Load Specifications
Bullet Manufacturer:Rhino Bullets
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:1:16.0
Load data in caliber .358 Norma Mag. with .358 | 250gr | Rhino Penetrator bullet and 104 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 ReloadSwiss RS 60.
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% | 54,984 psi | 86% | 2510 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 56,913 psi | 89% | 2579 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,854 psi | 88% | 2566 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,940 psi | 86% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,347 psi | 88% | 2562 fps | 96.2% |
| Accurate 4064 | <<locked>> | 96% | 55,463 psi | 87% | 2608 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,500 psi | 74% | 2572 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 82% | 54,534 psi | 85% | 2457 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,940 psi | 86% | 2480 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,145 psi | 90% | 2641 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 54,636 psi | 86% | 2589 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 55,143 psi | 86% | 2569 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,565 psi | 89% | 2598 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 56,507 psi | 89% | 2575 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,824 psi | 86% | 2651 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,739 psi | 89% | 2749 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 57,464 psi | 90% | 2654 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,853 psi | 86% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,955 psi | 86% | 2631 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,210 psi | 74% | 2579 fps | 98.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,447 psi | 85% | 2720 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,072 psi | 89% | 2500 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,942 psi | 89% | 2657 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 54,360 psi | 85% | 2625 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,259 psi | 87% | 2589 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,129 psi | 86% | 2539 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,332 psi | 87% | 2628 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 57,464 psi | 90% | 2720 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 86% | 57,276 psi | 90% | 2595 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,766 psi | 86% | 2575 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,854 psi | 88% | 2635 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2621 fps | 96.3% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 2635 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 92% | 57,682 psi | 90% | 2651 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,178 psi | 68% | 2467 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 56,579 psi | 89% | 2684 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 55% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,637 psi | 87% | 2608 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 57,029 psi | 89% | 2631 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 57,537 psi | 90% | 2618 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,824 psi | 86% | 2556 fps | 96.8% |
| IMR 4198 | <<locked>> | 84% | 55,042 psi | 86% | 2474 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 57,290 psi | 90% | 2621 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,411 psi | 71% | 2523 fps | 97.9% |
| IMR 4895 | <<locked>> | 94% | 56,304 psi | 88% | 2661 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 56,565 psi | 89% | 2598 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 56,797 psi | 89% | 2589 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,492 psi | 89% | 2621 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 57,435 psi | 90% | 2575 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 57,145 psi | 90% | 2618 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2562 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2546 fps | 96.2% |
| Norma 201 | <<locked>> | 92% | 55,956 psi | 88% | 2592 fps | 100% |
| Norma 202 | <<locked>> | 92% | 56,289 psi | 88% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,421 psi | 90% | 2664 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 47,413 psi | 74% | 2566 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 94% | 54,360 psi | 85% | 2644 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,644 psi | 73% | 2556 fps | 96.2% |
| Ramshot TAC | <<locked>> | 90% | 57,058 psi | 89% | 2618 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,159 psi | 88% | 2635 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,288 psi | 85% | 2559 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 55% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,188 psi | 88% | 2585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,492 psi | 89% | 2618 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,737 psi | 86% | 2690 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,418 psi | 85% | 2723 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,108 psi | 74% | 2589 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,254 psi | 76% | 2612 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 90% | 57,101 psi | 89% | 2575 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 56,231 psi | 88% | 2585 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2661 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,259 psi | 87% | 2589 fps | 96.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2562 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,492 psi | 89% | 2621 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 57,145 psi | 90% | 2618 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2546 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,086 psi | 88% | 2559 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,477 psi | 87% | 2579 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,912 psi | 88% | 2671 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,753 psi | 87% | 2533 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,187 psi | 86% | 2595 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,448 psi | 87% | 2615 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,694 psi | 86% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 57,725 psi | 90% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,316 psi | 84% | 2523 fps | 96.5% |
| Somchem S321 | <<locked>> | 86% | 54,215 psi | 85% | 2585 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 57,058 psi | 89% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,592 psi | 86% | 2589 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 54,578 psi | 86% | 2612 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,105 psi | 66% | 2516 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 86% | 54,694 psi | 86% | 2467 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,665 psi | 86% | 2484 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,390 psi | 87% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,869 psi | 89% | 2572 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2595 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 2566 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 90% | 57,072 psi | 89% | 2598 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 55,071 psi | 86% | 2575 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2572 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,273 psi | 55% | 2395 fps | 95.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,908 psi | 80% | 2552 fps | 99.7% |
