Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 250gr | Barnes Banded Solid bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and ReloadSwiss RS 76.
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>> | 92% | 53,258 psi | 87% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,592 psi | 90% | 2667 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 51,779 psi | 85% | 2726 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 88% | 51,692 psi | 85% | 2671 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 92% | 53,069 psi | 87% | 2730 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,952 psi | 84% | 2694 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,484 psi | 75% | 2657 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,011 psi | 85% | 2671 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,723 psi | 90% | 2713 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,200 psi | 87% | 2726 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,476 psi | 89% | 2700 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,751 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,665 psi | 90% | 2782 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,752 psi | 90% | 2694 fps | 96.8% |
| Bofors RP15 | <<locked>> | 94% | 52,431 psi | 86% | 2713 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,432 psi | 88% | 2759 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 53,200 psi | 87% | 2726 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 53,142 psi | 87% | 2615 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 52,402 psi | 86% | 2720 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 82% | 52,518 psi | 86% | 2664 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,998 psi | 90% | 2677 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 52,881 psi | 87% | 2671 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 51,924 psi | 85% | 2654 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,257 psi | 86% | 2598 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 52,649 psi | 86% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 52,576 psi | 86% | 2697 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,260 psi | 61% | 1677 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,810 psi | 90% | 2657 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,679 psi | 90% | 2638 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,824 psi | 90% | 2661 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,027 psi | 89% | 2657 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 54,621 psi | 90% | 2766 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,133 psi | 68% | 2569 fps | 96.9% |
| Lovex S065 | <<locked>> | 82% | 52,040 psi | 85% | 2589 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,563 psi | 88% | 2635 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,563 psi | 90% | 2661 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,170 psi | 86% | 2657 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 41,263 psi | 68% | 2595 fps | 98.9% |
| Norma MRP | <<locked>> | 90% | 53,026 psi | 87% | 2746 fps | 100% |
| Norma URP | <<locked>> | 84% | 53,011 psi | 87% | 2651 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 51,547 psi | 85% | 2726 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 84% | 51,909 psi | 85% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,693 psi | 88% | 2723 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 63% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,563 psi | 90% | 2690 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,837 psi | 87% | 2717 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,200 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,938 psi | 85% | 2776 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 88% | 52,939 psi | 87% | 2644 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 90% | 54,346 psi | 89% | 2703 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 53,142 psi | 87% | 2615 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,040 psi | 85% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,563 psi | 88% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,346 psi | 89% | 2592 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 53,954 psi | 89% | 2700 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 54,259 psi | 89% | 2638 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 53,490 psi | 88% | 2654 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,882 psi | 90% | 2677 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 84% | 54,752 psi | 90% | 2644 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,346 psi | 89% | 2661 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 53,882 psi | 88% | 2648 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 53,272 psi | 87% | 2677 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 52,866 psi | 87% | 2740 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 52,779 psi | 87% | 2726 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,040 psi | 87% | 2776 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,954 psi | 89% | 2602 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 52,692 psi | 87% | 2667 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 52,127 psi | 86% | 2776 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,578 psi | 90% | 2674 fps | 99.6% |
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% | 35,694 psi | 59% | 2339 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 47,674 psi | 78% | 2566 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 41,989 psi | 69% | 2549 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 39,653 psi | 65% | 2454 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 82% | 37,811 psi | 62% | 2441 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 92% | 39,030 psi | 64% | 2467 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 88% | 30,879 psi | 51% | 2323 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,571 psi | 75% | 2569 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,711 psi | 65% | 2448 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,520 psi | 58% | 2395 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,200 psi | 56% | 2359 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,791 psi | 49% | 2283 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,652 psi | 62% | 2497 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,370 psi | 79% | 2589 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 35,346 psi | 58% | 2392 fps | 95.7% |
| Bofors RP30 | <<locked>> | 88% | 35,621 psi | 58% | 2428 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 35,520 psi | 58% | 2395 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 50,038 psi | 82% | 2566 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 37,347 psi | 61% | 2434 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 49,226 psi | 81% | 2615 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 51,605 psi | 85% | 2625 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 40,350 psi | 66% | 2448 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,653 psi | 65% | 2434 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,004 psi | 71% | 2461 fps | 100% |
| Hodgdon Retumbo | 79.9 gr | 84% | 33,127 psi | 54% | 2411 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 48,863 psi | 80% | 2638 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 46% | 1496 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,469 psi | 75% | 2507 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,372 psi | 84% | 2589 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,237 psi | 74% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,494 psi | 65% | 2398 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 38,957 psi | 64% | 2480 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,056 psi | 59% | 2457 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 48,878 psi | 80% | 2539 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,326 psi | 78% | 2536 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 30,792 psi | 51% | 2224 fps | 96.8% |
| Norma 204 | <<locked>> | 80% | 45,629 psi | 75% | 2546 fps | 98.4% |
| Norma 217 | <<locked>> | 92% | 31,560 psi | 52% | 2369 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 37,217 psi | 61% | 2461 fps | 97.9% |
| Norma URP | <<locked>> | 80% | 46,644 psi | 77% | 2552 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,042 psi | 59% | 2428 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 45,498 psi | 75% | 2552 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 32,111 psi | 53% | 2316 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,558 psi | 47% | 1535 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,543 psi | 78% | 2585 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,658 psi | 75% | 2605 fps | 100% |
| ReloadSwiss RS 76 | 83.5 gr | 82% | 30,023 psi | 49% | 2323 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,568 psi | 68% | 2589 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 40,959 psi | 67% | 2434 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 39,030 psi | 64% | 2434 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 80% | 50,038 psi | 82% | 2566 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,878 psi | 80% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,326 psi | 78% | 2536 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,921 psi | 79% | 2497 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,711 psi | 64% | 2431 fps | 97.1% |
| Somchem S361 | <<locked>> | 80% | 41,626 psi | 68% | 2425 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 43,787 psi | 72% | 2513 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,581 psi | 65% | 2421 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 80% | 48,037 psi | 79% | 2546 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,345 psi | 56% | 2303 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,297 psi | 78% | 2549 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,435 psi | 63% | 2431 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,118 psi | 66% | 2510 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 86% | 37,652 psi | 62% | 2448 fps | 95% |
| Vihtavuori N568 | <<locked>> | 94% | 42,975 psi | 71% | 2602 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,007 psi | 77% | 2507 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,226 psi | 81% | 2615 fps | 99.8% |
| Winchester StaBALL HD | 78.2 gr | 80% | 30,516 psi | 50% | 2388 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,143 psi | 59% | 2349 fps | 96.1% |
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 74 powders for .338 Lapua Mag. loaded with the .338 | 250gr | Barnes Banded Solid. Hodgdon Retumbo delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,825 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 250.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for .338 Lapua Mag. with the .338 | 250gr | Barnes Banded Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-33, IMR 7977 Enduron 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.