Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 250gr | Lehigh Defense Controlled Fracturing bullet and 75 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>> | 96% | 55,013 psi | 90% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,953 psi | 87% | 2638 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,766 psi | 88% | 2749 fps | 98% |
| ADI AR 2208 | <<locked>> | 82% | 54,839 psi | 90% | 2605 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,056 psi | 89% | 2694 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 51,866 psi | 85% | 2700 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,151 psi | 76% | 2598 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,944 psi | 67% | 2562 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,331 psi | 89% | 2697 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,416 psi | 84% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,693 psi | 88% | 2687 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,056 psi | 90% | 2746 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,634 psi | 86% | 2671 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,822 psi | 85% | 2726 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,475 psi | 86% | 2749 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,143 psi | 89% | 2664 fps | 96.1% |
| Bofors RP15 | <<locked>> | 98% | 54,186 psi | 89% | 2733 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,718 psi | 78% | 2664 fps | 98.3% |
| Bofors RP5 | <<locked>> | 96% | 55,056 psi | 90% | 2746 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 52,634 psi | 86% | 2595 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,894 psi | 84% | 2680 fps | 99% |
| Hodgdon H414 | <<locked>> | 86% | 55,013 psi | 90% | 2694 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,433 psi | 89% | 2657 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 51,866 psi | 85% | 2641 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,433 psi | 89% | 2680 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,520 psi | 90% | 2621 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,792 psi | 83% | 2785 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 51,547 psi | 85% | 2674 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 60% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,099 psi | 89% | 2635 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,259 psi | 89% | 2618 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,606 psi | 88% | 2635 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,156 psi | 87% | 2628 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 53,156 psi | 87% | 2730 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 54,578 psi | 90% | 2615 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,605 psi | 86% | 2612 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,330 psi | 86% | 2621 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,940 psi | 90% | 2684 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 36,216 psi | 59% | 2480 fps | 97.2% |
| Norma MRP | <<locked>> | 94% | 54,984 psi | 90% | 2769 fps | 100% |
| Norma URP | <<locked>> | 86% | 51,880 psi | 85% | 2628 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,693 psi | 88% | 2749 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 54,317 psi | 89% | 2684 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,590 psi | 85% | 2684 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1686 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,752 psi | 90% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,098 psi | 87% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,401 psi | 84% | 2690 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,995 psi | 84% | 2779 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,832 psi | 75% | 2664 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 82% | 53,548 psi | 88% | 2592 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,127 psi | 86% | 2618 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 52,910 psi | 87% | 2671 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 52,634 psi | 86% | 2595 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,578 psi | 90% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,605 psi | 86% | 2612 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,925 psi | 89% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,795 psi | 88% | 2572 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,475 psi | 86% | 2667 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 53,403 psi | 88% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,330 psi | 88% | 2612 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 51,909 psi | 85% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,534 psi | 88% | 2651 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,549 psi | 90% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,635 psi | 88% | 2618 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,939 psi | 87% | 2631 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 52,823 psi | 87% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,737 psi | 90% | 2694 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,955 psi | 90% | 2766 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,244 psi | 89% | 2740 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2674 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,214 psi | 87% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,692 psi | 85% | 2644 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,185 psi | 87% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,476 psi | 88% | 2648 fps | 99.4% |
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% | 31,676 psi | 52% | 2247 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 43,033 psi | 71% | 2487 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 43,308 psi | 71% | 2572 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 51,561 psi | 85% | 2559 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,158 psi | 59% | 2369 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 39,465 psi | 65% | 2467 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 40,350 psi | 66% | 2484 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 92% | 31,459 psi | 52% | 2333 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,553 psi | 68% | 2493 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,964 psi | 79% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,114 psi | 59% | 2365 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,171 psi | 56% | 2362 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,676 psi | 50% | 2280 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,529 psi | 47% | 2241 fps | 96.1% |
| Alliant Reloder-26 | 76.4 gr | 80% | 33,141 psi | 54% | 2398 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,807 psi | 83% | 2612 fps | 95.3% |
| Bofors RP15 | <<locked>> | 86% | 36,289 psi | 60% | 2411 fps | 95.7% |
| Bofors RP30 | <<locked>> | 92% | 36,201 psi | 59% | 2441 fps | 95% |
| Bofors RP5 | <<locked>> | 82% | 34,171 psi | 56% | 2362 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,325 psi | 76% | 2493 fps | 99% |
| Hodgdon H1000 | <<locked>> | 92% | 38,696 psi | 64% | 2454 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 45,078 psi | 74% | 2536 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 47,790 psi | 78% | 2549 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 42,235 psi | 69% | 2477 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,423 psi | 68% | 2461 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,146 psi | 64% | 2388 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,895 psi | 56% | 2425 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 44,251 psi | 73% | 2556 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 45% | 1473 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,872 psi | 69% | 2431 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,877 psi | 79% | 2520 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,075 psi | 67% | 2438 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,336 psi | 68% | 2425 fps | 95.5% |
| IMR 7828 SSC | 78.6 gr | 88% | 40,538 psi | 67% | 2503 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 45,266 psi | 74% | 2470 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,410 psi | 71% | 2461 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 29,037 psi | 48% | 2182 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 41,640 psi | 68% | 2464 fps | 97.2% |
| Norma 217 | <<locked>> | 96% | 31,691 psi | 52% | 2369 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 33,214 psi | 55% | 2369 fps | 96.2% |
| Norma URP | <<locked>> | 80% | 42,511 psi | 70% | 2477 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 37,304 psi | 61% | 2448 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 41,379 psi | 68% | 2474 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 33,054 psi | 54% | 2336 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 46% | 1506 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,024 psi | 84% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,047 psi | 71% | 2507 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,379 psi | 68% | 2520 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,806 psi | 51% | 2339 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,540 psi | 70% | 2602 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 50,082 psi | 82% | 2546 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,074 psi | 66% | 2405 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 35,360 psi | 58% | 2352 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,325 psi | 76% | 2493 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,266 psi | 74% | 2470 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,410 psi | 71% | 2461 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,647 psi | 83% | 2438 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,237 psi | 73% | 2425 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,041 psi | 58% | 2346 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,198 psi | 82% | 2543 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 40,712 psi | 67% | 2395 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,291 psi | 65% | 2434 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,853 psi | 59% | 2336 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,921 psi | 79% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,990 psi | 72% | 2474 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,127 psi | 54% | 2270 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 43,236 psi | 71% | 2477 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,272 psi | 56% | 2346 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 86% | 41,539 psi | 68% | 2533 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 92% | 41,118 psi | 68% | 2516 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 98% | 44,106 psi | 72% | 2618 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,018 psi | 71% | 2438 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,078 psi | 74% | 2536 fps | 99.2% |
| Winchester StaBALL HD | 73.4 gr | 80% | 26,963 psi | 44% | 2280 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 82% | 34,969 psi | 57% | 2320 fps | 95.2% |
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 80 powders for .338 Lapua Mag. loaded with the .338 | 250gr | Lehigh Defense Controlled Fracturing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,792 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,792 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:11.0 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. Alliant Reloder-26, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .338 Lapua Mag. with the .338 | 250gr | Lehigh Defense Controlled Fracturing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, IMR 8133 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.