| Winchester 748 | <<locked>> | 90% | 56,434 psi | 88% | 2644 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2621 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,288 psi | 87% | 2625 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% | 42,873 psi | 67% | 2343 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,731 psi | 73% | 2441 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,447 psi | 56% | 2267 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,829 psi | 66% | 2398 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 52,823 psi | 83% | 2513 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 33,547 psi | 53% | 2257 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 35,955 psi | 56% | 2365 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 51,300 psi | 80% | 2415 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,706 psi | 81% | 2438 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,494 psi | 62% | 2359 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 33,634 psi | 53% | 2221 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 51,532 psi | 81% | 2523 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,481 psi | 65% | 2369 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 40,683 psi | 64% | 2365 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,109 psi | 75% | 2549 fps | 99.5% |
| Alliant Power Pro 2000-MR | 57.3 gr | 80% | 35,520 psi | 56% | 2362 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,735 psi | 51% | 2238 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,457 psi | 76% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,346 psi | 55% | 2293 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,014 psi | 58% | 2379 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,169 psi | 50% | 2297 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,285 psi | 79% | 2415 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,305 psi | 60% | 2356 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 32,126 psi | 50% | 2241 fps | 96.6% |
| Bofors RP7 | <<locked>> | 98% | 51,764 psi | 81% | 2539 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,366 psi | 68% | 2362 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,624 psi | 62% | 2385 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,410 psi | 68% | 2503 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 47,224 psi | 74% | 2461 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,805 psi | 75% | 2480 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,797 psi | 59% | 2336 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 98% | 47,863 psi | 75% | 2569 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 98% | 52,518 psi | 82% | 2589 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 39,755 psi | 62% | 2369 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,734 psi | 50% | 2234 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,607 psi | 56% | 2336 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 41% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,203 psi | 60% | 2326 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 38,841 psi | 61% | 2372 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,215 psi | 55% | 2251 fps | 95.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,457 psi | 76% | 2457 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 49,023 psi | 77% | 2395 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,747 psi | 75% | 2477 fps | 95.2% |
| IMR 4831 | <<locked>> | 92% | 34,969 psi | 55% | 2326 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,158 psi | 57% | 2323 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 41,481 psi | 65% | 2369 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 46,427 psi | 73% | 2448 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,869 psi | 59% | 2339 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,045 psi | 63% | 2306 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 34,954 psi | 55% | 2257 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 41,365 psi | 65% | 2382 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 46,862 psi | 73% | 2497 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,653 psi | 61% | 2316 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 38,769 psi | 61% | 2329 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,737 psi | 54% | 2283 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 36,811 psi | 58% | 2372 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,127 psi | 53% | 2290 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 43,714 psi | 69% | 2503 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 41,292 psi | 65% | 2365 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,306 psi | 63% | 2385 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,802 psi | 70% | 2411 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 41% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,441 psi | 73% | 2448 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,656 psi | 68% | 2421 fps | 95% |
| ReloadSwiss RS 52 | 55.5 gr | 80% | 36,347 psi | 57% | 2375 fps | 96.2% |
| ReloadSwiss RS 60 | 56.4 gr | 80% | 30,124 psi | 47% | 2251 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,537 psi | 60% | 2434 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,119 psi | 66% | 2497 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,511 psi | 67% | 2362 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,767 psi | 58% | 2274 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 30,168 psi | 47% | 2185 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 98% | 51,764 psi | 81% | 2539 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,365 psi | 65% | 2382 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,869 psi | 59% | 2339 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 34,954 psi | 55% | 2257 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 46,862 psi | 73% | 2497 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,168 psi | 77% | 2464 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,822 psi | 81% | 2533 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,359 psi | 52% | 2277 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,139 psi | 77% | 2448 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,291 psi | 62% | 2339 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,884 psi | 59% | 2326 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,176 psi | 63% | 2283 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,098 psi | 52% | 2162 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 46,644 psi | 73% | 2428 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 44,498 psi | 70% | 2441 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,798 psi | 62% | 2290 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,044 psi | 61% | 2343 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 31,256 psi | 49% | 2195 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 28,921 psi | 45% | 2221 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 45,556 psi | 71% | 2346 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,350 psi | 63% | 2283 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,723 psi | 56% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,651 psi | 57% | 2274 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,631 psi | 46% | 2142 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 36,274 psi | 57% | 2323 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,437 psi | 65% | 2365 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,114 psi | 55% | 2257 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 37,826 psi | 59% | 2375 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 98% | 33,156 psi | 52% | 2346 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,271 psi | 51% | 2211 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 40,422 psi | 63% | 2402 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 48,080 psi | 75% | 2572 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,086 psi | 58% | 2329 fps | 97.6% |
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 104 powders for .358 Norma Mag. loaded with the .358 | 250gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,749 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.358" calls for a 1:16.0 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, ReloadSwiss RS 60 rank at the top here: for .358 Norma Mag. with the .358 | 250gr | Rhino Penetrator 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.