Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 405gr | Remington SP bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Winchester StaBALL Match.
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 1680 | <<locked>> | 84% | 52,837 psi | 85% | 2270 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 53,867 psi | 86% | 2352 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 56,434 psi | 90% | 2434 fps | 97.3% |
| Accurate 2230 | <<locked>> | 88% | 52,968 psi | 85% | 2395 fps | 97.1% |
| Accurate 2460 | <<locked>> | 94% | 52,750 psi | 85% | 2375 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 45,324 psi | 73% | 2313 fps | 100% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,404 psi | 87% | 2444 fps | 99.8% |
| Accurate 2520ᴾ | <<locked>> | 100% | 54,404 psi | 87% | 2444 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 42,148 psi | 68% | 2290 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 90% | 53,621 psi | 86% | 2283 fps | 100% |
| Accurate LT-32 | <<locked>> | 90% | 54,056 psi | 87% | 2297 fps | 99.7% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 52,837 psi | 85% | 2408 fps | 97.6% |
| ADI AR 2207 | <<locked>> | 88% | 53,896 psi | 86% | 2310 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 55,593 psi | 89% | 2421 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 56,188 psi | 90% | 2425 fps | 99% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2418 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 53,664 psi | 86% | 2470 fps | 98.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 42,438 psi | 68% | 2283 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 94% | 54,476 psi | 87% | 2369 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 46,615 psi | 75% | 2343 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 88% | 55,463 psi | 89% | 2323 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 55,347 psi | 89% | 2326 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 52,765 psi | 85% | 2418 fps | 96.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 41,756 psi | 67% | 2287 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 98% | 55,941 psi | 90% | 2375 fps | 99.3% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 53,809 psi | 86% | 2451 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 98% | 56,434 psi | 90% | 2523 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 98% | 55,811 psi | 89% | 2425 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 54,810 psi | 88% | 2421 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 90% | 55,332 psi | 89% | 2320 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 53,200 psi | 85% | 2421 fps | 98.2% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 44,846 psi | 72% | 2343 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,025 psi | 53% | 1381 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 47,297 psi | 76% | 2320 fps | 97% |
| IMR 3031ᴾ | <<locked>> | 100% | 45,730 psi | 73% | 2352 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 55,767 psi | 89% | 2339 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 55,709 psi | 89% | 2270 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 47,572 psi | 76% | 2372 fps | 96.8% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 56,188 psi | 90% | 2425 fps | 99% |
| Lovex D073.4 | <<locked>> | 88% | 53,505 psi | 86% | 2388 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 94% | 52,750 psi | 85% | 2379 fps | 99.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2392 fps | 99.5% |
| Lovex S053 | <<locked>> | 84% | 54,447 psi | 87% | 2224 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 54,737 psi | 88% | 2359 fps | 97.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 45,876 psi | 74% | 2303 fps | 97.7% |
| Norma 200 | <<locked>> | 90% | 54,781 psi | 88% | 2352 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 51,605 psi | 83% | 2365 fps | 98.5% |
| Norma 202ᴾ | <<locked>> | 100% | 51,445 psi | 82% | 2382 fps | 99.8% |
| Norma 203Bᴾ | <<locked>> | 100% | 45,614 psi | 73% | 2333 fps | 96.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 46,383 psi | 74% | 2349 fps | 95.8% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2451 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 96% | 55,274 psi | 89% | 2388 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,996 psi | 53% | 1414 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 55,956 psi | 90% | 2306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 53,142 psi | 85% | 2382 fps | 99.5% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2431 fps | 96.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 40,944 psi | 66% | 2310 fps | 97.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 2405 fps | 99.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 48,704 psi | 78% | 2320 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 88% | 53,505 psi | 86% | 2388 fps | 99.6% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2392 fps | 99.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 45,876 psi | 74% | 2303 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 54,012 psi | 87% | 2356 fps | 98.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 54,955 psi | 88% | 2093 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 56,130 psi | 90% | 2431 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 55,738 psi | 89% | 2382 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2385 fps | 97.3% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 55,158 psi | 88% | 2339 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 44,367 psi | 71% | 2215 fps | 99.7% |
| Somchem S321 | <<locked>> | 96% | 54,172 psi | 87% | 2421 fps | 99% |
| Somchem S335ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 2336 fps | 100% |
| Somchem S341ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2405 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 88% | 53,911 psi | 86% | 2264 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 55,013 psi | 88% | 2326 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 54,259 psi | 87% | 2329 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 46,354 psi | 74% | 2310 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 48,834 psi | 78% | 2323 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,015 psi | 63% | 2192 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 98% | 53,621 psi | 86% | 2385 fps | 98.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 47,166 psi | 76% | 2320 fps | 99.4% |
| Winchester 748 | <<locked>> | 98% | 56,362 psi | 90% | 2480 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,432 psi | 86% | 2431 fps | 98.2% |
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 1680 | <<locked>> | 80% | 46,470 psi | 75% | 2192 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,082 psi | 50% | 2008 fps | 98.7% |
