 87% | 2828 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,040 psi | 87% | 3035 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 84% | 53,548 psi | 88% | 2920 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 61% | 1827 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,576 psi | 86% | 2825 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,489 psi | 86% | 2808 fps | 99.3% |
| IMR 4831 | <<locked>> | 86% | 52,721 psi | 87% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,969 psi | 90% | 2867 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 94% | 51,648 psi | 85% | 2917 fps | 97.3% |
| Lovex S065 | <<locked>> | 84% | 53,693 psi | 88% | 2818 fps | 99.9% |
| Lovex S070 | <<locked>> | 84% | 52,040 psi | 85% | 2812 fps | 99.4% |
| Lovex S071 | <<locked>> | 98% | 52,533 psi | 86% | 2831 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 53,229 psi | 87% | 2874 fps | 98.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,494 psi | 65% | 2733 fps | 96.7% |
| Norma MRP | <<locked>> | 92% | 53,606 psi | 88% | 2969 fps | 99.5% |
| Norma URP | <<locked>> | 86% | 54,172 psi | 89% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,098 psi | 86% | 2933 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 86% | 52,881 psi | 87% | 2881 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 98% | 54,186 psi | 89% | 2933 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,116 psi | 63% | 1870 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,127 psi | 86% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,388 psi | 88% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,635 psi | 88% | 3031 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 90% | 53,896 psi | 88% | 2858 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 90% | 51,851 psi | 85% | 2867 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 84% | 54,723 psi | 90% | 2841 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,693 psi | 88% | 2818 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 52,040 psi | 85% | 2812 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,823 psi | 87% | 2766 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,708 psi | 90% | 2917 fps | 98.8% |
| Somchem S361 | <<locked>> | 88% | 52,156 psi | 86% | 2795 fps | 96.5% |
| Somchem S365 | <<locked>> | 88% | 54,418 psi | 89% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,678 psi | 86% | 2848 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 53,490 psi | 88% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,359 psi | 86% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,837 psi | 85% | 2822 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 84% | 51,895 psi | 85% | 2828 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,259 psi | 89% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,417 psi | 88% | 2956 fps | 97.2% |
| Vihtavuori N565 | <<locked>> | 98% | 53,635 psi | 88% | 2940 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,940 psi | 90% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,693 psi | 88% | 2894 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,706 psi | 85% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,982 psi | 85% | 2831 fps | 98.3% |
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% | 35,433 psi | 58% | 2503 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 46,398 psi | 76% | 2746 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 90% | 49,211 psi | 81% | 2877 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 82% | 40,886 psi | 67% | 2661 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 44,280 psi | 73% | 2759 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 98% | 45,556 psi | 75% | 2776 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 94% | 36,318 psi | 60% | 2625 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 41,191 psi | 68% | 2661 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 41,191 psi | 68% | 2661 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,569 psi | 72% | 2740 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,125 psi | 82% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,843 psi | 67% | 2657 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,117 psi | 64% | 2657 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,417 psi | 55% | 2523 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 31,314 psi | 51% | 2484 fps | 95.5% |
| Alliant Reloder-26 | 83.4 gr | 80% | 36,274 psi | 60% | 2654 fps | 98.3% |
| Bofors RP15 | <<locked>> | 88% | 41,394 psi | 68% | 2707 fps | 95.8% |
| Bofors RP30 | <<locked>> | 94% | 41,539 psi | 68% | 2740 fps | 95.1% |
| Bofors RP5 | <<locked>> | 84% | 39,117 psi | 64% | 2657 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 48,602 psi | 80% | 2736 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 43,729 psi | 72% | 2743 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,326 psi | 78% | 2782 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 49,617 psi | 81% | 2792 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 47,282 psi | 78% | 2766 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,311 psi | 76% | 2749 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,495 psi | 68% | 2631 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,841 psi | 64% | 2726 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,528 psi | 76% | 2802 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 46% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,859 psi | 72% | 2664 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,516 psi | 81% | 2756 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 43,976 psi | 72% | 2690 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,919 psi | 75% | 2707 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 45,469 psi | 75% | 2799 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,761 psi | 78% | 2720 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 46,093 psi | 76% | 2707 fps | 98.6% |
| Lovex S071 | <<locked>> | 82% | 32,808 psi | 54% | 2438 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 43,830 psi | 72% | 2700 fps | 96.3% |
| Norma 217 | <<locked>> | 98% | 37,202 psi | 61% | 2680 fps | 95.8% |
| Norma MRP | 80.9 gr | 80% | 35,969 psi | 59% | 2612 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 44,962 psi | 74% | 2723 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 42,583 psi | 70% | 2749 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 43,714 psi | 72% | 2717 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 38,363 psi | 63% | 2631 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 47% | 1673 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,832 psi | 75% | 2759 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,685 psi | 72% | 2769 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,940 psi | 59% | 2648 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 84% | 44,904 psi | 74% | 2694 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 82% | 40,350 psi | 66% | 2644 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 48,602 psi | 80% | 2736 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,761 psi | 78% | 2720 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 46,093 psi | 76% | 2707 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,688 psi | 77% | 2661 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,001 psi | 66% | 2641 fps | 95.5% |
| Somchem S361 | <<locked>> | 86% | 48,921 psi | 80% | 2740 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 41,989 psi | 69% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,740 psi | 64% | 2579 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 50,343 psi | 83% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,383 psi | 76% | 2720 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 37,971 psi | 62% | 2556 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 45,788 psi | 75% | 2723 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 37,521 psi | 62% | 2602 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 88% | 46,775 psi | 77% | 2835 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 44,150 psi | 72% | 2766 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,194 psi | 74% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,427 psi | 78% | 2782 fps | 98.7% |
| Winchester StaBALL HD | 80.1 gr | 80% | 30,110 psi | 49% | 2539 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,118 psi | 66% | 2608 fps | 95.4% |
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 69 powders for .338 Lapua Mag. loaded with the .338 | 210gr | Impala RNFP KO. Hodgdon Retumbo delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,035 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 210.0 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, Alliant Reloder-26 rank at the top here: for .338 Lapua Mag. with the .338 | 210gr | Impala RNFP KO 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.