Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 280gr | Rhino Solid Shank bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N560.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 53,606 psi | 88% | 2503 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,549 psi | 90% | 2520 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 52,185 psi | 86% | 2592 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 86% | 51,808 psi | 85% | 2530 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 53,113 psi | 87% | 2589 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 2615 fps | 99.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,298 psi | 81% | 2585 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,112 psi | 86% | 2520 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,955 psi | 90% | 2572 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,490 psi | 88% | 2589 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,027 psi | 90% | 2552 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,578 psi | 90% | 2618 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 51,488 psi | 85% | 2585 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,430 psi | 84% | 2641 fps | 97.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,375 psi | 89% | 2559 fps | 97.9% |
| Bofors RP15 | <<locked>> | 92% | 52,721 psi | 87% | 2575 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 54,186 psi | 89% | 2628 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 53,490 psi | 88% | 2589 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 52,634 psi | 86% | 2585 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 52,939 psi | 87% | 2533 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 51,808 psi | 85% | 2516 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 52,330 psi | 86% | 2451 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,316 psi | 88% | 2690 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,536 psi | 62% | 1581 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,520 psi | 90% | 2510 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,998 psi | 90% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,780 psi | 88% | 2516 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 54,955 psi | 90% | 2625 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,759 psi | 73% | 2507 fps | 98.8% |
| Lovex S065 | <<locked>> | 82% | 55,085 psi | 90% | 2487 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 53,417 psi | 88% | 2490 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,926 psi | 90% | 2520 fps | 100% |
| Norma 204 | <<locked>> | 82% | 51,967 psi | 85% | 2510 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,382 psi | 75% | 2533 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 53,374 psi | 88% | 2605 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,026 psi | 87% | 2503 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 51,938 psi | 85% | 2592 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 51,866 psi | 85% | 2513 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,099 psi | 89% | 2582 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,464 psi | 63% | 1621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,520 psi | 90% | 2539 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 52,968 psi | 87% | 2566 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,722 psi | 88% | 2684 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 52,939 psi | 87% | 2651 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 86% | 52,808 psi | 87% | 2503 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 54,418 psi | 89% | 2562 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,085 psi | 90% | 2487 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,417 psi | 88% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,012 psi | 89% | 2448 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,041 psi | 89% | 2559 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 53,969 psi | 89% | 2500 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 53,751 psi | 88% | 2503 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,824 psi | 90% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,534 psi | 90% | 2493 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,621 psi | 90% | 2523 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 53,113 psi | 87% | 2536 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 82% | 53,824 psi | 88% | 2500 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 53,766 psi | 88% | 2533 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,098 psi | 87% | 2605 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 94% | 53,345 psi | 88% | 2595 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 53,824 psi | 88% | 2651 fps | 98.9% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,781 psi | 90% | 2703 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,780 psi | 88% | 2454 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,432 psi | 88% | 2631 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,578 psi | 90% | 2533 fps | 100% |
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% | 38,508 psi | 63% | 2267 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 51,126 psi | 84% | 2474 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 39,392 psi | 65% | 2369 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 42,496 psi | 70% | 2379 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 37,956 psi | 62% | 2323 fps | 96.6% |
| ADI AR 2217 | <<locked>> | 86% | 34,505 psi | 57% | 2251 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 82% | 27,456 psi | 45% | 2113 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,805 psi | 80% | 2474 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,525 psi | 70% | 2375 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,406 psi | 63% | 2333 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,202 psi | 61% | 2287 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,126 psi | 53% | 2224 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,147 psi | 68% | 2425 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,469 psi | 73% | 2523 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,136 psi | 74% | 2405 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 35,810 psi | 59% | 2277 fps | 97.2% |
| Bofors RP30 | <<locked>> | 84% | 33,895 psi | 56% | 2267 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 38,406 psi | 63% | 2333 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 82% | 32,837 psi | 54% | 2211 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 80% | 40,509 psi | 67% | 2326 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,784 psi | 65% | 2313 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,137 psi | 76% | 2369 fps | 100% |
| Hodgdon Retumbo | 74.4 gr | 80% | 31,372 psi | 52% | 2251 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 46% | 1411 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,283 psi | 79% | 2418 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 48,356 psi | 79% | 2421 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,989 psi | 69% | 2323 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 36,637 psi | 60% | 2306 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,389 psi | 56% | 2300 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 51,851 psi | 85% | 2444 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,227 psi | 82% | 2444 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,185 psi | 54% | 2159 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 48,617 psi | 80% | 2461 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 28,326 psi | 47% | 2165 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 40,408 psi | 66% | 2392 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 49,792 psi | 82% | 2457 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,216 psi | 59% | 2310 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 80% | 48,588 psi | 80% | 2464 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,401 psi | 53% | 2208 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 47% | 1447 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,010 psi | 84% | 2493 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,284 psi | 81% | 2516 fps | 100% |
| ReloadSwiss RS 76 | 79.6 gr | 80% | 30,298 psi | 50% | 2224 fps | 97% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 36,492 psi | 60% | 2356 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 43,598 psi | 72% | 2356 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,916 psi | 69% | 2362 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,851 psi | 85% | 2444 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,227 psi | 82% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,560 psi | 83% | 2402 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,582 psi | 68% | 2359 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 44,324 psi | 73% | 2349 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 47,166 psi | 77% | 2418 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,467 psi | 70% | 2346 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 51,227 psi | 84% | 2451 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,956 psi | 61% | 2238 fps | 98.1% |
| Vihtavuori N170 | <<locked>> | 94% | 49,734 psi | 82% | 2484 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 50,488 psi | 83% | 2454 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,466 psi | 68% | 2352 fps | 100% |
| Vihtavuori N560 | 77.2 gr | 80% | 40,350 psi | 66% | 2385 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 35,665 psi | 59% | 2280 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 37,898 psi | 62% | 2369 fps | 95% |
| Vihtavuori N570 | <<locked>> | 94% | 44,324 psi | 73% | 2530 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,227 psi | 82% | 2408 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,953 psi | 56% | 2329 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,914 psi | 64% | 2283 fps | 98.1% |
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 71 powders for .338 Lapua Mag. loaded with the .338 | 280gr | Rhino Solid Shank. Vihtavuori N570 delivers the highest muzzle velocity at 2,703 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,703 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 280.0 gr projectile in 0.338" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N560 rank at the top here: for .338 Lapua Mag. with the .338 | 280gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.