Load Specifications
Load data in caliber .458 Win.Mag. with .457 | 400gr | Frontier PH HPFB bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, Shooters World AR Plus and Lovex D073.4.
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 1680 | <<locked>> | 90% | 53,127 psi | 85% | 2182 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 45,121 psi | 72% | 2165 fps | 99.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,995 psi | 80% | 2247 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,112 psi | 53% | 2060 fps | 98.3% |
| Accurate 2520ᴾ | <<locked>> | 100% | 43,120 psi | 69% | 2195 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 96% | 53,301 psi | 85% | 2182 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 96% | 53,853 psi | 86% | 2188 fps | 98.5% |
| ADI AR 2205 | <<locked>> | 84% | 55,680 psi | 89% | 2096 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 55,405 psi | 89% | 2251 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 53,954 psi | 87% | 2310 fps | 99.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,684 psi | 67% | 2188 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 50,604 psi | 81% | 2326 fps | 96% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,214 psi | 84% | 2260 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 94% | 54,491 psi | 87% | 2228 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,607 psi | 88% | 2221 fps | 99.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,472 psi | 78% | 2178 fps | 96.6% |
| Hodgdon CFE BLK | <<locked>> | 82% | 54,317 psi | 87% | 2238 fps | 97% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2280 fps | 99.5% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,866 psi | 85% | 2303 fps | 99% |
| Hodgdon H4198 | <<locked>> | 94% | 55,666 psi | 89% | 2221 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,589 psi | 51% | 1289 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,523 psi | 63% | 2165 fps | 98.5% |
| IMR 4198ᴾ | <<locked>> | 100% | 54,360 psi | 87% | 2238 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 56,130 psi | 90% | 2188 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 55,912 psi | 90% | 2221 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 55,608 psi | 89% | 2313 fps | 98.6% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 50,270 psi | 81% | 2247 fps | 97.3% |
| Lovex S053 | <<locked>> | 90% | 54,128 psi | 87% | 2142 fps | 100% |
| Norma 200 | <<locked>> | 98% | 55,709 psi | 89% | 2280 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,089 psi | 64% | 2133 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,314 psi | 50% | 1322 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 55,463 psi | 89% | 2218 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2260 fps | 98% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,498 psi | 71% | 2162 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 96% | 55,608 psi | 89% | 2313 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 55,912 psi | 90% | 2221 fps | 100% |
| Shooters World SOCOM | <<locked>> | 82% | 53,592 psi | 86% | 2165 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 98% | 53,026 psi | 85% | 2234 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 54,795 psi | 88% | 2018 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 54,157 psi | 87% | 2310 fps | 99.1% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,476 psi | 86% | 2267 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,440 psi | 71% | 2103 fps | 97.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1985 fps | 96.5% |
| Somchem S321ᴾ | <<locked>> | 100% | 48,472 psi | 78% | 2247 fps | 96.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,525 psi | 68% | 2106 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 84% | 53,722 psi | 86% | 2060 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 55,506 psi | 89% | 2208 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,096 psi | 80% | 2185 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,381 psi | 70% | 2110 fps | 99.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,665 psi | 57% | 2070 fps | 98.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,450 psi | 62% | 2080 fps | 96.7% |
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% | 38,493 psi | 62% | 1991 fps | 99.4% |
| Accurate 2015 | <<locked>> | 82% | 25,860 psi | 41% | 1827 fps | 95.2% |
| Accurate 2460 | <<locked>> | 90% | 35,795 psi | 57% | 2041 fps | 95.4% |
| Accurate 2495 | <<locked>> | 90% | 23,772 psi | 38% | 1864 fps | 95% |
| Accurate 2520 | <<locked>> | 96% | 37,565 psi | 60% | 2110 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 33,083 psi | 53% | 1886 fps | 96.1% |
| Accurate LT-32 | <<locked>> | 84% | 37,840 psi | 61% | 1965 fps | 95.3% |
| ADI AR 2205 | <<locked>> | 80% | 49,385 psi | 79% | 2028 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,171 psi | 55% | 1972 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 31,995 psi | 51% | 1972 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 22,829 psi | 37% | 1795 fps | 96% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 47,413 psi | 76% | 2283 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,355 psi | 45% | 1890 fps | 97.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,752 psi | 57% | 1975 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,908 psi | 50% | 1877 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 96% | 43,149 psi | 69% | 2103 fps | 95.4% |
| Hodgdon CFE BLK | <<locked>> | 80% | 50,981 psi | 82% | 2195 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 84% | 31,241 psi | 50% | 1955 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 88% | 35,781 psi | 57% | 2051 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 36,506 psi | 59% | 1955 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,119 psi | 37% | 1148 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 29,356 psi | 47% | 1965 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 30,821 psi | 49% | 1890 fps | 98.8% |
| IMR 4227 | <<locked>> | 80% | 41,669 psi | 67% | 2014 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 49,792 psi | 80% | 2149 fps | 100% |
| Lovex D073.4 | 59.3 gr | 86% | 39,117 psi | 63% | 2093 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 94% | 40,727 psi | 65% | 2119 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 40,756 psi | 65% | 1982 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,039 psi | 51% | 1952 fps | 99.1% |
| Norma 202 | <<locked>> | 94% | 33,533 psi | 54% | 2018 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,076 psi | 37% | 1178 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,857 psi | 66% | 2041 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 39,784 psi | 64% | 2096 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 92% | 35,273 psi | 57% | 2014 fps | 95.3% |
| Shooters World AR Plus | 59.3 gr | 86% | 39,117 psi | 63% | 2093 fps | 95.6% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,792 psi | 80% | 2149 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 50,299 psi | 81% | 2129 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 49,458 psi | 79% | 2188 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,116 psi | 61% | 1831 fps | 100% |
| SNPE Vectan SP 10 | 57.7 gr | 84% | 34,214 psi | 55% | 2018 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,182 psi | 47% | 1886 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 34,824 psi | 56% | 1955 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 31,705 psi | 51% | 1913 fps | 95.1% |
| Somchem S321 | <<locked>> | 98% | 45,208 psi | 72% | 2201 fps | 95.6% |
| Somchem S335 | <<locked>> | 90% | 31,517 psi | 51% | 1923 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 80% | 47,921 psi | 77% | 2001 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,403 psi | 55% | 1946 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,543 psi | 44% | 1824 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 27,209 psi | 44% | 1824 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 90% | 26,498 psi | 42% | 1883 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 34,142 psi | 55% | 2005 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 51 powders for .458 Win.Mag. loaded with the .457 | 400gr | Frontier PH HPFB. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,326 fps; across all powders the maximum-charge window runs from 1,289 fps to 2,326 fps. Accurate 2015 gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 400.0 gr projectile in 0.457" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. SNPE Vectan SP 10, Shooters World AR Plus, Lovex D073.4 rank at the top here: for .458 Win.Mag. with the .457 | 400gr | Frontier PH HPFB 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.