Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 227gr | CutEdge MTAC bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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% | 52,330 psi | 86% | 2746 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 53,925 psi | 89% | 2785 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,708 psi | 90% | 2887 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 52,924 psi | 87% | 2710 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,706 psi | 85% | 2785 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 96% | 52,808 psi | 87% | 2835 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,740 psi | 64% | 2618 fps | 97.6% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 51,808 psi | 85% | 2779 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,708 psi | 88% | 2726 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 51,547 psi | 85% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,475 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,578 psi | 90% | 2825 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,301 psi | 86% | 2831 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,127 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,023 psi | 80% | 2805 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,272 psi | 87% | 2894 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,839 psi | 90% | 2867 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 54,520 psi | 90% | 2743 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,846 psi | 74% | 2730 fps | 96.8% |
| Bofors RP5 | <<locked>> | 96% | 52,301 psi | 86% | 2831 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 53,896 psi | 88% | 2740 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2753 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 54,781 psi | 90% | 2762 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,634 psi | 86% | 2785 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 52,098 psi | 86% | 2746 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 52,852 psi | 87% | 2779 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,909 psi | 85% | 2762 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,938 psi | 85% | 2720 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,022 psi | 79% | 2858 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 52,750 psi | 87% | 2818 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 60% | 1736 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 51,822 psi | 85% | 2723 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,199 psi | 86% | 2713 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,505 psi | 89% | 2779 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,418 psi | 89% | 2769 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 54,143 psi | 89% | 2871 fps | 98.2% |
| Lovex S065 | <<locked>> | 86% | 52,330 psi | 86% | 2710 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,780 psi | 88% | 2753 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,835 psi | 82% | 2707 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 52,460 psi | 86% | 2772 fps | 98.6% |
| Norma MRP | <<locked>> | 94% | 51,996 psi | 85% | 2854 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 52,924 psi | 87% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,650 psi | 90% | 2887 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 51,779 psi | 85% | 2776 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,692 psi | 87% | 2822 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 61% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,650 psi | 90% | 2749 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,924 psi | 85% | 2795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,114 psi | 89% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,504 psi | 86% | 2835 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,283 psi | 79% | 2854 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 54,607 psi | 90% | 2740 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,113 psi | 87% | 2756 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 53,954 psi | 89% | 2815 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 53,896 psi | 88% | 2740 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,330 psi | 86% | 2710 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,780 psi | 88% | 2753 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,823 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,040 psi | 85% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 51,692 psi | 85% | 2664 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,505 psi | 88% | 2808 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 54,549 psi | 90% | 2736 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,650 psi | 90% | 2746 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 52,620 psi | 86% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,520 psi | 90% | 2789 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 52,315 psi | 86% | 2664 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,723 psi | 90% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,925 psi | 89% | 2766 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 53,925 psi | 89% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,011 psi | 85% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,112 psi | 86% | 2848 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,300 psi | 84% | 2818 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,447 psi | 89% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,823 psi | 87% | 2789 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,505 psi | 88% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,607 psi | 90% | 2785 fps | 99% |
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% | 29,878 psi | 49% | 2306 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 40,785 psi | 67% | 2566 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 47,326 psi | 78% | 2762 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 49,676 psi | 82% | 2657 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,508 psi | 65% | 2556 fps | 95.7% |
| ADI AR 2213 | 83.3 gr | 90% | 43,091 psi | 71% | 2657 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 33,982 psi | 56% | 2497 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,740 psi | 65% | 2556 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,372 psi | 83% | 2677 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,581 psi | 65% | 2579 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,469 psi | 75% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,320 psi | 65% | 2549 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,159 psi | 61% | 2539 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,950 psi | 48% | 2339 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,964 psi | 48% | 2352 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,241 psi | 51% | 2454 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 39,363 psi | 65% | 2589 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 50,879 psi | 84% | 2690 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,146 psi | 64% | 2615 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 37,159 psi | 61% | 2539 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,498 psi | 73% | 2579 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 39,450 psi | 65% | 2575 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,184 psi | 84% | 2710 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,830 psi | 70% | 2615 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,701 psi | 75% | 2635 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 46,093 psi | 76% | 2664 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,237 psi | 74% | 2648 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,072 psi | 61% | 2467 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,825 psi | 60% | 2605 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,047 psi | 69% | 2635 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 45% | 1552 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,045 psi | 66% | 2510 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,876 psi | 75% | 2605 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 39,088 psi | 64% | 2516 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,904 psi | 74% | 2608 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 44,106 psi | 72% | 2690 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 43,279 psi | 71% | 2556 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 41,539 psi | 68% | 2539 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 31,299 psi | 51% | 2343 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 39,711 psi | 65% | 2536 fps | 95.6% |
| Norma MRP | 78.3 gr | 82% | 33,707 psi | 55% | 2487 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 40,466 psi | 66% | 2559 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 40,741 psi | 67% | 2631 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,363 psi | 65% | 2549 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 36,114 psi | 59% | 2510 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 46% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,184 psi | 84% | 2697 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,298 psi | 79% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,770 psi | 67% | 2585 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,378 psi | 65% | 2598 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,533 psi | 55% | 2516 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,863 psi | 79% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,729 psi | 72% | 2592 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 38,406 psi | 63% | 2530 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,498 psi | 73% | 2579 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,279 psi | 71% | 2556 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 41,539 psi | 68% | 2539 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,371 psi | 81% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,747 psi | 80% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,380 psi | 70% | 2503 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,058 psi | 62% | 2526 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,979 psi | 79% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,570 psi | 73% | 2579 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,115 psi | 61% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,448 psi | 60% | 2461 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 45,905 psi | 75% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,945 psi | 69% | 2556 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,969 psi | 59% | 2444 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,292 psi | 68% | 2559 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,329 psi | 53% | 2415 fps | 98.3% |
| Vihtavuori N560 | 86 gr | 90% | 45,324 psi | 74% | 2723 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 44,686 psi | 73% | 2700 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,031 psi | 67% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,004 psi | 71% | 2618 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,498 psi | 42% | 2323 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,305 psi | 63% | 2500 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 76 powders for .338 Lapua Mag. loaded with the .338 | 227gr | CutEdge MTAC. Winchester StaBALL HD delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,936 fps. ADI AR 2225 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 60–90 %, leaving at least 10 % headroom. The 227.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .338 Lapua Mag. with the .338 | 227gr | CutEdge MTAC 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.