Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 250gr | Target Virtus bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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>> | 94% | 51,779 psi | 85% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,461 psi | 88% | 2648 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,157 psi | 89% | 2756 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 92% | 54,534 psi | 90% | 2703 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,286 psi | 86% | 2707 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,514 psi | 76% | 2608 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,234 psi | 68% | 2569 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,824 psi | 90% | 2703 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,665 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,938 psi | 85% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,143 psi | 89% | 2694 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,083 psi | 86% | 2703 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,113 psi | 87% | 2677 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,214 psi | 86% | 2733 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,997 psi | 87% | 2759 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,404 psi | 89% | 2674 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 54,621 psi | 90% | 2740 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,138 psi | 79% | 2674 fps | 98.4% |
| Bofors RP5 | <<locked>> | 94% | 52,083 psi | 86% | 2703 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 52,910 psi | 87% | 2602 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,459 psi | 84% | 2690 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 51,996 psi | 85% | 2651 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,752 psi | 90% | 2664 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 52,243 psi | 86% | 2651 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,897 psi | 90% | 2690 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,839 psi | 90% | 2628 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,184 psi | 84% | 2795 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 52,011 psi | 85% | 2684 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,941 psi | 61% | 1654 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,346 psi | 89% | 2638 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,520 psi | 90% | 2625 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,099 psi | 89% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,577 psi | 88% | 2638 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 53,577 psi | 88% | 2740 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 54,839 psi | 90% | 2621 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,881 psi | 87% | 2618 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,779 psi | 87% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,648 psi | 85% | 2638 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 36,579 psi | 60% | 2493 fps | 97.4% |
| Norma MRP | <<locked>> | 92% | 51,561 psi | 85% | 2720 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,199 psi | 86% | 2635 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,099 psi | 89% | 2756 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,549 psi | 90% | 2690 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,243 psi | 86% | 2697 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,621 psi | 88% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,880 psi | 85% | 2697 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,561 psi | 85% | 2789 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,354 psi | 76% | 2677 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 53,925 psi | 89% | 2602 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,373 psi | 86% | 2625 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 53,359 psi | 88% | 2680 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 52,910 psi | 87% | 2602 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,839 psi | 90% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,881 psi | 87% | 2618 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,259 psi | 89% | 2484 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,056 psi | 89% | 2579 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,939 psi | 87% | 2677 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 53,737 psi | 88% | 2595 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,693 psi | 88% | 2618 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 52,272 psi | 86% | 2635 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,751 psi | 88% | 2654 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,027 psi | 90% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,143 psi | 89% | 2628 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,345 psi | 88% | 2638 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,287 psi | 87% | 2635 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 51,663 psi | 85% | 2651 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,590 psi | 85% | 2713 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 2749 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,805 psi | 78% | 2687 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,461 psi | 88% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,996 psi | 85% | 2651 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,925 psi | 89% | 2802 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,882 psi | 88% | 2654 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% | 31,937 psi | 52% | 2254 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 43,381 psi | 71% | 2493 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 43,685 psi | 72% | 2579 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 36,405 psi | 60% | 2379 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 39,697 psi | 65% | 2477 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 38,029 psi | 62% | 2438 fps | 95% |
| ADI AR 2225 | <<locked>> | 92% | 31,749 psi | 52% | 2343 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,724 psi | 60% | 2379 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,843 psi | 69% | 2503 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,327 psi | 79% | 2612 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,376 psi | 60% | 2375 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,447 psi | 57% | 2372 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,937 psi | 51% | 2287 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 26,890 psi | 44% | 2195 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,547 psi | 55% | 2408 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,082 psi | 84% | 2618 fps | 95.4% |
| Bofors RP15 | <<locked>> | 86% | 36,550 psi | 60% | 2418 fps | 95.9% |
| Bofors RP30 | <<locked>> | 92% | 36,579 psi | 60% | 2451 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 34,447 psi | 57% | 2372 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 46,615 psi | 77% | 2500 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 36,332 psi | 60% | 2402 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 45,382 psi | 75% | 2543 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,080 psi | 79% | 2559 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 42,453 psi | 70% | 2484 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,684 psi | 68% | 2467 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,479 psi | 65% | 2395 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,229 psi | 56% | 2434 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 44,701 psi | 73% | 2566 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 45% | 1473 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,148 psi | 69% | 2438 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,167 psi | 79% | 2530 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,408 psi | 68% | 2444 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,553 psi | 68% | 2431 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 38,087 psi | 63% | 2454 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 45,556 psi | 75% | 2480 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,700 psi | 72% | 2467 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 27,383 psi | 45% | 2139 fps | 95% |
| Norma 204 | <<locked>> | 80% | 41,930 psi | 69% | 2470 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 32,010 psi | 53% | 2379 fps | 95.4% |
| Norma MRP | 74.7 gr | 80% | 33,489 psi | 55% | 2375 fps | 96.4% |
| Norma URP | <<locked>> | 80% | 42,830 psi | 70% | 2484 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,695 psi | 62% | 2457 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 41,640 psi | 68% | 2480 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,257 psi | 55% | 2343 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,166 psi | 46% | 1512 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,337 psi | 71% | 2513 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,829 psi | 69% | 2533 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,980 psi | 51% | 2349 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,047 psi | 71% | 2615 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 50,415 psi | 83% | 2552 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,840 psi | 62% | 2362 fps | 95% |
| Rottweil R 905 | <<locked>> | 80% | 35,636 psi | 59% | 2359 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 46,615 psi | 77% | 2500 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,556 psi | 75% | 2480 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,700 psi | 72% | 2467 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,966 psi | 84% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,527 psi | 73% | 2431 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,317 psi | 58% | 2356 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 50,531 psi | 83% | 2549 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,075 psi | 67% | 2405 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 39,668 psi | 65% | 2444 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,100 psi | 59% | 2346 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,225 psi | 79% | 2477 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,295 psi | 73% | 2480 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,359 psi | 55% | 2280 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 43,685 psi | 72% | 2484 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,577 psi | 57% | 2356 fps | 99.4% |
| Vihtavuori N560 | 80.3 gr | 86% | 41,814 psi | 69% | 2539 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 38,638 psi | 63% | 2467 fps | 95% |
| Vihtavuori N568 | <<locked>> | 98% | 44,469 psi | 73% | 2625 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,453 psi | 71% | 2448 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,556 psi | 75% | 2546 fps | 99.3% |
| Winchester StaBALL HD | 73.9 gr | 80% | 27,195 psi | 45% | 2290 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,346 psi | 58% | 2329 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 74 powders for .338 Lapua Mag. loaded with the .338 | 250gr | Target Virtus. Winchester StaBALL HD delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,802 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 250.0 gr projectile in 0.338" calls for a 1:11.0 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .338 Lapua Mag. with the .338 | 250gr | Target Virtus 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.