Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 252gr | CutEdge MTH 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% | 55,085 psi | 90% | 2648 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,113 psi | 87% | 2631 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,838 psi | 88% | 2740 fps | 98% |
| ADI AR 2208 | <<locked>> | 82% | 54,911 psi | 90% | 2595 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,085 psi | 89% | 2687 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 51,706 psi | 85% | 2687 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 2589 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,843 psi | 67% | 2549 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,273 psi | 89% | 2684 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,590 psi | 85% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,722 psi | 88% | 2677 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,114 psi | 90% | 2736 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,460 psi | 86% | 2657 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,692 psi | 85% | 2710 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,373 psi | 86% | 2736 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,056 psi | 89% | 2654 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 54,070 psi | 89% | 2720 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,616 psi | 78% | 2654 fps | 98.4% |
| Bofors RP5 | <<locked>> | 96% | 55,114 psi | 90% | 2736 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 52,547 psi | 86% | 2582 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,981 psi | 84% | 2671 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 86% | 54,998 psi | 90% | 2684 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,418 psi | 89% | 2644 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 51,866 psi | 85% | 2631 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,317 psi | 89% | 2667 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,476 psi | 89% | 2612 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,705 psi | 83% | 2776 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 51,343 psi | 84% | 2661 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1640 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,070 psi | 89% | 2621 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,172 psi | 89% | 2608 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,563 psi | 88% | 2625 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,185 psi | 87% | 2618 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 53,229 psi | 87% | 2720 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 54,505 psi | 89% | 2605 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,562 psi | 86% | 2598 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,344 psi | 86% | 2612 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,955 psi | 90% | 2674 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 36,303 psi | 60% | 2477 fps | 97.4% |
| Norma MRP | <<locked>> | 94% | 54,839 psi | 90% | 2756 fps | 100% |
| Norma URP | <<locked>> | 86% | 51,822 psi | 85% | 2615 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,592 psi | 88% | 2736 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 54,331 psi | 89% | 2674 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,561 psi | 85% | 2674 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 62% | 1677 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,911 psi | 90% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,113 psi | 87% | 2654 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,416 psi | 84% | 2680 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,981 psi | 84% | 2769 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,818 psi | 75% | 2657 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 82% | 53,476 psi | 88% | 2582 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,112 psi | 86% | 2608 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 52,910 psi | 87% | 2661 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 52,547 psi | 86% | 2582 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,505 psi | 89% | 2605 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,562 psi | 86% | 2598 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,998 psi | 89% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,751 psi | 88% | 2562 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,475 psi | 86% | 2657 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 53,316 psi | 88% | 2575 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,417 psi | 88% | 2602 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 51,909 psi | 85% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,345 psi | 88% | 2638 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,650 psi | 90% | 2552 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,780 psi | 88% | 2612 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,011 psi | 87% | 2621 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 52,794 psi | 87% | 2615 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,781 psi | 90% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,853 psi | 90% | 2753 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,201 psi | 89% | 2730 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,210 psi | 78% | 2664 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,055 psi | 87% | 2572 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,677 psi | 85% | 2635 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,272 psi | 87% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,330 psi | 88% | 2635 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% | 31,763 psi | 52% | 2241 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 43,120 psi | 71% | 2477 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 43,308 psi | 71% | 2562 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,634 psi | 85% | 2549 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,201 psi | 59% | 2362 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 39,436 psi | 65% | 2461 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 40,408 psi | 66% | 2477 fps | 96% |
| ADI AR 2225 | <<locked>> | 92% | 31,444 psi | 52% | 2323 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,597 psi | 68% | 2487 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,935 psi | 79% | 2595 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,172 psi | 59% | 2359 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,127 psi | 56% | 2352 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,603 psi | 50% | 2270 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 26,731 psi | 44% | 2178 fps | 95.1% |
| Alliant Reloder-26 | 76 gr | 80% | 33,257 psi | 55% | 2392 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,734 psi | 83% | 2602 fps | 95.4% |
| Bofors RP15 | <<locked>> | 86% | 36,274 psi | 60% | 2398 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 36,230 psi | 59% | 2431 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 34,127 psi | 56% | 2352 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,224 psi | 76% | 2480 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 36,158 psi | 59% | 2385 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 45,005 psi | 74% | 2523 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 47,718 psi | 78% | 2539 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 42,206 psi | 69% | 2467 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,394 psi | 68% | 2451 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,030 psi | 64% | 2375 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,895 psi | 56% | 2418 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 44,237 psi | 73% | 2546 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 45% | 1463 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,930 psi | 69% | 2425 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,805 psi | 78% | 2510 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,162 psi | 68% | 2431 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,278 psi | 68% | 2415 fps | 95.5% |
| IMR 7828 SSC | 78.1 gr | 88% | 40,524 psi | 67% | 2493 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 45,165 psi | 74% | 2461 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,482 psi | 71% | 2451 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 29,080 psi | 48% | 2175 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 41,742 psi | 69% | 2457 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 31,705 psi | 52% | 2362 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 33,185 psi | 54% | 2359 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 42,554 psi | 70% | 2467 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 37,289 psi | 61% | 2438 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 41,452 psi | 68% | 2464 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 33,069 psi | 54% | 2326 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 46% | 1503 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,937 psi | 84% | 2635 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,975 psi | 71% | 2497 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,495 psi | 68% | 2513 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,705 psi | 50% | 2329 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,496 psi | 70% | 2592 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 50,169 psi | 82% | 2536 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,147 psi | 66% | 2398 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 35,273 psi | 58% | 2343 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 46,224 psi | 76% | 2480 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,165 psi | 74% | 2461 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,482 psi | 71% | 2451 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,691 psi | 83% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,164 psi | 73% | 2411 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,954 psi | 57% | 2336 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 50,096 psi | 82% | 2533 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 40,683 psi | 67% | 2385 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 39,392 psi | 65% | 2428 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,781 psi | 59% | 2326 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,993 psi | 79% | 2464 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,092 psi | 72% | 2464 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,083 psi | 54% | 2264 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,352 psi | 71% | 2467 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,345 psi | 56% | 2339 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 86% | 41,539 psi | 68% | 2523 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 92% | 41,162 psi | 68% | 2510 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 98% | 44,034 psi | 72% | 2605 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,975 psi | 71% | 2428 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,179 psi | 74% | 2526 fps | 99.3% |
| Winchester StaBALL HD | 73 gr | 80% | 27,021 psi | 44% | 2274 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,056 psi | 58% | 2313 fps | 95.4% |
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 | 252gr | CutEdge MTH. Winchester StaBALL HD delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,782 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 60–90 %, leaving at least 10 % headroom. The 252.0 gr projectile in 0.338" calls for a 1:10.5 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 | 252gr | CutEdge MTH 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.