Load Specifications
Load data in caliber .33 Nosler with .338 | 250gr | Nosler Partition RN bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 7828 SSC, Alliant Reloder-26 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 55,883 psi | 86% | 2500 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,724 psi | 87% | 2572 fps | 99.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,607 psi | 84% | 2621 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,246 psi | 87% | 2552 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,811 psi | 87% | 2661 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,652 psi | 87% | 2759 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 82% | 58,320 psi | 90% | 2621 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,115 psi | 86% | 2585 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,696 psi | 89% | 2707 fps | 99.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,201 psi | 85% | 2703 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,405 psi | 85% | 2700 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,014 psi | 88% | 2605 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,174 psi | 88% | 2625 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,566 psi | 89% | 2710 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,216 psi | 85% | 2684 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,927 psi | 88% | 2697 fps | 99.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 2700 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,285 psi | 79% | 2635 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,440 psi | 68% | 2572 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,737 psi | 84% | 2766 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,479 psi | 90% | 2648 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,632 psi | 76% | 2631 fps | 98.1% |
| Bofors RP3 | <<locked>> | 86% | 57,914 psi | 89% | 2621 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,128 psi | 83% | 2700 fps | 98.9% |
| Bofors RP7 | <<locked>> | 90% | 57,116 psi | 88% | 2615 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,222 psi | 68% | 2513 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 86% | 58,189 psi | 90% | 2641 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,332 psi | 85% | 2661 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 90% | 58,624 psi | 90% | 2674 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 98% | 55,361 psi | 85% | 2651 fps | 97.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,986 psi | 89% | 2687 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,856 psi | 89% | 2638 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,883 psi | 86% | 2621 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,613 psi | 67% | 2608 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 90% | 55,390 psi | 85% | 2697 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,477 psi | 56% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,420 psi | 87% | 2582 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,651 psi | 86% | 2569 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,088 psi | 89% | 2602 fps | 99.8% |
| IMR 4350 | <<locked>> | 94% | 58,044 psi | 89% | 2648 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,610 psi | 90% | 2638 fps | 99.8% |
| IMR 4831 | <<locked>> | 94% | 57,116 psi | 88% | 2651 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,653 psi | 90% | 2651 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,014 psi | 88% | 2638 fps | 97.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,634 psi | 81% | 2677 fps | 97.5% |
| Lovex S060 | <<locked>> | 82% | 57,043 psi | 88% | 2549 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,767 psi | 86% | 2559 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,274 psi | 85% | 2585 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 56,565 psi | 87% | 2625 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,353 psi | 70% | 2487 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 57,232 psi | 88% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,856 psi | 89% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,449 psi | 87% | 2612 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,274 psi | 85% | 2651 fps | 98.7% |
| Norma MRPᴾ | <<locked>> | 100% | 57,479 psi | 88% | 2779 fps | 99.9% |
| Norma URP | <<locked>> | 92% | 55,332 psi | 85% | 2644 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,363 psi | 88% | 2641 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,026 psi | 82% | 2697 fps | 98% |
| Ramshot Hunter | <<locked>> | 94% | 57,856 psi | 89% | 2700 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,239 psi | 73% | 2579 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 57% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,928 psi | 89% | 2628 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,363 psi | 90% | 2690 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 58,668 psi | 90% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,507 psi | 87% | 2684 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,998 psi | 85% | 2713 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,395 psi | 67% | 2602 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 84% | 57,696 psi | 89% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,044 psi | 89% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,796 psi | 86% | 2628 fps | 98% |
| Rottweil R 905 | <<locked>> | 98% | 56,144 psi | 86% | 2684 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 90% | 57,116 psi | 88% | 2615 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,274 psi | 85% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 55,767 psi | 86% | 2559 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,565 psi | 87% | 2625 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,782 psi | 86% | 2625 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,797 psi | 87% | 2598 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,928 psi | 89% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,813 psi | 90% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,624 psi | 90% | 2592 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,695 psi | 86% | 2677 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 57,609 psi | 89% | 2500 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,754 psi | 89% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,464 psi | 88% | 2625 fps | 97.6% |
| Somchem S365 | <<locked>> | 96% | 58,407 psi | 90% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,739 psi | 87% | 2657 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 82% | 58,479 psi | 90% | 2480 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,160 psi | 89% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,450 psi | 90% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,622 psi | 86% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,566 psi | 89% | 2638 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,576 psi | 81% | 2589 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 84% | 56,463 psi | 87% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,681 psi | 87% | 2648 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,203 psi | 88% | 2700 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,725 psi | 89% | 2772 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 46,050 psi | 71% | 2579 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,188 psi | 88% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,550 psi | 85% | 2664 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,238 psi | 71% | 2694 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,043 psi | 88% | 2608 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,985 psi | 88% | 2654 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 2495 | <<locked>> | 80% | 52,301 psi | 80% | 2457 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,908 psi | 77% | 2474 