Load Specifications
Load data in caliber .358 Norma Mag. with .358 | 225gr | NorthFork Bonded Core bullet and 97 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, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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 2015 | <<locked>> | 90% | 57,043 psi | 89% | 2700 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,276 psi | 90% | 2799 fps | 99.2% |
| Accurate 2460 | <<locked>> | 86% | 55,550 psi | 87% | 2726 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,418 psi | 85% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 57,246 psi | 90% | 2785 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 57,609 psi | 90% | 2802 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,992 psi | 72% | 2700 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 84% | 56,782 psi | 89% | 2648 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,217 psi | 90% | 2674 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,217 psi | 90% | 2674 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 55,956 psi | 88% | 2785 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 98% | 56,956 psi | 89% | 2782 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 84% | 57,740 psi | 90% | 2769 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,347 psi | 87% | 2746 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 55,143 psi | 86% | 2730 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 56,884 psi | 89% | 2848 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,303 psi | 87% | 2894 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,202 psi | 88% | 2802 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 56,797 psi | 89% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 57,159 psi | 90% | 2825 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,079 psi | 72% | 2710 fps | 97.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,098 psi | 83% | 2858 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 55,927 psi | 88% | 2648 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,695 psi | 87% | 2799 fps | 98.9% |
| Bofors RP3 | <<locked>> | 98% | 56,739 psi | 89% | 2818 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 57,493 psi | 90% | 2733 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,114 psi | 85% | 2776 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 55,825 psi | 87% | 2864 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 56,188 psi | 88% | 2749 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 57,174 psi | 90% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,665 psi | 86% | 2776 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 92% | 56,420 psi | 88% | 2799 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,134 psi | 66% | 2595 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 54,998 psi | 86% | 2828 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 54% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,447 psi | 85% | 2753 fps | 99.6% |
| IMR 3031 | <<locked>> | 92% | 55,724 psi | 87% | 2785 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,463 psi | 88% | 2766 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,246 psi | 90% | 2746 fps | 96.5% |
| IMR 4198 | <<locked>> | 86% | 57,261 psi | 90% | 2667 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,115 psi | 88% | 2759 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,150 psi | 69% | 2651 fps | 96.9% |
| IMR 4895 | <<locked>> | 94% | 54,839 psi | 86% | 2805 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 90% | 55,347 psi | 87% | 2746 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 55,506 psi | 87% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,056 psi | 86% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,115 psi | 88% | 2720 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 55,709 psi | 87% | 2762 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,547 psi | 81% | 2700 fps | 96.9% |
| Norma 200 | <<locked>> | 82% | 56,840 psi | 89% | 2680 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,723 psi | 86% | 2736 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 54,940 psi | 86% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,202 psi | 88% | 2812 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 46,238 psi | 72% | 2697 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 96% | 56,826 psi | 89% | 2838 fps | 99.6% |
| Ramshot TAC | <<locked>> | 90% | 55,869 psi | 88% | 2759 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 90% | 54,984 psi | 86% | 2779 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 56,724 psi | 89% | 2749 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,070 psi | 55% | 1693 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,984 psi | 86% | 2733 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,172 psi | 86% | 2756 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 57,043 psi | 89% | 2887 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,021 psi | 72% | 2720 fps | 96.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,137 psi | 74% | 2736 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 90% | 55,840 psi | 88% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,969 psi | 86% | 2733 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2805 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,547 psi | 81% | 2700 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,056 psi | 86% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,709 psi | 87% | 2762 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 54,911 psi | 86% | 2703 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,855 psi | 89% | 2402 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,273 psi | 85% | 2730 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,621 psi | 86% | 2815 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,418 psi | 85% | 2680 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 57,653 psi | 90% | 2785 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,404 psi | 85% | 2759 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 56,855 psi | 89% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,434 psi | 88% | 2680 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 56,550 psi | 89% | 2782 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 55,869 psi | 88% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 56,971 psi | 89% | 2779 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2805 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2648 fps | 99% |
| Vihtavuori N130 | <<locked>> | 88% | 56,666 psi | 89% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,724 psi | 89% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 57,493 psi | 90% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,492 psi | 87% | 2720 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2740 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 2697 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 90% | 55,999 psi | 88% | 2746 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 96% | 57,319 psi | 90% | 2766 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2703 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,922 psi | 78% | 2690 fps | 99.3% |
| Winchester 748 | <<locked>> | 90% | 55,100 psi | 86% | 2792 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 57,711 psi | 90% | 2822 fps | 99.9% |
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% | 41,814 psi | 66% | 2477 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,476 psi | 84% | 2743 fps | 98.8% |
