Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 254gr | CutEdge MTAC 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, Norma MRP 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>> | 94% | 51,634 psi | 85% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,345 psi | 88% | 2625 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,186 psi | 89% | 2736 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 82% | 55,114 psi | 90% | 2589 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,375 psi | 89% | 2680 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 51,996 psi | 85% | 2680 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,485 psi | 76% | 2585 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,089 psi | 67% | 2546 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,534 psi | 90% | 2677 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,822 psi | 85% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,983 psi | 89% | 2671 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 51,750 psi | 85% | 2677 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,968 psi | 87% | 2654 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,199 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,953 psi | 87% | 2736 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,259 psi | 89% | 2648 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 54,346 psi | 89% | 2713 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,921 psi | 79% | 2648 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 51,750 psi | 85% | 2677 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 52,750 psi | 87% | 2575 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,285 psi | 84% | 2667 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 51,706 psi | 85% | 2625 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,607 psi | 90% | 2638 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 52,098 psi | 86% | 2625 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,563 psi | 90% | 2661 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,708 psi | 90% | 2605 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,995 psi | 84% | 2769 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 51,837 psi | 85% | 2657 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 60% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,259 psi | 89% | 2615 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,375 psi | 89% | 2602 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,780 psi | 88% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,403 psi | 88% | 2612 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 53,534 psi | 88% | 2717 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 54,708 psi | 90% | 2595 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,939 psi | 87% | 2595 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,663 psi | 86% | 2605 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,590 psi | 85% | 2615 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 36,521 psi | 60% | 2470 fps | 97.5% |
| Norma MRP | <<locked>> | 92% | 51,430 psi | 84% | 2697 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,257 psi | 86% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,896 psi | 88% | 2733 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,563 psi | 90% | 2667 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,098 psi | 86% | 2671 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,652 psi | 62% | 1673 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,403 psi | 88% | 2648 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,677 psi | 85% | 2671 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,300 psi | 84% | 2762 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,137 psi | 76% | 2651 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 53,896 psi | 88% | 2575 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,301 psi | 86% | 2602 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 53,374 psi | 88% | 2657 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 52,750 psi | 87% | 2575 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,708 psi | 90% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,939 psi | 87% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,157 psi | 89% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,954 psi | 89% | 2556 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,939 psi | 87% | 2654 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 53,708 psi | 88% | 2572 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,635 psi | 88% | 2595 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 52,141 psi | 86% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,795 psi | 88% | 2631 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,868 psi | 90% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,027 psi | 89% | 2605 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,258 psi | 87% | 2615 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 52,997 psi | 87% | 2608 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,042 psi | 90% | 2677 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,488 psi | 85% | 2690 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,520 psi | 90% | 2723 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,514 psi | 78% | 2661 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,476 psi | 88% | 2569 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,895 psi | 85% | 2628 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,708 psi | 88% | 2776 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,606 psi | 88% | 2628 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% | 31,908 psi | 52% | 2234 fps | 97.1% |
| Accurate 4350 | <<locked>> | 80% | 43,337 psi | 71% | 2470 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 43,540 psi | 71% | 2556 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 51,779 psi | 85% | 2543 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,361 psi | 60% | 2359 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 39,639 psi | 65% | 2454 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 37,913 psi | 62% | 2415 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 31,633 psi | 52% | 2320 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,771 psi | 69% | 2480 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,167 psi | 79% | 2589 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,347 psi | 60% | 2356 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,301 psi | 56% | 2349 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,879 psi | 51% | 2267 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 26,861 psi | 44% | 2175 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,460 psi | 55% | 2388 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,937 psi | 84% | 2595 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 34,142 psi | 56% | 2343 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 36,419 psi | 60% | 2428 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 34,301 psi | 56% | 2349 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 46,557 psi | 76% | 2477 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 36,347 psi | 60% | 2385 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 45,208 psi | 74% | 2520 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,080 psi | 79% | 2536 fps | 99% |
| Hodgdon H4831 | <<locked>> | 86% | 42,409 psi | 70% | 2464 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,611 psi | 68% | 2448 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,378 psi | 65% | 2375 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,185 psi | 56% | 2418 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 44,628 psi | 73% | 2543 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 45% | 1460 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,076 psi | 69% | 2418 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,935 psi | 79% | 2500 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,336 psi | 68% | 2425 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,452 psi | 68% | 2408 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 38,014 psi | 62% | 2431 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,484 psi | 75% | 2457 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,656 psi | 72% | 2444 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 27,311 psi | 45% | 2119 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 41,901 psi | 69% | 2451 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 31,923 psi | 52% | 2359 fps | 95.6% |
| Norma MRP | 73.7 gr | 80% | 33,489 psi | 55% | 2356 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 42,757 psi | 70% | 2461 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,492 psi | 62% | 2434 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,640 psi | 68% | 2461 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,272 psi | 55% | 2323 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 46% | 1493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,366 psi | 71% | 2493 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,713 psi | 68% | 2510 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,995 psi | 51% | 2329 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,801 psi | 70% | 2589 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 50,357 psi | 83% | 2530 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,797 psi | 62% | 2343 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 35,433 psi | 58% | 2336 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 46,557 psi | 76% | 2477 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,484 psi | 75% | 2457 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,656 psi | 72% | 2444 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,836 psi | 83% | 2418 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,353 psi | 73% | 2405 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,128 psi | 58% | 2329 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 83% | 2526 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,031 psi | 67% | 2385 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,581 psi | 65% | 2421 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,085 psi | 59% | 2326 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,182 psi | 79% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,266 psi | 73% | 2457 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,373 psi | 55% | 2260 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 43,511 psi | 71% | 2461 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 34,519 psi | 57% | 2333 fps | 99.5% |
| Vihtavuori N560 | 79.2 gr | 86% | 41,771 psi | 69% | 2520 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 38,653 psi | 63% | 2448 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 98% | 44,295 psi | 73% | 2602 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,352 psi | 71% | 2425 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,382 psi | 75% | 2523 fps | 99.4% |
| Winchester StaBALL HD | 72.9 gr | 80% | 27,180 psi | 45% | 2274 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,215 psi | 58% | 2306 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 79 powders for .338 Lapua Mag. loaded with the .338 | 254gr | CutEdge MTAC. Winchester StaBALL HD delivers the highest muzzle velocity at 2,776 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,776 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 60–90 %, leaving at least 10 % headroom. The 254.0 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for .338 Lapua Mag. with the .338 | 254gr | CutEdge MTAC 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.