Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 200gr | Barnes X S bullet and 70 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% | 52,808 psi | 87% | 2897 fps | 99.6% |
| Accurate 4350 | <<locked>> | 86% | 54,070 psi | 89% | 2940 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,896 psi | 88% | 3022 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 82% | 54,940 psi | 90% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,809 psi | 88% | 2969 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 94% | 51,866 psi | 85% | 2963 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,829 psi | 69% | 2812 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,838 psi | 88% | 2986 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,401 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,563 psi | 88% | 2959 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 51,808 psi | 85% | 2969 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,634 psi | 86% | 2959 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,953 psi | 85% | 3005 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,475 psi | 86% | 3038 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,143 psi | 89% | 3009 fps | 98.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,095 psi | 79% | 2930 fps | 96.5% |
| Bofors RP5 | <<locked>> | 94% | 51,808 psi | 85% | 2969 fps | 98% |
| Bofors RP7 | <<locked>> | 84% | 53,229 psi | 87% | 2877 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,082 psi | 84% | 2936 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 84% | 51,808 psi | 85% | 2923 fps | 99% |
| Hodgdon H4350 | <<locked>> | 84% | 54,433 psi | 89% | 2933 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 92% | 51,880 psi | 85% | 2904 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,288 psi | 89% | 2946 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,447 psi | 89% | 2910 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,836 psi | 83% | 3051 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 84% | 51,401 psi | 84% | 2946 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 61% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,114 psi | 89% | 2910 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,230 psi | 89% | 2897 fps | 99.2% |
| IMR 4831 | <<locked>> | 88% | 54,143 psi | 89% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,185 psi | 87% | 2894 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 96% | 52,982 psi | 87% | 2995 fps | 97% |
| Lovex S065 | <<locked>> | 84% | 52,069 psi | 85% | 2854 fps | 99.6% |
| Lovex S070 | <<locked>> | 86% | 53,403 psi | 88% | 2894 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,635 psi | 88% | 2910 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 54,723 psi | 90% | 2959 fps | 98.2% |
| Norma MRP | <<locked>> | 94% | 54,824 psi | 90% | 3051 fps | 99.4% |
| Norma URP | <<locked>> | 86% | 52,272 psi | 86% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,461 psi | 88% | 3012 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 88% | 54,230 psi | 89% | 2966 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 98% | 51,822 psi | 85% | 2949 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,913 psi | 62% | 1913 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,331 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,563 psi | 88% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,940 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,459 psi | 84% | 3051 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 82% | 54,636 psi | 90% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,199 psi | 86% | 2884 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 92% | 53,272 psi | 87% | 2953 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 84% | 53,229 psi | 87% | 2877 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,069 psi | 85% | 2854 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 86% | 53,403 psi | 88% | 2894 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,201 psi | 89% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,520 psi | 90% | 2851 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,823 psi | 87% | 2946 fps | 98.1% |
| Somchem S355 | <<locked>> | 82% | 54,143 psi | 89% | 2887 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,737 psi | 88% | 2877 fps | 96.3% |
| Somchem S365 | <<locked>> | 88% | 52,185 psi | 86% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,041 psi | 89% | 2927 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 51,924 psi | 85% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,882 psi | 88% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,185 psi | 87% | 2900 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 86% | 53,330 psi | 88% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,185 psi | 86% | 2940 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,694 psi | 90% | 3038 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,694 psi | 90% | 3015 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,156 psi | 87% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,982 psi | 85% | 2923 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,359 psi | 86% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,650 psi | 88% | 2917 fps | 98.1% |
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% | 33,997 psi | 56% | 2520 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 44,599 psi | 73% | 2776 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 50,444 psi | 83% | 2959 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,750 psi | 85% | 2844 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,916 psi | 69% | 2736 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 48,617 psi | 80% | 2900 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 96% | 37,115 psi | 61% | 2694 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,090 psi | 69% | 2769 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,095 psi | 79% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,945 psi | 69% | 2736 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 42,757 psi | 70% | 2792 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,097 psi | 53% | 2539 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,966 psi | 52% | 2549 fps | 95.1% |
| Alliant Reloder-26 | 83.4 gr | 80% | 34,693 psi | 57% | 2667 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 42,177 psi | 69% | 2779 fps | 95.4% |
| Bofors RP30 | <<locked>> | 98% | 45,092 psi | 74% | 2871 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 42,757 psi | 70% | 2792 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,239 psi | 78% | 2769 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 44,933 psi | 74% | 2818 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,585 psi | 75% | 2808 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 47,993 psi | 79% | 2818 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 90% | 48,602 psi | 80% | 2844 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 50,879 psi | 84% | 2887 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,030 psi | 66% | 2661 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,697 psi | 65% | 2799 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,643 psi | 73% | 2822 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,833 psi | 46% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,583 psi | 70% | 2694 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,167 psi | 79% | 2789 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 42,380 psi | 70% | 2717 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,140 psi | 82% | 2838 fps | 95.7% |
| IMR 7828 SSC | 89.6 gr | 92% | 46,673 psi | 77% | 2874 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 46,282 psi | 76% | 2749 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 44,570 psi | 73% | 2733 fps | 97.9% |
| Lovex S071 | <<locked>> | 84% | 33,330 psi | 55% | 2503 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 42,250 psi | 69% | 2723 fps | 95.2% |
| Norma MRP | <<locked>> | 82% | 36,898 psi | 61% | 2687 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 43,323 psi | 71% | 2753 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 46,702 psi | 77% | 2887 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,076 psi | 69% | 2740 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 39,349 psi | 65% | 2703 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 47% | 1716 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,850 psi | 83% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,019 psi | 72% | 2785 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,134 psi | 69% | 2792 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,782 psi | 60% | 2717 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 51,256 psi | 84% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,108 psi | 76% | 2772 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 41,394 psi | 68% | 2723 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,239 psi | 78% | 2769 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,282 psi | 76% | 2749 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 44,570 psi | 73% | 2733 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,140 psi | 84% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,397 psi | 75% | 2694 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 41,017 psi | 67% | 2717 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 51,082 psi | 84% | 2835 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 50,386 psi | 83% | 2818 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 40,335 psi | 66% | 2720 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 39,711 psi | 65% | 2657 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,718 psi | 80% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,701 psi | 73% | 2749 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 38,914 psi | 64% | 2631 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,367 psi | 73% | 2753 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 36,056 psi | 59% | 2625 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 90% | 48,022 psi | 79% | 2913 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 48,066 psi | 79% | 2897 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,569 psi | 72% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,745 psi | 75% | 2812 fps | 98% |
| Winchester StaBALL HD | 80.1 gr | 80% | 28,892 psi | 47% | 2543 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 41,133 psi | 68% | 2684 fps | 95% |
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 70 powders for .338 Lapua Mag. loaded with the .338 | 200gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,084 fps. ADI AR 2225 gives the best case fill at 100 %, and 70 of the 70 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 200.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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 | 200gr | Barnes X S 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.