Load Specifications
Load data in caliber .358 Norma Mag. with .358 | 225gr | Nosler Partition bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR and Hodgdon CFE223.
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 2015 | <<locked>> | 90% | 56,608 psi | 89% | 2690 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 56,797 psi | 89% | 2785 fps | 99.1% |
| Accurate 2460 | <<locked>> | 86% | 55,187 psi | 86% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 57,392 psi | 90% | 2749 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,637 psi | 89% | 2772 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 56,927 psi | 89% | 2789 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2690 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 84% | 56,362 psi | 88% | 2641 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 56,797 psi | 89% | 2664 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,550 psi | 87% | 2779 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 98% | 56,420 psi | 88% | 2772 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 84% | 57,305 psi | 90% | 2759 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,940 psi | 86% | 2736 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 54,665 psi | 86% | 2720 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,420 psi | 88% | 2838 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,071 psi | 86% | 2884 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 55,622 psi | 87% | 2792 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,536 psi | 89% | 2700 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 56,521 psi | 89% | 2812 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,658 psi | 72% | 2697 fps | 97.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2848 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,390 psi | 87% | 2638 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,405 psi | 87% | 2792 fps | 98.8% |
| Bofors RP3 | <<locked>> | 98% | 56,144 psi | 88% | 2808 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 57,101 psi | 89% | 2723 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 57,188 psi | 90% | 2815 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,477 psi | 87% | 2854 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 55,753 psi | 87% | 2740 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 56,811 psi | 89% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,070 psi | 85% | 2766 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 92% | 56,101 psi | 88% | 2789 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,698 psi | 65% | 2582 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,650 psi | 86% | 2818 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 54% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 57,566 psi | 90% | 2792 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 55,288 psi | 87% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 55,854 psi | 88% | 2756 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,971 psi | 89% | 2736 fps | 96.4% |
| IMR 4198 | <<locked>> | 86% | 56,710 psi | 89% | 2657 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2749 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,627 psi | 68% | 2635 fps | 96.7% |
| IMR 4895 | <<locked>> | 94% | 54,447 psi | 85% | 2795 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 90% | 54,940 psi | 86% | 2736 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 55,143 psi | 86% | 2726 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 54,708 psi | 86% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 55,782 psi | 87% | 2710 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 55,361 psi | 87% | 2756 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2687 fps | 96.7% |
| Norma 200 | <<locked>> | 82% | 56,333 psi | 88% | 2671 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,375 psi | 85% | 2730 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 54,578 psi | 86% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 96% | 55,608 psi | 87% | 2799 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2687 fps | 97% |
| Ramshot Big Game | <<locked>> | 96% | 56,289 psi | 88% | 2828 fps | 99.5% |
| Ramshot TAC | <<locked>> | 90% | 55,579 psi | 87% | 2749 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,418 psi | 85% | 2766 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,391 psi | 88% | 2743 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 55% | 1686 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,607 psi | 86% | 2723 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 54,911 psi | 86% | 2746 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 56,666 psi | 89% | 2881 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2707 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,731 psi | 73% | 2723 fps | 96% |
| Rottweil R 901 | <<locked>> | 90% | 55,419 psi | 87% | 2717 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,563 psi | 86% | 2720 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 2795 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2687 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 54,708 psi | 86% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,361 psi | 87% | 2756 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,563 psi | 86% | 2694 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,797 psi | 89% | 2398 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 57,522 psi | 90% | 2769 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,070 psi | 85% | 2805 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 57,464 psi | 90% | 2720 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 57,116 psi | 90% | 2776 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 57,493 psi | 90% | 2802 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,463 psi | 88% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,130 psi | 88% | 2674 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 56,231 psi | 88% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,535 psi | 87% | 2677 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,710 psi | 89% | 2772 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2792 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,756 psi | 64% | 2635 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 88% | 56,463 psi | 88% | 2648 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,333 psi | 88% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 57,014 psi | 89% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,172 psi | 86% | 2713 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2730 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2687 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 90% | 55,579 psi | 87% | 2740 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 96% | 56,739 psi | 89% | 2756 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,181 psi | 74% | 2690 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2677 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 54,462 psi | 85% | 2779 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 57,116 psi | 90% | 2808 fps | 99.8% |
