Load Specifications
Bullet Manufacturer:Impala Bullets
Bullet Weight:420 gr
Bullet Diameter:0.458"
Bullet Length:<<locked>>
Caliber:.460 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:141.1 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Load data in caliber .460 Weath. Mag. with .458 | 420gr | Impala RNFP KO bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 55,883 psi | 88% | 2493 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,331 psi | 85% | 2520 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,723 psi | 86% | 2526 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,608 psi | 87% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,507 psi | 89% | 2552 fps | 96.8% |
| Accurate 4064 | <<locked>> | 94% | 57,522 psi | 90% | 2605 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,170 psi | 82% | 2625 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 57,276 psi | 90% | 2470 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,667 psi | 90% | 2493 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 57,464 psi | 90% | 2628 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 54,853 psi | 86% | 2579 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,652 psi | 89% | 2582 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,174 psi | 90% | 2559 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,230 psi | 87% | 2635 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,565 psi | 89% | 2736 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,694 psi | 86% | 2602 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,448 psi | 87% | 2493 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,477 psi | 87% | 2625 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,531 psi | 79% | 2625 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,563 psi | 86% | 2710 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,796 psi | 58% | 2398 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,205 psi | 63% | 2523 fps | 96.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,449 psi | 88% | 2474 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,942 psi | 89% | 2644 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 55,390 psi | 87% | 2618 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 55,608 psi | 87% | 2582 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,288 psi | 87% | 2523 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,854 psi | 88% | 2618 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 57,334 psi | 90% | 2703 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 57,217 psi | 90% | 2572 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,795 psi | 86% | 2559 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,376 psi | 88% | 2628 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2667 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 98% | 55,956 psi | 88% | 2628 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 54,795 psi | 86% | 2595 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,862 psi | 73% | 2516 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,666 psi | 89% | 2671 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2697 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 56% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,637 psi | 87% | 2592 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,375 psi | 85% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,549 psi | 85% | 2566 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,839 psi | 86% | 2543 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 55,071 psi | 86% | 2448 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2556 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 98% | 57,203 psi | 90% | 2608 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2572 fps | 99% |
| IMR 4895 | <<locked>> | 92% | 56,840 psi | 89% | 2651 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 56,652 psi | 89% | 2582 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,551 psi | 90% | 2575 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 57,377 psi | 90% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,246 psi | 90% | 2559 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 54,650 psi | 86% | 2566 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2608 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2592 fps | 97.5% |
| Norma 201 | <<locked>> | 90% | 56,826 psi | 89% | 2582 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,782 psi | 89% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,665 psi | 86% | 2612 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2612 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 54,621 psi | 86% | 2635 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2605 fps | 97.5% |
| Ramshot TAC | <<locked>> | 88% | 56,913 psi | 89% | 2602 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,347 psi | 88% | 2621 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,433 psi | 85% | 2543 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,260 psi | 88% | 2566 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,652 psi | 89% | 2608 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,332 psi | 87% | 2684 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,549 psi | 85% | 2713 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,256 psi | 80% | 2644 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2664 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 86% | 55,419 psi | 87% | 2526 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,188 psi | 90% | 2579 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,259 psi | 87% | 2612 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 55,608 psi | 87% | 2582 fps | 96.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2608 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 57,377 psi | 90% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,650 psi | 86% | 2566 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2592 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,101 psi | 88% | 2539 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,173 psi | 88% | 2664 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,869 psi | 88% | 2510 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,550 psi | 87% | 2585 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,709 psi | 87% | 2605 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,013 psi | 86% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,462 psi | 85% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2562 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 54,520 psi | 85% | 2572 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,551 psi | 90% | 2520 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,694 psi | 86% | 2575 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 55,463 psi | 87% | 2605 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,050 psi | 72% | 2572 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,911 psi | 86% | 2444 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,911 psi | 86% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,362 psi | 88% | 2543 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,130 psi | 90% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,710 psi | 89% | 2585 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2608 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 88% | 57,276 psi | 90% | 2585 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,230 psi | 87% | 2559 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2618 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,378 psi | 62% | 2467 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2592 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 56,579 psi | 89% | 2628 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 2667 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,083 psi | 52% | 2385 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,477 psi | 87% | 2612 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,036 psi | 74% | 2375 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,966 psi | 80% | 2477 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,799 psi | 64% | 2326 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,006 psi | 72% | 2444 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,009 psi | 78% | 2457 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 38,464 psi | 60% | 2320 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,518 psi | 53% | 2293 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 53,998 psi | 85% | 2431 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,389 psi | 85% | 2454 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,902 psi | 67% | 2402 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,695 psi | 57% | 2270 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,715 psi | 70% | 2405 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 44,570 psi | 70% | 2398 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,851 psi | 81% | 2585 fps | 99.9% |
