Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 270gr | Peregrine VLR-4 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% | 52,765 psi | 87% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,462 psi | 89% | 2556 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 51,547 psi | 85% | 2615 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 51,938 psi | 85% | 2562 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 53,069 psi | 87% | 2618 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,326 psi | 78% | 2523 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,916 psi | 69% | 2490 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,257 psi | 86% | 2559 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,939 psi | 87% | 2569 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,897 psi | 90% | 2602 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,953 psi | 87% | 2615 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,157 psi | 89% | 2585 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,258 psi | 87% | 2641 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,114 psi | 89% | 2664 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,085 psi | 90% | 2585 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 51,924 psi | 85% | 2598 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,226 psi | 81% | 2592 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 52,953 psi | 87% | 2615 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 53,664 psi | 88% | 2507 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,301 psi | 86% | 2605 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 52,721 psi | 87% | 2556 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,098 psi | 86% | 2520 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 53,142 psi | 87% | 2562 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,098 psi | 86% | 2546 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,272 psi | 86% | 2490 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,112 psi | 86% | 2707 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 52,895 psi | 87% | 2592 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 61% | 1578 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 51,953 psi | 85% | 2500 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 51,938 psi | 85% | 2484 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,911 psi | 90% | 2549 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,418 psi | 89% | 2549 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 96% | 54,578 psi | 90% | 2651 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 37,478 psi | 62% | 2402 fps | 96.1% |
| Lovex S065 | <<locked>> | 84% | 52,344 psi | 86% | 2480 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,824 psi | 88% | 2526 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,795 psi | 88% | 2539 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,547 psi | 86% | 2549 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 37,507 psi | 62% | 2425 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 52,533 psi | 86% | 2631 fps | 100% |
| Norma URP | <<locked>> | 86% | 53,214 psi | 87% | 2543 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 51,242 psi | 84% | 2612 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 52,025 psi | 85% | 2549 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,200 psi | 87% | 2608 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,724 psi | 62% | 1614 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,476 psi | 89% | 2579 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,895 psi | 87% | 2605 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,576 psi | 86% | 2703 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,268 psi | 78% | 2598 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 54,824 psi | 90% | 2503 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,229 psi | 87% | 2536 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 54,331 psi | 89% | 2592 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 53,664 psi | 88% | 2507 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,344 psi | 86% | 2480 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,824 psi | 88% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,955 psi | 90% | 2385 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,868 psi | 90% | 2487 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,896 psi | 88% | 2585 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 54,563 psi | 90% | 2500 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,491 psi | 89% | 2530 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 53,388 psi | 88% | 2543 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,839 psi | 90% | 2566 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 52,373 psi | 86% | 2431 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,056 psi | 90% | 2533 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,215 psi | 89% | 2549 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 54,099 psi | 89% | 2539 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,765 psi | 87% | 2562 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,518 psi | 86% | 2628 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 98% | 51,996 psi | 85% | 2608 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,791 psi | 80% | 2605 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,418 psi | 89% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,924 psi | 87% | 2559 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,053 psi | 84% | 2657 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,781 psi | 90% | 2566 fps | 99.7% |
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% | 32,605 psi | 54% | 2185 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 44,193 psi | 73% | 2408 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 41,524 psi | 68% | 2444 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 37,144 psi | 61% | 2303 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 37,724 psi | 62% | 2343 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 36,289 psi | 60% | 2313 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 90% | 30,255 psi | 50% | 2221 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,670 psi | 70% | 2415 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,327 psi | 81% | 2520 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,028 psi | 61% | 2297 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 32,808 psi | 54% | 2244 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,488 psi | 52% | 2211 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,485 psi | 45% | 2133 fps | 96.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,316 psi | 56% | 2336 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 48,704 psi | 80% | 2484 fps | 95.5% |
| Bofors RP15 | <<locked>> | 82% | 32,692 psi | 54% | 2241 fps | 95.1% |
| Bofors RP30 | <<locked>> | 90% | 34,838 psi | 57% | 2323 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 32,808 psi | 54% | 2244 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 47,369 psi | 78% | 2415 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 34,592 psi | 57% | 2277 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,122 psi | 76% | 2457 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 48,878 psi | 80% | 2470 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 84% | 40,364 psi | 66% | 2352 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 39,581 psi | 65% | 2336 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,190 psi | 66% | 2313 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 32,706 psi | 54% | 2310 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 45,585 psi | 75% | 2480 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 45% | 1407 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,917 psi | 70% | 2359 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,791 psi | 80% | 2438 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 42,264 psi | 69% | 2362 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,639 psi | 65% | 2300 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 36,289 psi | 60% | 2326 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 35,027 psi | 57% | 2346 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,122 psi | 76% | 2388 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 44,483 psi | 73% | 2382 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 28,021 psi | 46% | 2073 fps | 96.1% |
| Norma 204 | <<locked>> | 80% | 42,786 psi | 70% | 2392 fps | 98.1% |
| Norma 217 | <<locked>> | 94% | 30,618 psi | 50% | 2260 fps | 95.7% |
| Norma MRP | 71.5 gr | 80% | 34,214 psi | 56% | 2303 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 43,700 psi | 72% | 2398 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 35,766 psi | 59% | 2329 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 42,540 psi | 70% | 2402 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 31,676 psi | 52% | 2221 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 46% | 1440 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,237 psi | 73% | 2428 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,569 psi | 70% | 2448 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 29,443 psi | 48% | 2224 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 40,654 psi | 67% | 2477 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 51,358 psi | 84% | 2457 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,551 psi | 63% | 2287 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 36,289 psi | 60% | 2283 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 80% | 47,369 psi | 78% | 2415 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,122 psi | 76% | 2388 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 44,483 psi | 73% | 2382 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,721 psi | 85% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,165 psi | 74% | 2346 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,969 psi | 59% | 2280 fps | 96.6% |
| Somchem S355 | <<locked>> | 80% | 51,198 psi | 84% | 2454 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 38,986 psi | 64% | 2274 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 40,611 psi | 67% | 2359 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,811 psi | 60% | 2270 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 49,110 psi | 81% | 2388 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,063 psi | 74% | 2392 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 31,763 psi | 52% | 2156 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 44,338 psi | 73% | 2398 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,360 psi | 58% | 2277 fps | 99.8% |
| Vihtavuori N560 | 75.1 gr | 84% | 39,784 psi | 65% | 2408 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 88% | 36,840 psi | 60% | 2339 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 96% | 42,308 psi | 69% | 2490 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,208 psi | 73% | 2362 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,311 psi | 76% | 2457 fps | 99.7% |
| Winchester StaBALL HD | 70.8 gr | 80% | 27,876 psi | 46% | 2228 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 33,533 psi | 55% | 2201 fps | 95.5% |
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 78 powders for .338 Lapua Mag. loaded with the .338 | 270gr | Peregrine VLR-4. Hodgdon Retumbo delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,578 fps to 2,707 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 270.0 gr projectile in 0.338" calls for a 1:9.5 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .338 Lapua Mag. with the .338 | 270gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.