Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 240gr | NorthFork Bonded Core bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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% | 53,548 psi | 88% | 2677 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 51,822 psi | 85% | 2664 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 51,866 psi | 85% | 2759 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 53,766 psi | 88% | 2635 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,547 psi | 86% | 2713 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 53,693 psi | 88% | 2766 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,773 psi | 74% | 2602 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,769 psi | 65% | 2569 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,810 psi | 90% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,562 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,534 psi | 88% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,083 psi | 86% | 2700 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,272 psi | 87% | 2762 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,244 psi | 89% | 2740 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,980 psi | 82% | 2740 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,360 psi | 89% | 2822 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,301 psi | 86% | 2743 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,963 psi | 75% | 2674 fps | 97.5% |
| Bofors RP5 | <<locked>> | 96% | 53,272 psi | 87% | 2762 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 54,882 psi | 90% | 2664 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,269 psi | 81% | 2687 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 86% | 53,519 psi | 88% | 2713 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 52,982 psi | 87% | 2671 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 53,853 psi | 88% | 2710 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,605 psi | 86% | 2690 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,953 psi | 87% | 2644 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2792 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 53,534 psi | 88% | 2746 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 60% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,707 psi | 87% | 2651 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,910 psi | 87% | 2638 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 52,199 psi | 86% | 2657 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,938 psi | 85% | 2648 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 54,955 psi | 90% | 2795 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 53,359 psi | 88% | 2638 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,810 psi | 90% | 2680 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,952 psi | 84% | 2641 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,272 psi | 87% | 2700 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 35,302 psi | 58% | 2493 fps | 96.2% |
| Norma MRP | <<locked>> | 94% | 52,924 psi | 87% | 2782 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 53,940 psi | 89% | 2700 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,721 psi | 85% | 2756 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 52,663 psi | 86% | 2703 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,577 psi | 88% | 2753 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,026 psi | 87% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,488 psi | 85% | 2684 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,374 psi | 88% | 2762 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,168 psi | 81% | 2789 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 52,489 psi | 86% | 2621 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,056 psi | 89% | 2684 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 54,882 psi | 90% | 2743 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 54,882 psi | 90% | 2664 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,359 psi | 88% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,810 psi | 90% | 2680 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,795 psi | 88% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,953 psi | 87% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,620 psi | 86% | 2592 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,433 psi | 89% | 2736 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 52,315 psi | 86% | 2615 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,040 psi | 85% | 2625 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 53,708 psi | 88% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,069 psi | 85% | 2667 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 53,388 psi | 88% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,388 psi | 86% | 2644 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,766 psi | 90% | 2694 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 54,969 psi | 90% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,069 psi | 87% | 2717 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,939 psi | 87% | 2776 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,446 psi | 86% | 2753 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,619 psi | 85% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,708 psi | 88% | 2717 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,563 psi | 90% | 2864 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,721 psi | 85% | 2657 fps | 98.8% |
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% | 31,227 psi | 51% | 2267 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 42,119 psi | 69% | 2507 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 45,063 psi | 74% | 2641 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,546 psi | 83% | 2585 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,855 psi | 62% | 2441 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 41,046 psi | 67% | 2536 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 98% | 41,945 psi | 69% | 2546 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 94% | 32,851 psi | 54% | 2395 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,503 psi | 85% | 2608 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,567 psi | 67% | 2516 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,427 psi | 76% | 2628 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,768 psi | 62% | 2438 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,679 psi | 59% | 2431 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,066 psi | 49% | 2297 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,108 psi | 46% | 2257 fps | 95% |
| Alliant Reloder-26 | 75.2 gr | 80% | 32,445 psi | 53% | 2415 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 37,826 psi | 62% | 2477 fps | 95.6% |
| Bofors RP30 | <<locked>> | 96% | 40,190 psi | 66% | 2559 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 35,679 psi | 59% | 2431 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 45,397 psi | 75% | 2513 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 94% | 40,234 psi | 66% | 2516 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,845 psi | 72% | 2552 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,659 psi | 77% | 2569 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 43,874 psi | 72% | 2543 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,047 psi | 71% | 2526 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,145 psi | 63% | 2408 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,433 psi | 58% | 2493 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 42,931 psi | 70% | 2569 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 45% | 1496 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,930 psi | 67% | 2448 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,833 psi | 77% | 2539 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 40,350 psi | 66% | 2461 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,902 psi | 70% | 2487 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 90% | 42,090 psi | 69% | 2569 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 44,382 psi | 73% | 2493 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,612 psi | 70% | 2480 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 30,632 psi | 50% | 2254 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 40,669 psi | 67% | 2480 fps | 96.3% |
| Norma 217 | <<locked>> | 98% | 32,982 psi | 54% | 2434 fps | 95% |
| Norma MRP | 72.9 gr | 80% | 32,416 psi | 53% | 2379 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,481 psi | 68% | 2497 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 41,829 psi | 69% | 2575 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 40,379 psi | 66% | 2493 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 34,708 psi | 57% | 2405 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 46% | 1529 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,269 psi | 81% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,047 psi | 69% | 2530 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,364 psi | 66% | 2539 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,563 psi | 57% | 2474 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,066 psi | 81% | 2572 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,930 psi | 69% | 2477 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 36,883 psi | 61% | 2421 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,397 psi | 75% | 2513 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,382 psi | 73% | 2493 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,612 psi | 70% | 2480 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,386 psi | 83% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,719 psi | 82% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,497 psi | 71% | 2444 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,550 psi | 60% | 2415 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 49,168 psi | 81% | 2569 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,629 psi | 75% | 2520 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 38,232 psi | 63% | 2457 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,172 psi | 58% | 2356 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,920 psi | 77% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,989 psi | 71% | 2493 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 34,635 psi | 57% | 2339 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 42,337 psi | 70% | 2497 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 33,547 psi | 55% | 2365 fps | 98.9% |
| Vihtavuori N560 | 80.2 gr | 88% | 43,091 psi | 71% | 2602 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 94% | 42,772 psi | 70% | 2585 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,858 psi | 69% | 2461 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,005 psi | 72% | 2556 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,614 psi | 44% | 2297 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,695 psi | 60% | 2388 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 | 240gr | NorthFork Bonded Core. Winchester StaBALL HD delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,864 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 58–90 %, leaving at least 10 % headroom. The 240.0 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .338 Lapua Mag. with the .338 | 240gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N570 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.