Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:250 gr
Bullet Diameter:0.358"
Bullet Length:<<locked>>
Caliber:.358 Norma Mag. load data
Case Length (l3):2.519"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:88 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:17.0
Load data in caliber .358 Norma Mag. with .358 | 250gr | NorthFork Bonded Core bullet and 106 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 60 and ReloadSwiss RS 52.
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 2015 | <<locked>> | 88% | 55,941 psi | 88% | 2530 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,447 psi | 85% | 2556 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,319 psi | 90% | 2592 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,014 psi | 88% | 2612 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 57,595 psi | 90% | 2589 fps | 96.6% |
| Accurate 4064 | <<locked>> | 96% | 56,826 psi | 89% | 2631 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,921 psi | 77% | 2602 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 82% | 55,419 psi | 87% | 2477 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,898 psi | 88% | 2503 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,839 psi | 86% | 2618 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 55,782 psi | 87% | 2615 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 56,333 psi | 88% | 2592 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,566 psi | 90% | 2621 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,317 psi | 85% | 2556 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,854 psi | 88% | 2674 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,143 psi | 85% | 2723 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,303 psi | 87% | 2638 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,956 psi | 88% | 2536 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,159 psi | 88% | 2657 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,182 psi | 76% | 2605 fps | 98.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2749 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,084 psi | 53% | 2356 fps | 96.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,389 psi | 85% | 2477 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,491 psi | 85% | 2635 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 55,840 psi | 88% | 2654 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2615 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,159 psi | 88% | 2562 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,782 psi | 89% | 2657 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,824 psi | 86% | 2694 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 55,042 psi | 86% | 2575 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,043 psi | 88% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,203 psi | 90% | 2664 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,359 psi | 82% | 2651 fps | 96.8% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2667 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 55,390 psi | 87% | 2631 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,396 psi | 70% | 2497 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,128 psi | 85% | 2657 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2684 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 55% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,811 psi | 89% | 2631 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,071 psi | 86% | 2615 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,390 psi | 87% | 2602 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,898 psi | 88% | 2582 fps | 97.2% |
| IMR 4198 | <<locked>> | 84% | 56,159 psi | 88% | 2497 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,940 psi | 86% | 2598 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2549 fps | 98.3% |
| IMR 4895 | <<locked>> | 94% | 57,551 psi | 90% | 2687 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 57,566 psi | 90% | 2621 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,288 psi | 85% | 2566 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,128 psi | 85% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,114 psi | 86% | 2556 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 54,839 psi | 86% | 2598 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2592 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2575 fps | 96.7% |
| Norma 201 | <<locked>> | 92% | 56,971 psi | 89% | 2615 fps | 100% |
| Norma 202 | <<locked>> | 92% | 57,595 psi | 90% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,303 psi | 87% | 2648 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,718 psi | 76% | 2595 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 94% | 55,709 psi | 87% | 2671 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,718 psi | 75% | 2585 fps | 96.6% |
| Ramshot TAC | <<locked>> | 88% | 54,621 psi | 86% | 2595 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,580 psi | 90% | 2661 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,434 psi | 87% | 2582 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 55% | 1591 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,261 psi | 90% | 2608 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,215 psi | 85% | 2598 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,405 psi | 88% | 2720 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,651 psi | 87% | 2749 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 2621 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2641 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 88% | 54,766 psi | 86% | 2552 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,537 psi | 90% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,405 psi | 87% | 2641 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2615 fps | 96.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2592 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,128 psi | 85% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,839 psi | 86% | 2598 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2575 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,348 psi | 90% | 2585 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,565 psi | 89% | 2602 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,290 psi | 90% | 2700 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,869 psi | 89% | 2556 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,289 psi | 88% | 2618 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,884 psi | 89% | 2644 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,825 psi | 87% | 2520 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,477 psi | 87% | 2516 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2552 fps | 96.9% |
| Somchem S321 | <<locked>> | 86% | 55,434 psi | 87% | 2612 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,810 psi | 86% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,724 psi | 87% | 2612 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 56,014 psi | 88% | 2641 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,265 psi | 68% | 2546 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 55,651 psi | 87% | 2487 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,811 psi | 87% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,826 psi | 89% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,520 psi | 85% | 2556 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2621 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2592 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 88% | 54,636 psi | 86% | 2575 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,173 psi | 88% | 2598 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2598 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,361 psi | 57% | 2428 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2582 fps | 99.9% |
| Winchester 748 | <<locked>> | 90% | 57,711 psi | 90% | 2667 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 2654 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,463 psi | 88% | 2648 fps | 100% |
