Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 225gr | CutEdge ER Raptor bullet and 81 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 Alliant Reloder-26.
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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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 2700 | <<locked>> | 82% | 54,781 psi | 90% | 2717 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 53,272 psi | 87% | 2762 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 53,838 psi | 88% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 51,459 psi | 84% | 2753 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 51,895 psi | 85% | 2844 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 54,273 psi | 89% | 2730 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,779 psi | 87% | 2802 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 53,998 psi | 89% | 2854 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,840 psi | 60% | 2569 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 51,648 psi | 85% | 2700 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,678 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,809 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,185 psi | 86% | 2789 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,214 psi | 87% | 2848 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 2828 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,673 psi | 77% | 2769 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,157 psi | 89% | 2913 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,199 psi | 86% | 2831 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 52,257 psi | 86% | 2717 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,214 psi | 87% | 2848 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 51,953 psi | 85% | 2710 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,195 psi | 76% | 2710 fps | 96.8% |
| Hodgdon H380 | <<locked>> | 82% | 52,634 psi | 86% | 2733 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,896 psi | 88% | 2808 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,519 psi | 88% | 2766 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 54,186 psi | 89% | 2799 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,968 psi | 87% | 2779 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,939 psi | 87% | 2736 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,600 psi | 75% | 2808 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 88% | 54,070 psi | 89% | 2841 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,506 psi | 60% | 1729 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,693 psi | 88% | 2713 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,156 psi | 87% | 2746 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,461 psi | 88% | 2733 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 52,257 psi | 86% | 2749 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,243 psi | 86% | 2733 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 98% | 51,459 psi | 84% | 2825 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 53,925 psi | 89% | 2707 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,577 psi | 88% | 2730 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,911 psi | 90% | 2772 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,181 psi | 77% | 2671 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 54,505 psi | 89% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,751 psi | 88% | 2795 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 52,837 psi | 87% | 2871 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 53,954 psi | 89% | 2792 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,909 psi | 85% | 2841 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 52,881 psi | 87% | 2795 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,748 psi | 82% | 2779 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,202 psi | 61% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,489 psi | 86% | 2717 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,142 psi | 87% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 51,459 psi | 84% | 2776 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,766 psi | 88% | 2858 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,730 psi | 75% | 2805 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 52,504 psi | 86% | 2713 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,447 psi | 89% | 2776 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 51,401 psi | 84% | 2776 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 51,953 psi | 85% | 2710 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,577 psi | 88% | 2730 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,925 psi | 89% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,911 psi | 90% | 2772 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,157 psi | 89% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,577 psi | 88% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,113 psi | 87% | 2687 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,650 psi | 90% | 2828 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 52,533 psi | 86% | 2710 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,460 psi | 86% | 2713 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 53,577 psi | 88% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 51,909 psi | 85% | 2753 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 53,708 psi | 88% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,446 psi | 86% | 2736 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 2782 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 54,592 psi | 90% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,085 psi | 90% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,591 psi | 86% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,084 psi | 87% | 2864 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,428 psi | 80% | 2772 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 51,909 psi | 85% | 2700 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,896 psi | 88% | 2808 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,705 psi | 82% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,909 psi | 85% | 2743 fps | 98.4% |
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 2700 | <<locked>> | 80% | 51,155 psi | 84% | 2661 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 32,677 psi | 54% | 2382 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 50,531 psi | 83% | 2644 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,957 psi | 64% | 2533 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 48,269 psi | 79% | 2782 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 47,935 psi | 79% | 2631 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,321 psi | 66% | 2572 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 43,932 psi | 72% | 2671 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 34,490 psi | 57% | 2510 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,486 psi | 80% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,898 psi | 62% | 2546 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,265 psi | 71% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,219 psi | 66% | 2569 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,840 psi | 62% | 2559 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,586 psi | 45% | 2306 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,430 psi | 52% | 2425 fps | 96% |
| Alliant Reloder-26 | 76.1 gr | 80% | 29,631 psi | 49% | 2415 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 39,987 psi | 66% | 2605 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,805 psi | 80% | 2664 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 37,840 psi | 62% | 2559 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,728 psi | 70% | 2546 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 43,105 psi | 71% | 2648 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,226 psi | 81% | 2680 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,002 psi | 67% | 2582 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,903 psi | 72% | 2602 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 47,195 psi | 77% | 2684 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,137 psi | 76% | 2664 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,331 psi | 58% | 2434 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,391 psi | 61% | 2618 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 39,929 psi | 66% | 2592 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 45% | 1542 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,415 psi | 83% | 2664 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,522 psi | 63% | 2480 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,338 psi | 73% | 2579 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,376 psi | 61% | 2487 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,050 psi | 76% | 2628 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 44,962 psi | 74% | 2707 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 50,502 psi | 83% | 2657 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,669 psi | 68% | 2526 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,943 psi | 66% | 2510 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,792 psi | 52% | 2359 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 51,213 psi | 84% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,785 psi | 67% | 2562 fps | 95.6% |
| Norma MRP | 77.5 gr | 84% | 34,389 psi | 56% | 2507 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,725 psi | 64% | 2530 fps | 99% |
| Ramshot Grand | <<locked>> | 92% | 41,713 psi | 68% | 2651 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 37,652 psi | 62% | 2520 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 36,970 psi | 61% | 2533 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 46% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,211 psi | 81% | 2664 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,021 psi | 76% | 2713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,754 psi | 64% | 2549 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,623 psi | 62% | 2562 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,287 psi | 56% | 2536 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 45,992 psi | 76% | 2615 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,701 psi | 73% | 2608 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 39,247 psi | 64% | 2549 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,728 psi | 70% | 2546 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,669 psi | 68% | 2526 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,502 psi | 83% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,943 psi | 66% | 2510 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,427 psi | 78% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,152 psi | 77% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,785 psi | 67% | 2474 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,885 psi | 64% | 2546 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,180 psi | 76% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,774 psi | 75% | 2602 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 35,259 psi | 58% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,173 psi | 61% | 2480 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 44,193 psi | 73% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,248 psi | 66% | 2530 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,651 psi | 60% | 2461 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,198 psi | 84% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,581 psi | 65% | 2530 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,676 psi | 50% | 2379 fps | 97.5% |
| Vihtavuori N560 | 84.9 gr | 92% | 46,108 psi | 76% | 2740 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 45,165 psi | 74% | 2713 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,204 psi | 64% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,162 psi | 68% | 2585 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,294 psi | 40% | 2277 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,160 psi | 64% | 2516 fps | 95.3% |
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 81 powders for .338 Lapua Mag. loaded with the .338 | 225gr | CutEdge ER Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,913 fps. ADI AR 2225 gives the best case fill at 100 %, and 81 of the 81 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 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .338 Lapua Mag. with the .338 | 225gr | CutEdge ER Raptor 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.