Load Specifications
Load data in caliber .458 Win.Mag. with .457 | 450gr | CutEdge DGBR-HP bullet and 63 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 53,708 psi | 86% | 2031 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 45,455 psi | 73% | 2014 fps | 99.9% |
| Accurate 2200 | <<locked>> | 96% | 56,057 psi | 90% | 2152 fps | 96% |
| Accurate 2230 | <<locked>> | 96% | 55,927 psi | 90% | 2159 fps | 96.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2100 fps | 99.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,301 psi | 53% | 1923 fps | 99.1% |
| Accurate 2520ᴾ | <<locked>> | 100% | 43,685 psi | 70% | 2051 fps | 97.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 31,169 psi | 50% | 1896 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 96% | 54,012 psi | 87% | 2031 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 96% | 54,650 psi | 88% | 2041 fps | 99.2% |
| ADI AR 2205 | <<locked>> | 84% | 56,289 psi | 90% | 1942 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 56,217 psi | 90% | 2090 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 54,882 psi | 88% | 2152 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 45,542 psi | 73% | 2031 fps | 96.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,221 psi | 68% | 2041 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 51,605 psi | 83% | 2178 fps | 97.2% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,910 psi | 85% | 2103 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 94% | 54,940 psi | 88% | 2070 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 55,347 psi | 89% | 2070 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2031 fps | 97.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 42,018 psi | 67% | 2041 fps | 96.3% |
| Hodgdon CFE BLK | <<locked>> | 82% | 54,926 psi | 88% | 2083 fps | 97.9% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2129 fps | 99.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 53,824 psi | 86% | 2152 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 92% | 53,098 psi | 85% | 2034 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,357 psi | 50% | 1188 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,001 psi | 64% | 2024 fps | 99.3% |
| IMR 4198ᴾ | <<locked>> | 100% | 55,187 psi | 88% | 2080 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 53,563 psi | 86% | 2001 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 45,542 psi | 73% | 2031 fps | 96.4% |
| Lovex D060 | <<locked>> | 82% | 53,272 psi | 85% | 2028 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 56,289 psi | 90% | 2156 fps | 99.3% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 50,778 psi | 81% | 2100 fps | 98.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 38,319 psi | 61% | 1988 fps | 96.8% |
| Lovex S053 | <<locked>> | 90% | 54,766 psi | 88% | 1988 fps | 100% |
| Norma 200 | <<locked>> | 98% | 56,405 psi | 90% | 2123 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,727 psi | 65% | 1995 fps | 98% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 51,082 psi | 82% | 2073 fps | 95.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,096 psi | 50% | 1214 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 56,217 psi | 90% | 2060 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 52,083 psi | 84% | 2110 fps | 98.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,701 psi | 72% | 2018 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 96% | 56,289 psi | 90% | 2156 fps | 99.3% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 53,272 psi | 85% | 2028 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 38,319 psi | 61% | 1988 fps | 96.8% |
| Shooters World SOCOM | <<locked>> | 82% | 54,346 psi | 87% | 2011 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 98% | 53,925 psi | 86% | 2087 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 55,245 psi | 89% | 1867 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 55,085 psi | 88% | 2159 fps | 99.6% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2113 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,976 psi | 72% | 1965 fps | 98.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1854 fps | 97.5% |
| Somchem S321ᴾ | <<locked>> | 100% | 49,023 psi | 79% | 2100 fps | 97.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,946 psi | 69% | 1965 fps | 98.9% |
| Vihtavuori N110 | <<locked>> | 84% | 54,056 psi | 87% | 1906 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 56,347 psi | 90% | 2047 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2034 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,976 psi | 71% | 1969 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,969 psi | 58% | 1936 fps | 99.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,754 psi | 62% | 1942 fps | 97.8% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2028 fps | 96.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 37,231 psi | 60% | 1936 fps | 96.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 43,845 psi | 70% | 2054 fps | 96.9% |
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 1680 | <<locked>> | 80% | 38,609 psi | 62% | 1854 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 24,236 psi | 39% | 1670 fps | 95.7% |
