Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 210gr | Swift Scirocco 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% | 52,634 psi | 86% | 2844 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 54,273 psi | 89% | 2890 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,824 psi | 90% | 2986 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 82% | 52,794 psi | 87% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,056 psi | 90% | 2936 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 96% | 52,852 psi | 87% | 2933 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,073 psi | 64% | 2707 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,780 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,085 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,475 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,607 psi | 90% | 2923 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,373 psi | 86% | 2930 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,258 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,197 psi | 81% | 2907 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,316 psi | 88% | 2995 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 2969 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 54,810 psi | 90% | 2851 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,078 psi | 74% | 2825 fps | 96.1% |
| Bofors RP5 | <<locked>> | 96% | 52,373 psi | 86% | 2930 fps | 98.4% |
| Bofors RP7 | <<locked>> | 86% | 53,954 psi | 89% | 2838 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,515 psi | 80% | 2844 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 54,911 psi | 90% | 2867 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,576 psi | 86% | 2884 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 84% | 52,156 psi | 86% | 2844 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 94% | 53,011 psi | 87% | 2874 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,880 psi | 85% | 2858 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,909 psi | 85% | 2818 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,124 psi | 79% | 2949 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 86% | 52,692 psi | 87% | 2917 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 60% | 1818 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 51,938 psi | 85% | 2822 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,228 psi | 86% | 2812 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 54,824 psi | 90% | 2884 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,317 psi | 89% | 2864 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,085 psi | 89% | 2966 fps | 97.6% |
| Lovex S065 | <<locked>> | 86% | 52,475 psi | 86% | 2812 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 53,896 psi | 88% | 2854 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,212 psi | 82% | 2808 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 52,388 psi | 86% | 2867 fps | 98.1% |
| Norma MRP | <<locked>> | 94% | 52,025 psi | 85% | 2953 fps | 99.3% |
| Norma URP | <<locked>> | 88% | 52,924 psi | 87% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,766 psi | 90% | 2986 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 88% | 51,706 psi | 85% | 2874 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,808 psi | 87% | 2920 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 61% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,607 psi | 90% | 2851 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,837 psi | 85% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,230 psi | 89% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,562 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,414 psi | 79% | 2946 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 54,853 psi | 90% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,156 psi | 87% | 2851 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 53,911 psi | 89% | 2913 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 53,954 psi | 89% | 2838 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,475 psi | 86% | 2812 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 53,896 psi | 88% | 2854 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,939 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,083 psi | 86% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 51,895 psi | 85% | 2762 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,461 psi | 88% | 2907 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 54,795 psi | 90% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,723 psi | 90% | 2844 fps | 96.9% |
| Somchem S365 | <<locked>> | 90% | 52,852 psi | 87% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,607 psi | 90% | 2887 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 84% | 52,460 psi | 86% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,810 psi | 90% | 2867 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,983 psi | 89% | 2864 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 53,969 psi | 89% | 2871 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,228 psi | 86% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,083 psi | 86% | 2940 fps | 96.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,547 psi | 85% | 2913 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,418 psi | 89% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,750 psi | 87% | 2887 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,417 psi | 88% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,592 psi | 90% | 2881 fps | 98.5% |
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% | 32,692 psi | 54% | 2454 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 41,263 psi | 68% | 2667 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 94% | 50,937 psi | 84% | 2923 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 49,719 psi | 82% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,366 psi | 70% | 2703 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 46,224 psi | 76% | 2808 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 36,637 psi | 60% | 2644 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,604 psi | 83% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,668 psi | 65% | 2674 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,484 psi | 75% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,465 psi | 65% | 2638 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,958 psi | 66% | 2690 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,414 psi | 48% | 2431 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,285 psi | 51% | 2497 fps | 95.3% |
| Alliant Reloder-26 | 81.7 gr | 80% | 31,647 psi | 52% | 2546 fps | 96.4% |
| Bofors RP15 | <<locked>> | 90% | 39,581 psi | 65% | 2680 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 51,169 psi | 84% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,105 psi | 69% | 2766 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 39,958 psi | 66% | 2690 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 44,657 psi | 73% | 2674 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 42,424 psi | 70% | 2723 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 51,459 psi | 84% | 2812 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,062 psi | 71% | 2710 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 45,745 psi | 75% | 2730 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 49,400 psi | 81% | 2812 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,515 psi | 80% | 2799 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,304 psi | 61% | 2562 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,552 psi | 65% | 2756 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 42,163 psi | 69% | 2726 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 45% | 1624 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,234 psi | 66% | 2602 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,050 psi | 76% | 2703 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 39,450 psi | 65% | 2615 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,066 psi | 79% | 2756 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 44,208 psi | 73% | 2782 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 43,685 psi | 72% | 2654 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 41,930 psi | 69% | 2638 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 31,981 psi | 53% | 2438 fps | 95.1% |
| Norma 204 | <<locked>> | 82% | 42,815 psi | 70% | 2690 fps | 95.8% |
| Norma MRP | 83.3 gr | 84% | 36,579 psi | 60% | 2641 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 40,770 psi | 67% | 2657 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 44,106 psi | 72% | 2789 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 39,581 psi | 65% | 2644 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 39,305 psi | 65% | 2664 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 46% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,300 psi | 84% | 2795 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,269 psi | 79% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,176 psi | 68% | 2684 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,595 psi | 65% | 2694 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,492 psi | 60% | 2674 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 48,283 psi | 79% | 2746 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,888 psi | 72% | 2684 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 86% | 41,365 psi | 68% | 2680 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 44,657 psi | 73% | 2674 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,685 psi | 72% | 2654 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 80% | 41,930 psi | 69% | 2638 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,501 psi | 81% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,950 psi | 80% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,728 psi | 70% | 2602 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,988 psi | 67% | 2674 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 48,370 psi | 79% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,979 psi | 79% | 2730 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 37,376 psi | 61% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,840 psi | 60% | 2552 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 46,195 psi | 76% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,148 psi | 69% | 2654 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 38,754 psi | 64% | 2589 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 41,626 psi | 68% | 2657 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 32,764 psi | 54% | 2507 fps | 97.8% |
| Vihtavuori N560 | 91.2 gr | 92% | 48,602 psi | 80% | 2877 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 44,933 psi | 74% | 2792 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,205 psi | 68% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,207 psi | 71% | 2713 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,034 psi | 43% | 2411 fps | 97% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,292 psi | 68% | 2648 fps | 95.6% |
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 75 powders for .338 Lapua Mag. loaded with the .338 | 210gr | Swift Scirocco. Winchester StaBALL HD delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,041 fps. ADI AR 2225 gives the best case fill at 100 %, and 75 of the 75 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 210.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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 | 210gr | Swift Scirocco 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.