| Accurate 2200 | <<locked>> | 84% | 46,354 psi | 74% | 2293 fps | 95.3% |
| Accurate 2230 | <<locked>> | 84% | 45,948 psi | 74% | 2297 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 33,083 psi | 53% | 2067 fps | 96.7% |
| Accurate 2495 | <<locked>> | 80% | 23,482 psi | 38% | 1900 fps | 96.6% |
| Accurate 2520 | <<locked>> | 84% | 31,314 psi | 50% | 2083 fps | 95.6% |
| Accurate 2520 | <<locked>> | 84% | 31,314 psi | 50% | 2083 fps | 95.6% |
| Accurate 4064 | <<locked>> | 86% | 27,079 psi | 43% | 2001 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 39,827 psi | 64% | 2090 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 80% | 40,205 psi | 64% | 2100 fps | 97.9% |
| ADI AR 2206H | <<locked>> | 92% | 41,408 psi | 66% | 2238 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 42,409 psi | 68% | 2165 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,362 psi | 60% | 2162 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 36,564 psi | 59% | 2126 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 28,340 psi | 45% | 2021 fps | 99.8% |
| Alliant Power Pro 1200-R | 66.8 gr | 84% | 38,754 psi | 62% | 2238 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 37,565 psi | 60% | 2198 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,665 psi | 57% | 2100 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 43,729 psi | 70% | 2297 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,497 psi | 70% | 2172 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,971 psi | 61% | 2087 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 49,414 psi | 79% | 2372 fps | 95.6% |
| Bofors RP3 | <<locked>> | 96% | 36,564 psi | 59% | 2198 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 82% | 34,780 psi | 56% | 2051 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 86% | 33,649 psi | 54% | 2129 fps | 95% |
| Hodgdon CFE223 | 79.8 gr | 92% | 46,093 psi | 74% | 2375 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 31,850 psi | 51% | 2054 fps | 97.5% |
| Hodgdon H335 | <<locked>> | 80% | 36,405 psi | 58% | 2152 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 80% | 41,147 psi | 66% | 2123 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 90% | 39,059 psi | 63% | 2205 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 39,537 psi | 63% | 2251 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,337 psi | 39% | 1230 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 39,610 psi | 64% | 2195 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 25,092 psi | 40% | 1939 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 37,347 psi | 60% | 2090 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 49,530 psi | 79% | 2198 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 41,930 psi | 67% | 2283 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 86% | 36,564 psi | 59% | 2126 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 40,538 psi | 65% | 2201 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 32,866 psi | 53% | 2064 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 86% | 31,459 psi | 50% | 2087 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 48,718 psi | 78% | 2159 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 43,221 psi | 69% | 2195 fps | 95.5% |
| Lovex S062 | <<locked>> | 92% | 35,940 psi | 58% | 2136 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 40,277 psi | 65% | 2159 fps | 100% |
| Norma 201 | <<locked>> | 88% | 35,795 psi | 57% | 2116 fps | 95% |
| Norma 202 | <<locked>> | 82% | 29,312 psi | 47% | 2008 fps | 95.6% |
| Norma 203B | <<locked>> | 98% | 42,844 psi | 69% | 2290 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 98% | 43,468 psi | 70% | 2300 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 92% | 42,786 psi | 69% | 2267 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 88% | 42,801 psi | 69% | 2211 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,453 psi | 39% | 1263 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 49,516 psi | 79% | 2231 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,113 psi | 55% | 2080 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 45,905 psi | 74% | 2385 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,143 psi | 58% | 2215 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 31,154 psi | 50% | 2005 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 90% | 35,984 psi | 58% | 2113 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 40,538 psi | 65% | 2201 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,459 psi | 50% | 2087 fps | 95.6% |
| Shooters World Precision | <<locked>> | 92% | 35,940 psi | 58% | 2136 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 38,638 psi | 62% | 2129 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,730 psi | 72% | 1978 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 37,811 psi | 61% | 2165 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,260 psi | 58% | 2106 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 42,438 psi | 68% | 2254 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,023 psi | 48% | 1942 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 25,860 psi | 41% | 1867 fps | 95% |
| Somchem S321 | <<locked>> | 84% | 36,260 psi | 58% | 2149 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 29,225 psi | 47% | 1946 fps | 96.4% |
| Somchem S341 | <<locked>> | 94% | 44,019 psi | 71% | 2267 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 42,496 psi | 68% | 2126 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,229 psi | 55% | 2031 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 29,762 psi | 48% | 1955 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 80% | 24,932 psi | 40% | 1916 fps | 96.9% |
| Vihtavuori N140 | <<locked>> | 82% | 27,905 psi | 45% | 1955 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 96% | 34,389 psi | 55% | 2106 fps | 95% |
| Vihtavuori N530 | <<locked>> | 86% | 36,274 psi | 58% | 2119 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 86% | 30,269 psi | 49% | 2024 fps | 95.6% |
| Winchester 748 | <<locked>> | 84% | 35,244 psi | 57% | 2156 fps | 95.7% |
| Winchester StaBALL Match | 78.1 gr | 86% | 40,335 psi | 65% | 2238 fps | 95.4% |
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 94 powders for .458 Win.Mag. loaded with the .458 | 405gr | Remington SP. Hodgdon CFE223 delivers the highest muzzle velocity at 2,523 fps; across all powders the maximum-charge window runs from 1,381 fps to 2,523 fps. Accurate 2495 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 2520, Accurate 2520 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Winchester StaBALL Match rank at the top here: for .458 Win.Mag. with the .458 | 405gr | Remington SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-17, Hodgdon H380, IMR 4064 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.