| Alliant Power Pro 2000-MR | 92 gr | 80% | 38,740 psi | 61% | 2425 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,318 psi | 57% | 2293 fps | 98.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,388 psi | 82% | 2454 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,885 psi | 61% | 2346 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,040 psi | 53% | 2293 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,531 psi | 49% | 2264 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,169 psi | 49% | 2260 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,797 psi | 59% | 2470 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,200 psi | 83% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,611 psi | 65% | 2402 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 36,201 psi | 57% | 2303 fps | 98.3% |
| Bofors RP7 | <<locked>> | 92% | 46,673 psi | 73% | 2444 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,644 psi | 73% | 2395 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,453 psi | 68% | 2431 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,992 psi | 74% | 2549 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 50,662 psi | 79% | 2487 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,459 psi | 81% | 2513 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,840 psi | 58% | 2297 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 45,614 psi | 71% | 2520 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 94% | 49,588 psi | 78% | 2533 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 43,250 psi | 68% | 2411 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,675 psi | 47% | 2165 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,001 psi | 61% | 2388 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 96% | 48,936 psi | 77% | 2592 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 42% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,379 psi | 65% | 2365 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 42,612 psi | 67% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,522 psi | 60% | 2297 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,977 psi | 72% | 2405 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 51,967 psi | 81% | 2411 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,921 psi | 77% | 2510 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,527 psi | 71% | 2428 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 34,490 psi | 54% | 2297 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,726 psi | 62% | 2375 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 44,715 psi | 70% | 2405 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 50,792 psi | 80% | 2487 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,119 psi | 66% | 2392 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,163 psi | 68% | 2343 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,769 psi | 61% | 2310 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 40,321 psi | 63% | 2343 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 42,859 psi | 67% | 2411 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,670 psi | 67% | 2365 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 42,409 psi | 66% | 2369 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,290 psi | 60% | 2336 fps | 97.9% |
| Norma URP | <<locked>> | 86% | 33,924 psi | 53% | 2290 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 37,463 psi | 59% | 2346 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 41,974 psi | 66% | 2461 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 44,556 psi | 70% | 2411 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,801 psi | 69% | 2428 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,037 psi | 75% | 2448 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 43% | 1404 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,893 psi | 78% | 2477 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,930 psi | 66% | 2372 fps | 95.2% |
| ReloadSwiss RS 52 | 89.1 gr | 80% | 40,016 psi | 63% | 2431 fps | 97.9% |
| ReloadSwiss RS 60 | 90.6 gr | 80% | 33,373 psi | 52% | 2323 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,302 psi | 55% | 2352 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,971 psi | 60% | 2402 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,847 psi | 73% | 2402 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,712 psi | 64% | 2323 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,214 psi | 54% | 2254 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 46,673 psi | 73% | 2444 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,321 psi | 63% | 2343 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,119 psi | 66% | 2392 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,769 psi | 61% | 2310 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 42,859 psi | 67% | 2411 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,576 psi | 82% | 2493 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,534 psi | 54% | 2287 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,576 psi | 82% | 2467 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,062 psi | 67% | 2388 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,234 psi | 65% | 2372 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,627 psi | 68% | 2316 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,332 psi | 57% | 2201 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,541 psi | 70% | 2382 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 48,153 psi | 75% | 2480 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,439 psi | 68% | 2323 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,438 psi | 67% | 2385 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,041 psi | 55% | 2257 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 25,962 psi | 41% | 2113 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 49,023 psi | 77% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,642 psi | 68% | 2310 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,653 psi | 62% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,132 psi | 63% | 2313 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,185 psi | 52% | 2201 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 35,317 psi | 55% | 2287 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 44,889 psi | 70% | 2405 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,653 psi | 61% | 2306 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 34,722 psi | 54% | 2293 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 33,214 psi | 52% | 2333 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,602 psi | 46% | 2129 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 44,034 psi | 69% | 2448 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,701 psi | 72% | 2523 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,285 psi | 49% | 2329 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,567 psi | 64% | 2379 fps | 98.8% |
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 107 powders for .460 Weath. Mag. loaded with the .458 | 420gr | Impala RNFP KO. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,535 fps to 2,736 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .460 Weath. Mag. with the .458 | 420gr | Impala RNFP KO 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.