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 31,865 psi | 49% | 2221 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,559 psi | 76% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,913 psi | 58% | 2359 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 96% | 49,008 psi | 75% | 2641 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 54,969 psi | 85% | 2575 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,789 psi | 72% | 2448 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,160 psi | 60% | 2392 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 45,295 psi | 70% | 2539 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,576 psi | 79% | 2644 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,326 psi | 73% | 2470 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,488 psi | 78% | 2533 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,956 psi | 57% | 2369 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,698 psi | 64% | 2480 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,957 psi | 60% | 2392 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 38,914 psi | 60% | 2434 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,050 psi | 42% | 2152 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,560 psi | 47% | 2260 fps | 95.6% |
| Alliant Reloder-26 | 67 gr | 80% | 28,819 psi | 44% | 2254 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,723 psi | 84% | 2595 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 38,406 psi | 59% | 2425 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 47,688 psi | 73% | 2484 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 38,914 psi | 60% | 2434 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 41,843 psi | 64% | 2369 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 41,336 psi | 64% | 2457 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,834 psi | 74% | 2493 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 39,755 psi | 61% | 2402 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,801 psi | 66% | 2421 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 92% | 45,397 psi | 70% | 2493 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,543 psi | 73% | 2530 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,534 psi | 53% | 2270 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,359 psi | 81% | 2575 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,348 psi | 59% | 2490 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 38,696 psi | 60% | 2415 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 42% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,113 psi | 82% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,211 psi | 76% | 2477 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,343 psi | 79% | 2507 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 37,463 psi | 58% | 2306 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,207 psi | 66% | 2395 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 36,448 psi | 56% | 2316 fps | 98.8% |
| IMR 4895 | <<locked>> | 80% | 51,779 psi | 80% | 2556 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 44,512 psi | 68% | 2441 fps | 95% |
| IMR 7828 SSC | 73.5 gr | 94% | 43,236 psi | 67% | 2513 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 53,751 psi | 83% | 2507 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,400 psi | 76% | 2474 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,770 psi | 63% | 2352 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 39,044 psi | 60% | 2336 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 31,038 psi | 48% | 2205 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 53,679 psi | 83% | 2523 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,447 psi | 84% | 2520 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,835 psi | 77% | 2520 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,436 psi | 61% | 2382 fps | 95.3% |
| Norma MRP | <<locked>> | 86% | 35,679 psi | 55% | 2395 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,652 psi | 58% | 2356 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 80% | 49,980 psi | 77% | 2543 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 42,859 psi | 66% | 2520 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,434 psi | 56% | 2343 fps | 97.2% |
| Ramshot Magnum | <<locked>> | 94% | 38,014 psi | 58% | 2408 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 43% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,921 psi | 74% | 2480 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,607 psi | 84% | 2641 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,309 psi | 68% | 2523 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,652 psi | 58% | 2379 fps | 98.8% |
| ReloadSwiss RS 70 | 66.3 gr | 80% | 36,361 psi | 56% | 2382 fps | 98.3% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,215 psi | 54% | 2415 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 51,140 psi | 79% | 2480 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,846 psi | 69% | 2434 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,265 psi | 67% | 2425 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 37,826 psi | 58% | 2372 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 41,843 psi | 64% | 2369 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,770 psi | 63% | 2352 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 49,400 psi | 76% | 2474 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,044 psi | 60% | 2336 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,876 psi | 71% | 2484 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,330 psi | 82% | 2552 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,462 psi | 84% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,079 psi | 71% | 2339 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,885 psi | 61% | 2300 fps | 97.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,492 psi | 58% | 2365 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 54,114 psi | 83% | 2454 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,107 psi | 69% | 2431 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,137 psi | 73% | 2470 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,084 psi | 52% | 2316 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 36,114 psi | 56% | 2310 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 55,013 psi | 85% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,532 psi | 79% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,590 psi | 79% | 2457 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,062 psi | 66% | 2365 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,088 psi | 60% | 2352 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 90% | 37,927 psi | 58% | 2343 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,763 psi | 77% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,406 psi | 59% | 2352 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,907 psi | 46% | 2221 fps | 97.5% |
| Vihtavuori N560 | <<locked>> | 92% | 44,077 psi | 68% | 2546 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 43,033 psi | 66% | 2523 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,014 psi | 58% | 2323 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 39,943 psi | 61% | 2405 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,888 psi | 37% | 2129 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,476 psi | 82% | 2559 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,495 psi | 62% | 2395 fps | 95.8% |
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 109 powders for .33 Nosler loaded with the .338 | 250gr | Nosler Partition RN. Norma MRP delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,779 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. IMR 7828 SSC, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for .33 Nosler with the .338 | 250gr | Nosler Partition RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.