Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 231gr | Peregrine VLR-5 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, Alliant Reloder-26 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>> | 96% | 53,374 psi | 88% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 51,430 psi | 84% | 2726 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,040 psi | 85% | 2828 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 53,621 psi | 88% | 2700 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,663 psi | 86% | 2782 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 53,954 psi | 89% | 2835 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,860 psi | 74% | 2667 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,653 psi | 65% | 2625 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,665 psi | 90% | 2720 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,808 psi | 87% | 2789 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,766 psi | 88% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,301 psi | 86% | 2769 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,563 psi | 88% | 2828 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,447 psi | 89% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,212 psi | 82% | 2805 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,752 psi | 90% | 2894 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,547 psi | 86% | 2812 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,035 psi | 76% | 2736 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 53,563 psi | 88% | 2828 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 54,781 psi | 90% | 2733 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,530 psi | 81% | 2756 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 86% | 53,650 psi | 88% | 2782 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 53,011 psi | 87% | 2740 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 54,012 psi | 89% | 2779 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,837 psi | 87% | 2759 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,939 psi | 87% | 2713 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,182 psi | 81% | 2861 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,795 psi | 88% | 2815 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 60% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,707 psi | 87% | 2717 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,040 psi | 87% | 2707 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 52,040 psi | 85% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,967 psi | 85% | 2710 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 96% | 51,619 psi | 85% | 2808 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 53,200 psi | 87% | 2703 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,679 psi | 90% | 2749 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,821 psi | 83% | 2703 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,417 psi | 88% | 2769 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 53,330 psi | 88% | 2851 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 53,911 psi | 89% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,982 psi | 85% | 2825 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 52,750 psi | 87% | 2769 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,998 psi | 89% | 2822 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1765 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,069 psi | 87% | 2789 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,547 psi | 85% | 2749 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,766 psi | 88% | 2835 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,487 psi | 81% | 2854 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 82% | 52,098 psi | 86% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,201 psi | 89% | 2753 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 54,998 psi | 90% | 2808 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 54,781 psi | 90% | 2733 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,200 psi | 87% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,679 psi | 90% | 2749 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,780 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,866 psi | 87% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,562 psi | 86% | 2657 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,563 psi | 90% | 2805 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 52,112 psi | 86% | 2680 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,040 psi | 85% | 2690 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 53,940 psi | 89% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,054 psi | 85% | 2733 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 53,403 psi | 88% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,243 psi | 86% | 2707 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 51,459 psi | 84% | 2710 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 54,853 psi | 90% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,127 psi | 87% | 2782 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,359 psi | 88% | 2844 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,562 psi | 86% | 2818 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,808 psi | 85% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,824 psi | 88% | 2782 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,097 psi | 84% | 2877 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,953 psi | 85% | 2726 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% | 30,632 psi | 50% | 2306 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 41,713 psi | 68% | 2562 fps | 99.7% |
| Accurate MAGPRO | 88 gr | 90% | 45,063 psi | 74% | 2700 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 50,502 psi | 83% | 2651 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,579 psi | 62% | 2493 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 41,104 psi | 67% | 2598 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 41,945 psi | 69% | 2608 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 32,634 psi | 54% | 2444 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,300 psi | 84% | 2671 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,408 psi | 66% | 2575 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,470 psi | 76% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,565 psi | 62% | 2493 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,985 psi | 62% | 2543 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,631 psi | 49% | 2339 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,588 psi | 49% | 2356 fps | 95.7% |
| Alliant Reloder-26 | 79.1 gr | 80% | 31,995 psi | 53% | 2457 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 37,637 psi | 62% | 2533 fps | 95.4% |
| Bofors RP30 | <<locked>> | 96% | 40,059 psi | 66% | 2618 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 37,985 psi | 62% | 2543 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 45,281 psi | 74% | 2575 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 40,176 psi | 66% | 2575 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 43,700 psi | 72% | 2612 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 46,543 psi | 76% | 2631 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 43,961 psi | 72% | 2605 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,134 psi | 71% | 2589 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,927 psi | 62% | 2464 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,579 psi | 62% | 2608 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,931 psi | 70% | 2631 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 45% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,785 psi | 67% | 2507 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,659 psi | 77% | 2602 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 39,900 psi | 66% | 2513 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,917 psi | 70% | 2549 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 42,090 psi | 69% | 2631 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,063 psi | 72% | 2552 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 42,308 psi | 69% | 2536 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 30,037 psi | 49% | 2293 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 40,509 psi | 67% | 2536 fps | 96.1% |
| Norma MRP | <<locked>> | 82% | 34,505 psi | 57% | 2490 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,321 psi | 68% | 2556 fps | 99.6% |
| Ramshot Grand | 85.7 gr | 90% | 41,742 psi | 69% | 2638 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,205 psi | 66% | 2549 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 34,476 psi | 57% | 2457 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 46% | 1578 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,385 psi | 81% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,669 psi | 68% | 2582 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,190 psi | 66% | 2598 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,345 psi | 56% | 2523 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 48,805 psi | 80% | 2635 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,727 psi | 69% | 2533 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 36,695 psi | 60% | 2474 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,281 psi | 74% | 2575 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,063 psi | 72% | 2552 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 42,308 psi | 69% | 2536 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,285 psi | 83% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,574 psi | 81% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,149 psi | 71% | 2500 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,361 psi | 60% | 2467 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,878 psi | 80% | 2631 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,498 psi | 75% | 2579 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,000 psi | 62% | 2513 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,737 psi | 57% | 2405 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,775 psi | 77% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,757 psi | 70% | 2552 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 36,753 psi | 60% | 2441 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 42,119 psi | 69% | 2556 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,170 psi | 54% | 2415 fps | 98.7% |
| Vihtavuori N560 | <<locked>> | 88% | 43,149 psi | 71% | 2661 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 42,569 psi | 70% | 2638 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,843 psi | 69% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,874 psi | 72% | 2615 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,092 psi | 43% | 2329 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,521 psi | 60% | 2441 fps | 95% |
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 79 powders for .338 Lapua Mag. loaded with the .338 | 231gr | Peregrine VLR-5. Alliant Reloder-26 delivers the highest muzzle velocity at 2,894 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,894 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 231.0 gr projectile in 0.338" calls for a 1:12.0 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. Accurate MAGPRO, Alliant Reloder-26, Ramshot Grand rank at the top here: for .338 Lapua Mag. with the .338 | 231gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N568 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.