Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 248gr | Peregrine VLR-4 bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand 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% | 54,201 psi | 89% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,330 psi | 86% | 2641 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,953 psi | 87% | 2746 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 54,302 psi | 89% | 2608 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,519 psi | 88% | 2697 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 54,795 psi | 90% | 2753 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,527 psi | 75% | 2595 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,176 psi | 66% | 2552 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,621 psi | 88% | 2694 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,476 psi | 88% | 2697 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,650 psi | 90% | 2710 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,968 psi | 87% | 2684 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,462 psi | 89% | 2746 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 51,793 psi | 85% | 2671 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,010 psi | 84% | 2723 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,590 psi | 85% | 2749 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,388 psi | 88% | 2661 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 53,403 psi | 88% | 2730 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,949 psi | 77% | 2661 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 54,462 psi | 89% | 2746 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 52,112 psi | 86% | 2595 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,198 psi | 82% | 2677 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 54,433 psi | 89% | 2694 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,722 psi | 88% | 2654 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,766 psi | 90% | 2694 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,737 psi | 88% | 2677 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,722 psi | 88% | 2621 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,879 psi | 82% | 2779 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 54,781 psi | 90% | 2733 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,374 psi | 88% | 2631 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,563 psi | 88% | 2618 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,026 psi | 87% | 2638 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,678 psi | 86% | 2628 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 52,402 psi | 86% | 2726 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 53,838 psi | 88% | 2615 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,054 psi | 85% | 2612 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,750 psi | 85% | 2625 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,215 psi | 89% | 2684 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 35,621 psi | 58% | 2477 fps | 96.9% |
| Norma MRP | <<locked>> | 94% | 54,143 psi | 89% | 2766 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,679 psi | 90% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,895 psi | 87% | 2746 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 53,534 psi | 88% | 2684 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,984 psi | 90% | 2740 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,652 psi | 62% | 1693 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,056 psi | 89% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,330 psi | 86% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,462 psi | 89% | 2743 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,256 psi | 83% | 2779 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,150 psi | 74% | 2661 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 82% | 52,968 psi | 87% | 2595 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,737 psi | 90% | 2667 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 52,315 psi | 86% | 2671 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 52,112 psi | 86% | 2595 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,838 psi | 88% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,054 psi | 85% | 2612 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,505 psi | 89% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,388 psi | 88% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,272 psi | 87% | 2572 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,880 psi | 85% | 2667 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 52,852 psi | 87% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,707 psi | 87% | 2608 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 54,766 psi | 90% | 2677 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,794 psi | 87% | 2648 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 53,983 psi | 89% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,069 psi | 87% | 2621 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,199 psi | 86% | 2628 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 52,098 psi | 86% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,896 psi | 88% | 2694 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,157 psi | 89% | 2762 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,476 psi | 88% | 2740 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,489 psi | 86% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,621 psi | 90% | 2697 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,185 psi | 86% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,736 psi | 87% | 2644 fps | 99.2% |
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% | 31,212 psi | 51% | 2244 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 42,467 psi | 70% | 2484 fps | 99.9% |
| Accurate MAGPRO | 82.7 gr | 88% | 42,757 psi | 70% | 2569 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,053 psi | 84% | 2562 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,694 psi | 59% | 2369 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 41,626 psi | 68% | 2523 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 39,813 psi | 65% | 2480 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 30,980 psi | 51% | 2326 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,984 psi | 59% | 2369 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,133 psi | 68% | 2497 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,369 psi | 78% | 2608 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,665 psi | 59% | 2365 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,998 psi | 59% | 2411 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,240 psi | 50% | 2277 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,166 psi | 46% | 2238 fps | 95.7% |
| Alliant Reloder-26 | 76 gr | 80% | 32,648 psi | 54% | 2395 fps | 98.5% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,270 psi | 83% | 2608 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 35,810 psi | 59% | 2408 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 38,145 psi | 63% | 2493 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 35,998 psi | 59% | 2411 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,832 psi | 75% | 2493 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 92% | 38,159 psi | 63% | 2448 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 44,382 psi | 73% | 2533 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 47,282 psi | 78% | 2552 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 41,582 psi | 68% | 2470 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,729 psi | 72% | 2513 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,624 psi | 63% | 2388 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,810 psi | 59% | 2480 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 43,685 psi | 72% | 2556 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 45% | 1476 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,365 psi | 68% | 2431 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,224 psi | 78% | 2520 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 40,553 psi | 67% | 2438 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 40,756 psi | 67% | 2421 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 39,900 psi | 66% | 2500 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 44,773 psi | 74% | 2470 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 42,931 psi | 70% | 2461 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 28,587 psi | 47% | 2178 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 41,176 psi | 68% | 2464 fps | 97% |
| Norma 217 | <<locked>> | 98% | 33,388 psi | 55% | 2421 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 32,779 psi | 54% | 2365 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,959 psi | 69% | 2477 fps | 99.9% |
| Ramshot Grand | 80.5 gr | 88% | 39,537 psi | 65% | 2507 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,843 psi | 67% | 2474 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 32,518 psi | 53% | 2329 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 46% | 1512 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,328 psi | 83% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,482 psi | 70% | 2507 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,872 psi | 67% | 2520 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,532 psi | 53% | 2398 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 41,742 psi | 69% | 2595 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 49,501 psi | 81% | 2546 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,581 psi | 65% | 2405 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 34,882 psi | 57% | 2349 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,832 psi | 75% | 2493 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,773 psi | 74% | 2470 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 42,931 psi | 70% | 2461 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,039 psi | 84% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,314 psi | 83% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,627 psi | 72% | 2421 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,563 psi | 57% | 2346 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 49,661 psi | 82% | 2546 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,134 psi | 71% | 2448 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,725 psi | 64% | 2434 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,389 psi | 58% | 2336 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,398 psi | 78% | 2474 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,468 psi | 71% | 2474 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,911 psi | 57% | 2320 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 42,743 psi | 70% | 2474 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,750 psi | 55% | 2346 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 40,872 psi | 67% | 2530 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 40,466 psi | 66% | 2513 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,540 psi | 70% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,556 psi | 73% | 2536 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,600 psi | 44% | 2277 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,014 psi | 61% | 2369 fps | 95.9% |
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 76 powders for .338 Lapua Mag. loaded with the .338 | 248gr | Peregrine VLR-4. Winchester StaBALL HD delivers the highest muzzle velocity at 2,792 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,792 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 248.0 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. Accurate MAGPRO, Ramshot Grand, Alliant Reloder-26 rank at the top here: for .338 Lapua Mag. with the .338 | 248gr | Peregrine VLR-4 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.