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 2015 | <<locked>> | 80% | 41,597 psi | 65% | 2470 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,069 psi | 83% | 2730 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 45,136 psi | 71% | 2569 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 33,997 psi | 53% | 2382 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,437 psi | 63% | 2523 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 32,155 psi | 50% | 2362 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 39,595 psi | 62% | 2579 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 50,024 psi | 78% | 2552 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,415 psi | 79% | 2572 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,232 psi | 60% | 2474 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 36,927 psi | 58% | 2428 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 49,937 psi | 78% | 2661 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,205 psi | 63% | 2490 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 39,117 psi | 61% | 2493 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,470 psi | 73% | 2680 fps | 98.9% |
| Alliant Power Pro 2000-MR | 63.5 gr | 84% | 39,262 psi | 62% | 2585 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,430 psi | 49% | 2343 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,123 psi | 74% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,347 psi | 57% | 2454 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,379 psi | 63% | 2589 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,433 psi | 56% | 2507 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,921 psi | 77% | 2549 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,537 psi | 62% | 2520 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 30,821 psi | 48% | 2339 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,221 psi | 66% | 2487 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,261 psi | 60% | 2500 fps | 98.3% |
| Hodgdon CFE223 | 61.9 gr | 80% | 41,930 psi | 66% | 2625 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 80% | 45,745 psi | 72% | 2595 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,514 psi | 73% | 2615 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 41,597 psi | 65% | 2552 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,464 psi | 60% | 2484 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,635 psi | 54% | 2434 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,330 psi | 54% | 2444 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 40% | 1470 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,028 psi | 58% | 2441 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 37,376 psi | 59% | 2493 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,318 psi | 57% | 2408 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 92% | 53,316 psi | 84% | 2684 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 47,688 psi | 75% | 2536 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,359 psi | 82% | 2697 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 38,363 psi | 60% | 2536 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 34,911 psi | 55% | 2434 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 40,205 psi | 63% | 2490 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 44,918 psi | 70% | 2572 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 36,506 psi | 57% | 2454 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 38,870 psi | 61% | 2421 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 33,721 psi | 53% | 2365 fps | 96.5% |
| Lovex S065 | <<locked>> | 96% | 45,136 psi | 71% | 2589 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 52,953 psi | 83% | 2625 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,376 psi | 59% | 2431 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 37,362 psi | 59% | 2448 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 35,737 psi | 56% | 2444 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 40,277 psi | 63% | 2582 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 82% | 35,201 psi | 55% | 2451 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 45,716 psi | 72% | 2589 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,160 psi | 61% | 2503 fps | 96.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,497 psi | 68% | 2533 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 41% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,107 psi | 71% | 2575 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,167 psi | 75% | 2641 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 37,565 psi | 59% | 2543 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,095 psi | 46% | 2346 fps | 95.4% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 39,740 psi | 62% | 2598 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 43,743 psi | 69% | 2664 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 41,133 psi | 64% | 2484 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 35,549 psi | 56% | 2385 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 33,127 psi | 52% | 2388 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,136 psi | 71% | 2589 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,506 psi | 57% | 2454 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 33,721 psi | 53% | 2365 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,732 psi | 75% | 2589 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,896 psi | 84% | 2365 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,473 psi | 79% | 2671 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,637 psi | 57% | 2487 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,819 psi | 75% | 2585 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 43,439 psi | 68% | 2556 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,666 psi | 57% | 2438 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,146 psi | 61% | 2405 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,111 psi | 50% | 2274 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 43,033 psi | 67% | 2562 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 38,522 psi | 60% | 2408 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 37,681 psi | 59% | 2454 fps | 96.2% |
| Somchem S355 | <<locked>> | 84% | 34,214 psi | 54% | 2398 fps | 95.7% |
| Somchem S365 | <<locked>> | 90% | 29,675 psi | 47% | 2365 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 44,353 psi | 70% | 2480 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,233 psi | 61% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,519 psi | 54% | 2385 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,476 psi | 56% | 2388 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,601 psi | 45% | 2244 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 94% | 39,740 psi | 62% | 2533 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 40,089 psi | 63% | 2484 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,011 psi | 53% | 2372 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 41,452 psi | 65% | 2585 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,402 psi | 52% | 2362 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,914 psi | 61% | 2520 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,882 psi | 56% | 2441 fps | 96.4% |
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 96 powders for .358 Norma Mag. loaded with the .358 | 225gr | Nosler Partition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,910 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 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 225.0 gr projectile in 0.358" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 4350, Alliant Power Pro 2000-MR, Hodgdon CFE223 rank at the top here: for .358 Norma Mag. with the .358 | 225gr | Nosler Partition 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.