Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | CutEdge MTH bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 54,824 psi | 90% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,098 psi | 87% | 2782 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,592 psi | 88% | 2881 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 52,040 psi | 85% | 2703 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,143 psi | 89% | 2831 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 51,938 psi | 85% | 2828 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,971 psi | 62% | 2605 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,418 psi | 89% | 2828 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,895 psi | 87% | 2726 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,085 psi | 89% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,619 psi | 85% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,664 psi | 88% | 2818 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,940 psi | 90% | 2881 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,083 psi | 86% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,993 psi | 79% | 2799 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,996 psi | 85% | 2887 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,708 psi | 88% | 2861 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 53,519 psi | 88% | 2740 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,816 psi | 72% | 2720 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 54,940 psi | 90% | 2881 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 53,040 psi | 87% | 2733 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,529 psi | 78% | 2743 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 53,838 psi | 88% | 2759 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 51,692 psi | 85% | 2779 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 54,781 psi | 90% | 2795 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 52,011 psi | 85% | 2772 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,578 psi | 90% | 2812 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,505 psi | 89% | 2762 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,036 psi | 77% | 2844 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 86% | 51,648 psi | 85% | 2812 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 60% | 1739 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,752 psi | 90% | 2736 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,317 psi | 89% | 2769 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,665 psi | 90% | 2759 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 53,548 psi | 88% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,447 psi | 88% | 2759 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 53,069 psi | 87% | 2861 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 55,027 psi | 90% | 2726 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,795 psi | 90% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 52,866 psi | 87% | 2746 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,704 psi | 80% | 2700 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 55,085 psi | 90% | 2822 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 54,636 psi | 90% | 2904 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 51,953 psi | 85% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,519 psi | 88% | 2877 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 54,244 psi | 89% | 2822 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,619 psi | 85% | 2815 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 61% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,766 psi | 88% | 2746 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,897 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,142 psi | 87% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,576 psi | 85% | 2831 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,181 psi | 77% | 2838 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 53,780 psi | 88% | 2736 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,272 psi | 86% | 2749 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 52,823 psi | 87% | 2805 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 53,040 psi | 87% | 2733 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,795 psi | 90% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,027 psi | 90% | 2726 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,866 psi | 87% | 2746 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 51,851 psi | 85% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,563 psi | 90% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,302 psi | 89% | 2710 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,388 psi | 86% | 2799 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 53,809 psi | 88% | 2736 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,708 psi | 88% | 2740 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 51,561 psi | 85% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,417 psi | 88% | 2782 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 55,042 psi | 90% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,954 psi | 89% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,881 psi | 87% | 2759 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 52,997 psi | 87% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,331 psi | 89% | 2828 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,737 psi | 90% | 2897 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,169 psi | 82% | 2805 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,403 psi | 88% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 51,880 psi | 85% | 2782 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,519 psi | 88% | 2776 fps | 98.7% |
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>> | 82% | 31,401 psi | 52% | 2352 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 40,030 psi | 66% | 2559 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 46,267 psi | 76% | 2753 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 48,950 psi | 80% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,754 psi | 64% | 2546 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 45,252 psi | 74% | 2707 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 35,592 psi | 58% | 2546 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,957 psi | 64% | 2546 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,603 psi | 81% | 2674 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,870 psi | 64% | 2572 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,657 psi | 73% | 2694 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,537 psi | 63% | 2539 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,928 psi | 64% | 2589 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,384 psi | 47% | 2333 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,269 psi | 50% | 2398 fps | 95.5% |
| Alliant Reloder-26 | 77.9 gr | 80% | 30,501 psi | 50% | 2444 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 38,566 psi | 63% | 2579 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 50,111 psi | 82% | 2687 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,944 psi | 67% | 2661 fps | 95.4% |
| Bofors RP5 | <<locked>> | 88% | 38,928 psi | 64% | 2589 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,816 psi | 72% | 2572 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 41,466 psi | 68% | 2621 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 50,415 psi | 83% | 2703 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,119 psi | 69% | 2608 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 45,020 psi | 74% | 2631 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 45,281 psi | 74% | 2654 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,558 psi | 78% | 2697 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,361 psi | 60% | 2461 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,580 psi | 63% | 2654 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 41,176 psi | 68% | 2625 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 45% | 1552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,503 psi | 85% | 2687 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,392 psi | 65% | 2503 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,223 psi | 74% | 2602 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 38,363 psi | 63% | 2513 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,150 psi | 72% | 2598 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 43,178 psi | 71% | 2677 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 51,605 psi | 85% | 2677 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,627 psi | 70% | 2552 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,886 psi | 67% | 2536 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 30,676 psi | 50% | 2333 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 39,059 psi | 64% | 2530 fps | 95.2% |
| Norma MRP | 79.4 gr | 84% | 35,462 psi | 58% | 2539 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 39,755 psi | 65% | 2552 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 43,004 psi | 71% | 2687 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 38,696 psi | 64% | 2546 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 35,447 psi | 58% | 2500 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,833 psi | 46% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,299 psi | 83% | 2690 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,442 psi | 78% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,030 psi | 66% | 2579 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,595 psi | 63% | 2589 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,288 psi | 58% | 2569 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 47,094 psi | 77% | 2638 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,931 psi | 70% | 2582 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 37,753 psi | 62% | 2523 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,816 psi | 72% | 2572 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,627 psi | 70% | 2552 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 51,605 psi | 85% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,886 psi | 67% | 2536 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,646 psi | 80% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,196 psi | 79% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,800 psi | 69% | 2500 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,405 psi | 61% | 2520 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 47,239 psi | 78% | 2635 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,021 psi | 77% | 2631 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,318 psi | 60% | 2510 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,708 psi | 59% | 2451 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,208 psi | 74% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,205 psi | 68% | 2552 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 37,840 psi | 62% | 2490 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 40,611 psi | 67% | 2552 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,647 psi | 52% | 2405 fps | 97.9% |
| Vihtavuori N560 | 85.1 gr | 90% | 44,295 psi | 73% | 2710 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 43,656 psi | 72% | 2687 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,277 psi | 66% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,279 psi | 69% | 2612 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,034 psi | 41% | 2313 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,335 psi | 66% | 2549 fps | 95.9% |
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 | 225gr | CutEdge MTH. Winchester StaBALL HD delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,930 fps. ADI AR 2225 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 225.0 gr projectile in 0.338" calls for a 1:11.0 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | CutEdge MTH 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.