Load Specifications
Load data in caliber .338 Norma Mag. with .338 | 254gr | CutEdge MTAC bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 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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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% | 57,508 psi | 90% | 2595 fps | 99.9% |
| Accurate 3100 | <<locked>> | 98% | 56,898 psi | 89% | 2651 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,942 psi | 89% | 2559 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,984 psi | 86% | 2635 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,737 psi | 86% | 2743 fps | 99% |
| Accurate MAGPRO | <<locked>> | 96% | 55,477 psi | 87% | 2743 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 84% | 57,072 psi | 89% | 2602 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,898 psi | 88% | 2687 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 98% | 57,392 psi | 90% | 2746 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,643 psi | 70% | 2533 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,407 psi | 62% | 2497 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,188 psi | 88% | 2687 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,188 psi | 88% | 2687 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,188 psi | 88% | 2687 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,534 psi | 85% | 2572 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,144 psi | 88% | 2687 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,246 psi | 90% | 2700 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,463 psi | 87% | 2677 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,884 psi | 89% | 2740 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2661 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,215 psi | 85% | 2743 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,898 psi | 88% | 2657 fps | 96.3% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2723 fps | 99.6% |
| Bofors RP3 | <<locked>> | 82% | 55,274 psi | 87% | 2585 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,672 psi | 72% | 2598 fps | 97.8% |
| Bofors RP5 | <<locked>> | 98% | 56,884 psi | 89% | 2740 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 54,563 psi | 86% | 2589 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 2618 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 55,579 psi | 87% | 2608 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,014 psi | 89% | 2687 fps | 100% |
| Hodgdon H4350 | <<locked>> | 86% | 56,521 psi | 89% | 2651 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 96% | 57,493 psi | 90% | 2690 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,376 psi | 88% | 2674 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,260 psi | 88% | 2612 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2720 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 88% | 57,595 psi | 90% | 2726 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 58% | 1617 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,376 psi | 88% | 2582 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,057 psi | 88% | 2625 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,246 psi | 88% | 2612 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 55,448 psi | 87% | 2628 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,969 psi | 86% | 2621 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 98% | 54,853 psi | 86% | 2720 fps | 98.9% |
| Lovex S062 | <<locked>> | 82% | 56,695 psi | 89% | 2572 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,391 psi | 88% | 2605 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,563 psi | 86% | 2605 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,633 psi | 79% | 2566 fps | 100% |
| Norma 203B | <<locked>> | 82% | 57,580 psi | 90% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,985 psi | 89% | 2677 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 34,737 psi | 54% | 2421 fps | 96.6% |
| Norma MRP | <<locked>> | 96% | 56,623 psi | 89% | 2759 fps | 100% |
| Norma URP | <<locked>> | 90% | 57,203 psi | 90% | 2667 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,593 psi | 87% | 2740 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 90% | 56,159 psi | 88% | 2677 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2677 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,419 psi | 87% | 2598 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,985 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,071 psi | 86% | 2661 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,392 psi | 90% | 2740 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,037 psi | 77% | 2717 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 55,564 psi | 87% | 2585 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,348 psi | 90% | 2657 fps | 99% |
| Rottweil R 905 | <<locked>> | 94% | 54,824 psi | 86% | 2667 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,563 psi | 86% | 2589 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,391 psi | 88% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,695 psi | 89% | 2572 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,563 psi | 86% | 2605 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,290 psi | 90% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,115 psi | 88% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,811 psi | 87% | 2566 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,375 psi | 85% | 2664 fps | 99.5% |
| Somchem S355 | <<locked>> | 84% | 55,361 psi | 87% | 2582 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,376 psi | 87% | 2605 fps | 98.2% |
| Somchem S365 | <<locked>> | 92% | 57,203 psi | 90% | 2667 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,100 psi | 86% | 2638 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 86% | 56,724 psi | 89% | 2556 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,680 psi | 87% | 2615 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,737 psi | 86% | 2621 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 82% | 57,392 psi | 90% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,694 psi | 86% | 2618 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,405 psi | 88% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,623 psi | 89% | 2756 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,069 psi | 82% | 2677 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,201 psi | 87% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,217 psi | 90% | 2690 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,679 psi | 86% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,201 psi | 87% | 2635 fps | 99.5% |
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% | 53,795 psi | 84% | 2543 fps | 99.6% |
| Accurate 3100 | <<locked>> | 80% | 30,574 psi | 48% | 2195 fps | 96.4% |
| Accurate 4064 | <<locked>> | 80% | 53,577 psi | 84% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,684 psi | 65% | 2431 fps | 99.9% |