| Accurate 2460 | <<locked>> | 80% | 45,513 psi | 71% | 2579 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,432 psi | 54% | 2392 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,611 psi | 64% | 2530 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,518 psi | 51% | 2375 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 40,103 psi | 63% | 2592 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 50,227 psi | 79% | 2559 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,618 psi | 79% | 2579 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,618 psi | 79% | 2579 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,377 psi | 60% | 2480 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 37,057 psi | 58% | 2434 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 50,401 psi | 79% | 2667 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,408 psi | 63% | 2497 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 39,552 psi | 62% | 2503 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,746 psi | 73% | 2687 fps | 98.9% |
| Alliant Power Pro 2000-MR | 64 gr | 84% | 39,566 psi | 62% | 2598 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,778 psi | 50% | 2352 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,413 psi | 74% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,724 psi | 58% | 2464 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,799 psi | 64% | 2602 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,708 psi | 56% | 2516 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,255 psi | 77% | 2556 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,842 psi | 62% | 2530 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 31,169 psi | 49% | 2352 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,612 psi | 67% | 2497 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,609 psi | 61% | 2513 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,279 psi | 66% | 2635 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 46,195 psi | 72% | 2605 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,905 psi | 74% | 2625 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 41,930 psi | 66% | 2562 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 38,682 psi | 61% | 2493 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,041 psi | 55% | 2448 fps | 95.8% |
| Hodgdon LEVERevolution | 59.8 gr | 80% | 34,664 psi | 54% | 2454 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 40% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,217 psi | 58% | 2448 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 37,666 psi | 59% | 2500 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,521 psi | 57% | 2418 fps | 95.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 50,502 psi | 79% | 2641 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 47,950 psi | 75% | 2543 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,852 psi | 83% | 2710 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 38,667 psi | 61% | 2543 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,114 psi | 55% | 2441 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 40,408 psi | 63% | 2497 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 45,295 psi | 71% | 2579 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 36,840 psi | 58% | 2464 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 39,233 psi | 61% | 2431 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 34,084 psi | 53% | 2375 fps | 96.7% |
| Lovex S065 | <<locked>> | 96% | 45,585 psi | 71% | 2602 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 53,403 psi | 84% | 2638 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,753 psi | 59% | 2444 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 37,768 psi | 59% | 2457 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 33,721 psi | 53% | 2398 fps | 95% |
| Norma URP | <<locked>> | 96% | 40,567 psi | 64% | 2592 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 82% | 35,520 psi | 56% | 2461 fps | 95.3% |
| Ramshot TAC | <<locked>> | 82% | 43,163 psi | 68% | 2546 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,494 psi | 62% | 2513 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,830 psi | 69% | 2543 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 41% | 1512 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,498 psi | 71% | 2585 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,675 psi | 76% | 2654 fps | 95.4% |
| ReloadSwiss RS 52 | 60.6 gr | 82% | 37,898 psi | 59% | 2556 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,356 psi | 46% | 2356 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,161 psi | 63% | 2608 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,106 psi | 69% | 2677 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 41,539 psi | 65% | 2497 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,955 psi | 56% | 2395 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 84% | 33,301 psi | 52% | 2395 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,585 psi | 71% | 2602 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,840 psi | 58% | 2464 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 34,084 psi | 53% | 2375 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,037 psi | 75% | 2602 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,157 psi | 85% | 2369 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,879 psi | 80% | 2680 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,795 psi | 55% | 2448 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,037 psi | 75% | 2592 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,944 psi | 64% | 2513 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,014 psi | 58% | 2451 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,349 psi | 62% | 2411 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,314 psi | 51% | 2280 fps | 99.1% |
| Somchem S321 | <<locked>> | 80% | 43,381 psi | 68% | 2572 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 38,914 psi | 61% | 2418 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 38,014 psi | 60% | 2464 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 32,430 psi | 51% | 2359 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 29,950 psi | 47% | 2379 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 44,614 psi | 70% | 2487 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,465 psi | 62% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,737 psi | 54% | 2392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,650 psi | 56% | 2395 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,790 psi | 45% | 2251 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 94% | 40,001 psi | 63% | 2543 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,437 psi | 63% | 2493 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,316 psi | 54% | 2382 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 96% | 41,872 psi | 66% | 2598 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,576 psi | 53% | 2372 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,276 psi | 62% | 2530 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,042 psi | 56% | 2448 fps | 96.5% |
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 97 powders for .358 Norma Mag. loaded with the .358 | 225gr | NorthFork Bonded Core. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,920 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .358 Norma Mag. with the .358 | 225gr | NorthFork Bonded Core 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.