Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 250gr | Barnes Banded Solid RN bullet and 70 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% | 52,562 psi | 86% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,940 psi | 89% | 2657 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,839 psi | 90% | 2772 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 90% | 54,563 psi | 90% | 2710 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 92% | 52,359 psi | 86% | 2717 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,198 psi | 82% | 2677 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,802 psi | 74% | 2644 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,737 psi | 90% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,230 psi | 89% | 2703 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 52,518 psi | 86% | 2713 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,722 psi | 88% | 2687 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,084 psi | 87% | 2746 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,911 psi | 89% | 2769 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,128 psi | 89% | 2680 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 55,114 psi | 90% | 2753 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,562 psi | 86% | 2743 fps | 99.2% |
| Bofors RP5 | <<locked>> | 92% | 52,518 psi | 86% | 2713 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 52,794 psi | 87% | 2608 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 51,808 psi | 85% | 2707 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 82% | 51,953 psi | 85% | 2654 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 54,433 psi | 89% | 2664 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 52,214 psi | 86% | 2657 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,839 psi | 90% | 2697 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,042 psi | 90% | 2635 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 52,040 psi | 85% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 51,851 psi | 85% | 2684 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 61% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,273 psi | 89% | 2644 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,143 psi | 89% | 2628 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,244 psi | 89% | 2648 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 53,432 psi | 88% | 2644 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 53,954 psi | 89% | 2749 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,422 psi | 66% | 2552 fps | 96.6% |
| Lovex S065 | <<locked>> | 84% | 54,853 psi | 90% | 2628 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,011 psi | 87% | 2625 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 53,867 psi | 88% | 2648 fps | 100% |
| Norma 204 | <<locked>> | 84% | 51,503 psi | 85% | 2641 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 40,509 psi | 67% | 2575 fps | 98.7% |
| Norma MRP | <<locked>> | 90% | 52,141 psi | 86% | 2730 fps | 100% |
| Norma URP | <<locked>> | 84% | 52,417 psi | 86% | 2641 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,607 psi | 90% | 2769 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 54,795 psi | 90% | 2697 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,852 psi | 87% | 2707 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,014 psi | 62% | 1709 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,824 psi | 88% | 2677 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,054 psi | 85% | 2703 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 52,228 psi | 86% | 2805 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,227 psi | 84% | 2762 fps | 98% |
| Rottweil R 904 | <<locked>> | 88% | 52,257 psi | 86% | 2631 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 53,621 psi | 88% | 2690 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 82% | 52,794 psi | 87% | 2608 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,853 psi | 90% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,011 psi | 87% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,824 psi | 88% | 2582 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 53,200 psi | 87% | 2687 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 53,679 psi | 88% | 2625 fps | 98.4% |
| Somchem S365 | <<locked>> | 86% | 52,808 psi | 87% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,201 psi | 89% | 2667 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,897 psi | 90% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,143 psi | 89% | 2635 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,664 psi | 88% | 2648 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 53,345 psi | 88% | 2638 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 52,475 psi | 86% | 2664 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 51,996 psi | 85% | 2726 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 96% | 51,924 psi | 85% | 2710 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,286 psi | 86% | 2766 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,287 psi | 87% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 52,127 psi | 86% | 2657 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 51,329 psi | 84% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,896 psi | 88% | 2661 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% | 35,172 psi | 58% | 2323 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 47,050 psi | 77% | 2556 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 41,336 psi | 68% | 2536 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 39,160 psi | 64% | 2441 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 39,958 psi | 66% | 2487 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 92% | 38,508 psi | 63% | 2454 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 88% | 30,429 psi | 50% | 2306 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,107 psi | 74% | 2562 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,204 psi | 64% | 2438 fps | 97% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,012 psi | 57% | 2382 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,808 psi | 56% | 2349 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,370 psi | 48% | 2267 fps | 96.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,956 psi | 61% | 2480 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,850 psi | 83% | 2625 fps | 95.8% |
| Bofors RP15 | <<locked>> | 82% | 34,940 psi | 57% | 2379 fps | 95.5% |
| Bofors RP30 | <<locked>> | 90% | 37,536 psi | 62% | 2470 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 35,012 psi | 57% | 2382 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 49,487 psi | 81% | 2556 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 36,840 psi | 60% | 2418 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 48,646 psi | 80% | 2602 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,053 psi | 84% | 2615 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 39,871 psi | 65% | 2438 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,916 psi | 69% | 2477 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,540 psi | 70% | 2451 fps | 100% |
| Hodgdon Retumbo | 79 gr | 84% | 32,721 psi | 54% | 2398 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 48,298 psi | 79% | 2628 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 46% | 1493 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,933 psi | 74% | 2493 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,807 psi | 83% | 2575 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,672 psi | 73% | 2503 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,044 psi | 64% | 2385 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 84% | 38,479 psi | 63% | 2467 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,898 psi | 62% | 2497 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 48,443 psi | 80% | 2533 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,775 psi | 77% | 2526 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,414 psi | 50% | 2215 fps | 96.6% |
| Norma 204 | <<locked>> | 80% | 45,092 psi | 74% | 2533 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 31,082 psi | 51% | 2352 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 36,709 psi | 60% | 2448 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 46,050 psi | 76% | 2543 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,116 psi | 63% | 2470 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 44,962 psi | 74% | 2543 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 31,589 psi | 52% | 2303 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 47% | 1529 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,963 psi | 77% | 2575 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,107 psi | 74% | 2592 fps | 100% |
| ReloadSwiss RS 76 | 84.5 gr | 84% | 31,676 psi | 52% | 2372 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 40,901 psi | 67% | 2572 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 40,567 psi | 67% | 2421 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 38,653 psi | 63% | 2425 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 49,487 psi | 81% | 2556 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,443 psi | 80% | 2533 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,775 psi | 77% | 2526 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,427 psi | 78% | 2484 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,319 psi | 63% | 2421 fps | 96.9% |
| Somchem S361 | <<locked>> | 80% | 41,162 psi | 68% | 2411 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 43,134 psi | 71% | 2500 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,102 psi | 64% | 2408 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 51,430 psi | 84% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,471 psi | 78% | 2536 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,895 psi | 56% | 2290 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 46,731 psi | 77% | 2539 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,971 psi | 62% | 2421 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 39,450 psi | 65% | 2493 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 88% | 39,624 psi | 65% | 2487 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 42,279 psi | 69% | 2585 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,485 psi | 76% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,820 psi | 80% | 2605 fps | 99.8% |
| Winchester StaBALL HD | 77.3 gr | 80% | 30,066 psi | 49% | 2375 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,679 psi | 59% | 2336 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 70 powders for .338 Lapua Mag. loaded with the .338 | 250gr | Barnes Banded Solid RN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,815 fps. ADI AR 2217 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 250.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Hodgdon Retumbo, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for .338 Lapua Mag. with the .338 | 250gr | Barnes Banded Solid RN 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.