| Accurate 2200 | <<locked>> | 94% | 52,518 psi | 84% | 2110 fps | 95.3% |
| Accurate 2230 | <<locked>> | 94% | 51,996 psi | 83% | 2116 fps | 95.7% |
| Accurate 2460 | <<locked>> | 86% | 31,227 psi | 50% | 1827 fps | 95.1% |
| Accurate 2495 | <<locked>> | 88% | 21,973 psi | 35% | 1699 fps | 95.3% |
| Accurate 2520 | <<locked>> | 92% | 33,083 psi | 53% | 1893 fps | 95.2% |
| Accurate 4064 | <<locked>> | 98% | 29,138 psi | 47% | 1857 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 33,373 psi | 54% | 1759 fps | 97.2% |
| Accurate LT-32 | <<locked>> | 80% | 33,794 psi | 54% | 1762 fps | 95.1% |
| ADI AR 2205 | <<locked>> | 80% | 49,864 psi | 80% | 1880 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,330 psi | 55% | 1834 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 30,153 psi | 48% | 1801 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 96% | 40,190 psi | 64% | 1955 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 22,640 psi | 36% | 1677 fps | 97.3% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 42,395 psi | 68% | 2057 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,340 psi | 45% | 1759 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,781 psi | 57% | 1834 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,140 psi | 50% | 1752 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 38,566 psi | 62% | 1890 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 98% | 39,233 psi | 63% | 1998 fps | 95.6% |
| Hodgdon CFE BLK | <<locked>> | 80% | 51,532 psi | 83% | 2047 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 82% | 29,501 psi | 47% | 1791 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 84% | 31,502 psi | 51% | 1837 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 36,912 psi | 59% | 1824 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,047 psi | 37% | 1060 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 25,991 psi | 42% | 1762 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 31,024 psi | 50% | 1762 fps | 99.4% |
| IMR 4227 | <<locked>> | 80% | 42,119 psi | 68% | 1873 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 40,190 psi | 64% | 1955 fps | 95% |
| Lovex D060 | <<locked>> | 80% | 50,256 psi | 81% | 1995 fps | 100% |
| Lovex D073.4 | 52.8 gr | 82% | 34,142 psi | 55% | 1870 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 90% | 35,781 psi | 57% | 1903 fps | 95% |
| Lovex D073.6 | <<locked>> | 96% | 33,417 psi | 54% | 1909 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 41,089 psi | 66% | 1837 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,908 psi | 51% | 1814 fps | 99.5% |
| Norma 202 | <<locked>> | 92% | 31,705 psi | 51% | 1850 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 98% | 47,805 psi | 77% | 2034 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,800 psi | 37% | 1083 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,191 psi | 66% | 1896 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 35,360 psi | 57% | 1883 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 88% | 31,169 psi | 50% | 1804 fps | 95% |
| Shooters World AR Plus | 52.8 gr | 82% | 34,142 psi | 55% | 1870 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 50,256 psi | 81% | 1995 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 33,417 psi | 54% | 1909 fps | 95.3% |
| Shooters World SOCOM | <<locked>> | 80% | 50,778 psi | 81% | 1975 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 43,830 psi | 70% | 1972 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,290 psi | 61% | 1693 fps | 100% |
| SNPE Vectan SP 10 | 52.6 gr | 82% | 32,198 psi | 52% | 1844 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,283 psi | 47% | 1759 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 32,924 psi | 53% | 1791 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 29,936 psi | 48% | 1752 fps | 95.7% |
| Somchem S321 | <<locked>> | 94% | 40,059 psi | 64% | 1982 fps | 95.5% |
| Somchem S335 | <<locked>> | 88% | 29,733 psi | 48% | 1759 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 80% | 48,298 psi | 77% | 1850 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,563 psi | 55% | 1804 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,557 psi | 44% | 1699 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 80% | 24,018 psi | 39% | 1631 fps | 95% |
| Vihtavuori N135 | <<locked>> | 86% | 23,409 psi | 38% | 1686 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 92% | 30,385 psi | 49% | 1801 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 96% | 40,161 psi | 64% | 1952 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 96% | 32,779 psi | 53% | 1864 fps | 95.5% |
| Winchester 748 | <<locked>> | 96% | 38,522 psi | 62% | 1975 fps | 95.5% |
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 63 powders for .458 Win.Mag. loaded with the .457 | 450gr | CutEdge DGBR-HP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,178 fps; across all powders the maximum-charge window runs from 1,188 fps to 2,178 fps. Accurate 2015 gives the best case fill at 100 %, and 63 of the 63 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 450.0 gr projectile in 0.457" calls for a 1:23.0 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 | 450gr | CutEdge DGBR-HP they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.