Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 250gr | Berger Hybrid OTM Tactical bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Ramshot Grand.
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% | 51,619 psi | 85% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,069 psi | 87% | 2644 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 52,997 psi | 87% | 2753 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 53,809 psi | 88% | 2756 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 53,635 psi | 88% | 2694 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,042 psi | 90% | 2756 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,342 psi | 81% | 2661 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,990 psi | 72% | 2625 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 53,983 psi | 89% | 2694 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,853 psi | 88% | 2694 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,839 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,345 psi | 88% | 2687 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,085 psi | 90% | 2753 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 52,779 psi | 87% | 2674 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 52,054 psi | 85% | 2730 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,721 psi | 87% | 2753 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,432 psi | 88% | 2664 fps | 96.3% |
| Bofors RP15 | <<locked>> | 96% | 54,027 psi | 89% | 2736 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,547 psi | 85% | 2726 fps | 99.1% |
| Bofors RP5 | <<locked>> | 94% | 55,085 psi | 90% | 2753 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 52,011 psi | 85% | 2592 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,418 psi | 89% | 2743 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 54,650 psi | 90% | 2694 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 53,664 psi | 88% | 2651 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 54,998 psi | 90% | 2697 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,824 psi | 88% | 2677 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,201 psi | 89% | 2621 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,462 psi | 89% | 2851 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,940 psi | 90% | 2726 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 61% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,577 psi | 88% | 2631 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,374 psi | 88% | 2615 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 53,461 psi | 88% | 2638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,634 psi | 86% | 2628 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 94% | 52,881 psi | 87% | 2733 fps | 98.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,552 psi | 65% | 2533 fps | 96.3% |
| Lovex S065 | <<locked>> | 84% | 54,099 psi | 89% | 2615 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,272 psi | 86% | 2612 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 52,794 psi | 87% | 2631 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,302 psi | 89% | 2684 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,639 psi | 65% | 2559 fps | 98.5% |
| Norma MRP | <<locked>> | 92% | 54,882 psi | 90% | 2769 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,969 psi | 90% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,519 psi | 88% | 2753 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 53,911 psi | 89% | 2684 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 51,648 psi | 85% | 2690 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 62% | 1703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,011 psi | 87% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,940 psi | 90% | 2743 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,114 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,937 psi | 82% | 2740 fps | 97.7% |
| Rottweil R 904 | <<locked>> | 90% | 54,911 psi | 90% | 2667 fps | 99% |
| Rottweil R 905 | <<locked>> | 90% | 52,866 psi | 87% | 2677 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 52,011 psi | 85% | 2592 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,099 psi | 89% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,272 psi | 86% | 2612 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,127 psi | 87% | 2569 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,475 psi | 86% | 2674 fps | 99.5% |
| Somchem S361 | <<locked>> | 88% | 52,765 psi | 87% | 2608 fps | 98.2% |
| Somchem S365 | <<locked>> | 86% | 51,967 psi | 85% | 2631 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,330 psi | 88% | 2651 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 54,085 psi | 89% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,359 psi | 88% | 2621 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,881 psi | 87% | 2635 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 84% | 52,417 psi | 86% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,071 psi | 90% | 2700 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,737 psi | 90% | 2766 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 54,520 psi | 90% | 2746 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,126 psi | 84% | 2743 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,446 psi | 86% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,839 psi | 90% | 2694 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,940 psi | 89% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,098 psi | 87% | 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% | 34,592 psi | 57% | 2310 fps | 98% |
| Accurate 4350 | <<locked>> | 80% | 46,325 psi | 76% | 2543 fps | 100% |
| Accurate High Country | 76.9 gr | 80% | 37,405 psi | 61% | 2461 fps | 95.2% |
| Accurate MAGPRO | 84.2 gr | 86% | 43,526 psi | 71% | 2579 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 38,595 psi | 63% | 2428 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 39,349 psi | 65% | 2470 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 37,855 psi | 62% | 2438 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 88% | 29,965 psi | 49% | 2290 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,001 psi | 64% | 2428 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,367 psi | 73% | 2546 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,169 psi | 84% | 2654 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,638 psi | 63% | 2425 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,447 psi | 57% | 2369 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,185 psi | 54% | 2339 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,921 psi | 47% | 2254 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,230 psi | 59% | 2467 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,140 psi | 82% | 2608 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 34,272 psi | 56% | 2365 fps | 95.1% |
| Bofors RP30 | <<locked>> | 90% | 36,753 psi | 60% | 2451 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 34,447 psi | 57% | 2369 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 48,849 psi | 80% | 2543 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,187 psi | 59% | 2402 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 47,863 psi | 79% | 2589 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,415 psi | 83% | 2598 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 42,003 psi | 69% | 2477 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,278 psi | 68% | 2464 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,887 psi | 69% | 2438 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,229 psi | 56% | 2438 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 47,427 psi | 78% | 2612 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 46% | 1486 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,382 psi | 73% | 2484 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,241 psi | 82% | 2566 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,019 psi | 72% | 2490 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,017 psi | 67% | 2425 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 37,855 psi | 62% | 2451 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,057 psi | 61% | 2480 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 47,863 psi | 79% | 2520 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,209 psi | 76% | 2513 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 29,849 psi | 49% | 2198 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 44,367 psi | 73% | 2516 fps | 98% |
| Norma 217 | <<locked>> | 94% | 32,460 psi | 53% | 2392 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 35,998 psi | 59% | 2434 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 45,382 psi | 75% | 2530 fps | 100% |
| Ramshot Grand | 80 gr | 84% | 37,362 psi | 61% | 2454 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 44,208 psi | 73% | 2530 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 33,286 psi | 55% | 2343 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 47% | 1522 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,166 psi | 76% | 2559 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,338 psi | 73% | 2579 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,082 psi | 51% | 2352 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,946 psi | 71% | 2615 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 39,900 psi | 66% | 2408 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 37,898 psi | 62% | 2408 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 80% | 48,849 psi | 80% | 2543 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,863 psi | 79% | 2520 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,209 psi | 76% | 2513 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,688 psi | 77% | 2470 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,579 psi | 62% | 2405 fps | 96.6% |
| Somchem S361 | <<locked>> | 80% | 40,596 psi | 67% | 2398 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,438 psi | 70% | 2490 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,537 psi | 63% | 2395 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,778 psi | 83% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,818 psi | 77% | 2523 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,373 psi | 55% | 2280 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,180 psi | 76% | 2530 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,217 psi | 61% | 2405 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 41,510 psi | 68% | 2536 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 38,827 psi | 64% | 2470 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 44,382 psi | 73% | 2625 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,803 psi | 75% | 2484 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,037 psi | 79% | 2589 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,472 psi | 48% | 2359 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,172 psi | 58% | 2326 fps | 95.6% |
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 73 powders for .338 Lapua Mag. loaded with the .338 | 250gr | Berger Hybrid OTM Tactical. Hodgdon Retumbo delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,851 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 1:11.5 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. Accurate MAGPRO, Accurate High Country, Ramshot Grand rank at the top here: for .338 Lapua Mag. with the .338 | 250gr | Berger Hybrid OTM Tactical 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.