Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 252gr | CutEdge MTH bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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.
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 2700 | <<locked>> | 84% | 54,897 psi | 86% | 2562 fps | 99.7% |
| Accurate 3100 | <<locked>> | 98% | 56,579 psi | 89% | 2657 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,710 psi | 89% | 2569 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,505 psi | 85% | 2638 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 55,854 psi | 88% | 2749 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 56,666 psi | 89% | 2605 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,651 psi | 87% | 2694 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 98% | 57,116 psi | 90% | 2749 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,251 psi | 69% | 2536 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,044 psi | 61% | 2497 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,302 psi | 85% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,666 psi | 87% | 2690 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,985 psi | 89% | 2707 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,216 psi | 87% | 2684 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,579 psi | 89% | 2746 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2710 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2667 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,867 psi | 84% | 2749 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,680 psi | 87% | 2661 fps | 96.2% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 2723 fps | 99.5% |
| Bofors RP3 | <<locked>> | 82% | 55,027 psi | 86% | 2595 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,397 psi | 71% | 2602 fps | 97.7% |
| Bofors RP5 | <<locked>> | 98% | 56,579 psi | 89% | 2746 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 54,346 psi | 85% | 2595 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,878 psi | 77% | 2621 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 82% | 55,172 psi | 86% | 2615 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,768 psi | 89% | 2694 fps | 100% |
| Hodgdon H4350 | <<locked>> | 86% | 56,072 psi | 88% | 2654 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 96% | 57,203 psi | 90% | 2694 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,072 psi | 88% | 2677 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,999 psi | 88% | 2618 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,428 psi | 76% | 2720 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 88% | 57,305 psi | 90% | 2733 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1621 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,217 psi | 88% | 2589 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,651 psi | 87% | 2631 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,043 psi | 88% | 2618 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 55,013 psi | 86% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,766 psi | 86% | 2628 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 98% | 54,520 psi | 85% | 2726 fps | 98.8% |
| Lovex S062 | <<locked>> | 82% | 56,318 psi | 88% | 2579 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,159 psi | 88% | 2612 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 57,682 psi | 90% | 2657 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2569 fps | 99.9% |
| Norma 203B | <<locked>> | 82% | 57,145 psi | 90% | 2635 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,536 psi | 89% | 2684 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 34,534 psi | 54% | 2425 fps | 96.4% |
| Norma MRP | <<locked>> | 96% | 56,246 psi | 88% | 2766 fps | 100% |
| Norma URP | <<locked>> | 90% | 56,971 psi | 89% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,230 psi | 87% | 2746 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,709 psi | 87% | 2680 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,127 psi | 83% | 2684 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,998 psi | 86% | 2602 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,434 psi | 88% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,607 psi | 86% | 2664 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,072 psi | 89% | 2746 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,733 psi | 76% | 2720 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 55,376 psi | 87% | 2595 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,072 psi | 89% | 2664 fps | 99% |
| Rottweil R 905 | <<locked>> | 94% | 54,346 psi | 85% | 2671 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,346 psi | 85% | 2595 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,159 psi | 88% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,318 psi | 88% | 2579 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,682 psi | 90% | 2657 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,058 psi | 89% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,709 psi | 87% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,637 psi | 87% | 2572 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,624 psi | 90% | 2717 fps | 99.7% |
| Somchem S355 | <<locked>> | 84% | 55,143 psi | 86% | 2589 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,143 psi | 86% | 2612 fps | 98.1% |
| Somchem S365 | <<locked>> | 92% | 56,913 psi | 89% | 2674 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,853 psi | 86% | 2644 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 86% | 56,318 psi | 88% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,259 psi | 87% | 2618 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,476 psi | 85% | 2628 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 82% | 57,000 psi | 89% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,447 psi | 85% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,072 psi | 88% | 2690 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,318 psi | 88% | 2762 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2680 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,737 psi | 86% | 2582 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,985 psi | 89% | 2697 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,230 psi | 85% | 2789 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,940 psi | 86% | 2641 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 2700 | <<locked>> | 80% | 48,182 psi | 76% | 2461 fps | 99% |
| Accurate 3100 | <<locked>> | 80% | 30,313 psi | 48% | 2198 fps | 96.2% |