| Accurate High Country | 74.7 gr | 84% | 38,348 psi | 60% | 2454 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 90% | 44,802 psi | 70% | 2569 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,415 psi | 79% | 2510 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,114 psi | 55% | 2316 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 40,857 psi | 64% | 2464 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 38,986 psi | 61% | 2421 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 94% | 32,358 psi | 51% | 2326 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,360 psi | 55% | 2320 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,360 psi | 55% | 2320 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,360 psi | 55% | 2320 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,111 psi | 80% | 2526 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,364 psi | 63% | 2441 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,311 psi | 73% | 2549 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,056 psi | 55% | 2316 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,230 psi | 55% | 2359 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,602 psi | 46% | 2228 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,601 psi | 43% | 2185 fps | 95.4% |
| Alliant Reloder-26 | 73.3 gr | 80% | 31,923 psi | 50% | 2343 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 52,533 psi | 82% | 2602 fps | 95.5% |
| Bofors RP15 | <<locked>> | 86% | 35,070 psi | 55% | 2356 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 51,764 psi | 81% | 2539 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 37,202 psi | 58% | 2434 fps | 95.3% |
| Bofors RP5 | <<locked>> | 84% | 35,230 psi | 55% | 2359 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,107 psi | 71% | 2441 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 37,289 psi | 58% | 2388 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 51,895 psi | 81% | 2559 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,569 psi | 68% | 2477 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 46,470 psi | 73% | 2493 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 88% | 43,758 psi | 69% | 2474 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,902 psi | 67% | 2457 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,811 psi | 59% | 2336 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 34,998 psi | 55% | 2425 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 42,801 psi | 67% | 2500 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,528 psi | 43% | 1444 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,069 psi | 83% | 2536 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,741 psi | 64% | 2379 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,543 psi | 73% | 2464 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 39,842 psi | 62% | 2385 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,801 psi | 67% | 2421 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 39,117 psi | 61% | 2444 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 53,200 psi | 83% | 2526 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,034 psi | 69% | 2418 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 42,206 psi | 66% | 2405 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 28,050 psi | 44% | 2133 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 53,998 psi | 85% | 2582 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,437 psi | 63% | 2408 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 32,474 psi | 51% | 2362 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 32,010 psi | 50% | 2310 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,220 psi | 65% | 2425 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 38,667 psi | 61% | 2448 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 40,118 psi | 63% | 2418 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 88% | 34,185 psi | 54% | 2333 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1480 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,851 psi | 81% | 2549 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,240 psi | 77% | 2589 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,553 psi | 65% | 2451 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,074 psi | 63% | 2467 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 31,821 psi | 50% | 2343 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 48,689 psi | 76% | 2493 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,015 psi | 61% | 2356 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 34,069 psi | 53% | 2297 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,107 psi | 71% | 2441 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,034 psi | 69% | 2418 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 53,200 psi | 83% | 2526 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,206 psi | 66% | 2405 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,227 psi | 79% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,414 psi | 77% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,033 psi | 67% | 2369 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,172 psi | 57% | 2343 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 48,863 psi | 77% | 2490 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,279 psi | 66% | 2395 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 37,956 psi | 59% | 2385 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,650 psi | 54% | 2283 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 46,659 psi | 73% | 2421 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,772 psi | 67% | 2421 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,287 psi | 54% | 2270 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 53,708 psi | 84% | 2507 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,959 psi | 66% | 2421 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,996 psi | 52% | 2290 fps | 99.1% |
| Vihtavuori N560 | 78.2 gr | 88% | 42,859 psi | 67% | 2530 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 92% | 39,450 psi | 62% | 2454 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,611 psi | 65% | 2385 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,758 psi | 69% | 2480 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,063 psi | 41% | 2224 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,318 psi | 57% | 2320 fps | 95.6% |
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 89 powders for .338 Norma Mag. loaded with the .338 | 254gr | CutEdge MTAC. Winchester StaBALL HD delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,782 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 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 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-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. Accurate High Country, Alliant Reloder-26, Vihtavuori N560 rank at the top here: for .338 Norma Mag. with the .338 | 254gr | 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.