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% | 43,874 psi | 69% | 2365 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,645 psi | 75% | 2464 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,419 psi | 57% | 2293 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,931 psi | 67% | 2425 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 50,546 psi | 79% | 2490 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,432 psi | 54% | 2280 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 34,534 psi | 54% | 2343 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 51,996 psi | 81% | 2434 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,402 psi | 82% | 2457 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,321 psi | 63% | 2382 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 34,374 psi | 54% | 2244 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 52,750 psi | 83% | 2546 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,322 psi | 66% | 2392 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 41,771 psi | 65% | 2388 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,168 psi | 77% | 2575 fps | 99.7% |
| Alliant Power Pro 2000-MR | 58.6 gr | 80% | 36,361 psi | 57% | 2392 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,547 psi | 53% | 2264 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,545 psi | 78% | 2454 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,143 psi | 57% | 2320 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,592 psi | 56% | 2356 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,864 psi | 48% | 2270 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,184 psi | 50% | 2306 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,995 psi | 80% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,015 psi | 61% | 2379 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 32,909 psi | 52% | 2264 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 49,734 psi | 78% | 2520 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,164 psi | 69% | 2385 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,625 psi | 64% | 2411 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,440 psi | 70% | 2530 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 48,225 psi | 76% | 2484 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,892 psi | 77% | 2507 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,696 psi | 61% | 2362 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 96% | 45,963 psi | 72% | 2546 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 98% | 53,780 psi | 84% | 2618 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,611 psi | 64% | 2392 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,574 psi | 48% | 2215 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,361 psi | 57% | 2359 fps | 98% |
| Hodgdon Superformance | <<locked>> | 98% | 49,995 psi | 78% | 2625 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 41% | 1385 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,015 psi | 61% | 2349 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 39,697 psi | 62% | 2392 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,027 psi | 56% | 2277 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,514 psi | 73% | 2438 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,922 psi | 78% | 2418 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,021 psi | 72% | 2461 fps | 95% |
| IMR 4831 | <<locked>> | 92% | 35,955 psi | 56% | 2356 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 36,999 psi | 58% | 2349 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,322 psi | 66% | 2392 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 47,500 psi | 74% | 2470 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,725 psi | 61% | 2362 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 40,843 psi | 64% | 2329 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 35,766 psi | 56% | 2280 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 39,827 psi | 62% | 2359 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 45,150 psi | 71% | 2477 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,523 psi | 62% | 2343 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 39,624 psi | 62% | 2352 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,534 psi | 56% | 2310 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 35,418 psi | 56% | 2349 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 34,911 psi | 55% | 2316 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 42,061 psi | 66% | 2484 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,148 psi | 66% | 2392 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,263 psi | 65% | 2411 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,716 psi | 72% | 2438 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 41% | 1421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,297 psi | 74% | 2467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,672 psi | 70% | 2448 fps | 95.5% |
| ReloadSwiss RS 52 | 56.8 gr | 80% | 37,362 psi | 59% | 2405 fps | 96.7% |
| ReloadSwiss RS 60 | 57.7 gr | 80% | 30,864 psi | 48% | 2280 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 36,970 psi | 58% | 2411 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,393 psi | 63% | 2474 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,308 psi | 68% | 2385 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,594 psi | 59% | 2297 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 30,980 psi | 49% | 2211 fps | 96% |
| Rottweil R 907 | <<locked>> | 96% | 49,734 psi | 78% | 2520 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,827 psi | 62% | 2359 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,725 psi | 61% | 2362 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,766 psi | 56% | 2280 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 45,150 psi | 71% | 2477 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,154 psi | 79% | 2487 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,910 psi | 83% | 2556 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,082 psi | 50% | 2257 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,299 psi | 79% | 2470 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,219 psi | 63% | 2365 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,812 psi | 61% | 2352 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,133 psi | 64% | 2306 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,895 psi | 53% | 2185 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,688 psi | 75% | 2451 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 45,266 psi | 71% | 2464 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 40,611 psi | 64% | 2310 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,784 psi | 62% | 2365 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 32,039 psi | 50% | 2221 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 27,891 psi | 44% | 2201 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 46,528 psi | 73% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,292 psi | 65% | 2306 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,695 psi | 57% | 2290 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,478 psi | 59% | 2297 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,356 psi | 48% | 2165 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 37,043 psi | 58% | 2349 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,264 psi | 66% | 2388 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,027 psi | 56% | 2283 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,347 psi | 57% | 2352 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 34,026 psi | 53% | 2375 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,908 psi | 48% | 2188 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,249 psi | 65% | 2428 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 46,180 psi | 72% | 2549 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,029 psi | 60% | 2356 fps | 98% |
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 106 powders for .358 Norma Mag. loaded with the .358 | 250gr | NorthFork Bonded Core. Alliant Reloder-17 delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,749 fps. Accurate 4350 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.358" calls for a 1:17.0 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 60, ReloadSwiss RS 52 rank at the top here: for .358 Norma Mag. with the .358 | 250gr | 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.