| Accurate 4064 | <<locked>> | 80% | 53,171 psi | 83% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,321 psi | 65% | 2434 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 92% | 45,150 psi | 71% | 2579 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,096 psi | 79% | 2516 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,246 psi | 58% | 2372 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 88% | 40,698 psi | 64% | 2470 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 41,495 psi | 65% | 2484 fps | 96% |
| ADI AR 2225 | <<locked>> | 94% | 32,198 psi | 50% | 2329 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,908 psi | 80% | 2533 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,016 psi | 63% | 2444 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,108 psi | 72% | 2559 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,144 psi | 58% | 2369 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,070 psi | 55% | 2365 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,327 psi | 46% | 2228 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,354 psi | 43% | 2188 fps | 95.1% |
| Alliant Reloder-26 | 73.3 gr | 80% | 31,604 psi | 50% | 2343 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 52,301 psi | 82% | 2608 fps | 95.4% |
| Bofors RP15 | <<locked>> | 88% | 37,144 psi | 58% | 2408 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,547 psi | 81% | 2546 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 36,985 psi | 58% | 2438 fps | 95.1% |
| Bofors RP5 | <<locked>> | 84% | 35,070 psi | 55% | 2365 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 44,962 psi | 70% | 2448 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 37,130 psi | 58% | 2395 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,677 psi | 81% | 2566 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,366 psi | 68% | 2484 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 46,282 psi | 73% | 2500 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 88% | 43,395 psi | 68% | 2474 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,699 psi | 67% | 2464 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,637 psi | 59% | 2343 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 34,838 psi | 55% | 2428 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 42,409 psi | 66% | 2503 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 1450 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,678 psi | 83% | 2543 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,422 psi | 63% | 2382 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,398 psi | 73% | 2470 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 39,668 psi | 62% | 2392 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,467 psi | 67% | 2425 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 41,640 psi | 65% | 2503 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 53,026 psi | 83% | 2536 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,729 psi | 69% | 2421 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 42,047 psi | 66% | 2411 fps | 98.7% |
| Lovex S071 | <<locked>> | 84% | 29,704 psi | 47% | 2182 fps | 95.9% |
| Norma 203B | <<locked>> | 80% | 53,635 psi | 84% | 2585 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,103 psi | 63% | 2411 fps | 96.6% |
| Norma 217 | <<locked>> | 98% | 32,285 psi | 51% | 2365 fps | 95.3% |
| Norma MRP | 71.2 gr | 80% | 31,836 psi | 50% | 2313 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 41,031 psi | 64% | 2428 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 38,319 psi | 60% | 2448 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,769 psi | 62% | 2421 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 33,982 psi | 53% | 2336 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 44% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,634 psi | 81% | 2556 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,979 psi | 77% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,336 psi | 65% | 2457 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,856 psi | 62% | 2470 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 31,517 psi | 49% | 2339 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,515 psi | 76% | 2500 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 38,682 psi | 61% | 2356 fps | 95% |
| Rottweil R 905 | <<locked>> | 82% | 36,332 psi | 57% | 2352 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 44,962 psi | 70% | 2448 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,729 psi | 69% | 2421 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 53,026 psi | 83% | 2536 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,047 psi | 66% | 2411 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,821 psi | 78% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,284 psi | 77% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,859 psi | 67% | 2375 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,998 psi | 56% | 2349 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,472 psi | 76% | 2493 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,105 psi | 66% | 2398 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,594 psi | 59% | 2388 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,490 psi | 54% | 2287 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 46,470 psi | 73% | 2428 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,395 psi | 66% | 2425 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 33,982 psi | 53% | 2270 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,548 psi | 84% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,785 psi | 65% | 2428 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,837 psi | 51% | 2297 fps | 99% |
| Vihtavuori N560 | 78.3 gr | 88% | 42,612 psi | 67% | 2533 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 39,233 psi | 61% | 2457 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,437 psi | 65% | 2395 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,540 psi | 68% | 2487 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,817 psi | 40% | 2224 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,143 psi | 57% | 2323 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 91 powders for .338 Norma Mag. loaded with the .338 | 252gr | CutEdge MTH. Winchester StaBALL HD delivers the highest muzzle velocity at 2,789 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,789 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 252.0 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-23 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, Vihtavuori N560, Norma MRP rank at the top here: for .338 Norma Mag. with the .338 | 252gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 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.