Load Specifications
Load data in caliber .458 x 2'' American with .458 | 450gr | CamPro SOCOM bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and ReloadSwiss RS 36.
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>> | 98% | 52,634 psi | 88% | 1831 fps | 99.6% |
| Accurate 5744 | <<locked>> | 84% | 53,432 psi | 89% | 1844 fps | 100% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 46,601 psi | 78% | 1755 fps | 97% |
| Accurate No. 11 FS | <<locked>> | 86% | 52,301 psi | 87% | 1798 fps | 100% |
| ADI AR 2205 | <<locked>> | 90% | 53,447 psi | 89% | 1745 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 45,977 psi | 77% | 1827 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 42,569 psi | 71% | 1804 fps | 95.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 30,763 psi | 51% | 1673 fps | 97.1% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 37,333 psi | 62% | 1752 fps | 98.2% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 48,979 psi | 82% | 1831 fps | 99.7% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 43,714 psi | 73% | 1752 fps | 96.7% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 51,721 psi | 86% | 1818 fps | 97.4% |
| Hodgdon LilGun | <<locked>> | 82% | 53,882 psi | 90% | 1811 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,211 psi | 49% | 1037 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,814 psi | 70% | 1752 fps | 99.3% |
| IMR 4227 | <<locked>> | 96% | 52,112 psi | 87% | 1808 fps | 100% |
| Lovex D060 | <<locked>> | 90% | 53,432 psi | 89% | 1844 fps | 100% |
| Lovex D063 | <<locked>> | 86% | 53,461 psi | 89% | 1831 fps | 100% |
| Lovex S040 | <<locked>> | 82% | 52,692 psi | 88% | 1713 fps | 100% |
| Lovex S053 | <<locked>> | 98% | 52,388 psi | 87% | 1801 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 42,467 psi | 71% | 1808 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,747 psi | 48% | 1063 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 53,838 psi | 90% | 1864 fps | 100% |
| Shooters World Blackout | <<locked>> | 86% | 53,461 psi | 89% | 1831 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 90% | 53,432 psi | 89% | 1844 fps | 100% |
| Shooters World SOCOM | <<locked>> | 88% | 51,126 psi | 85% | 1798 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 50,792 psi | 85% | 1680 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 39,639 psi | 66% | 1745 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 92% | 52,837 psi | 88% | 1742 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 46,180 psi | 77% | 1795 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 36,811 psi | 61% | 1693 fps | 97.6% |
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% | 29,544 psi | 49% | 1545 fps | 95.5% |
| Accurate 5744 | <<locked>> | 80% | 47,268 psi | 79% | 1778 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 94% | 38,870 psi | 65% | 1663 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 43,236 psi | 72% | 1709 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 39,871 psi | 66% | 1611 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 25,295 psi | 42% | 1535 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 98% | 39,900 psi | 67% | 1768 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 96% | 27,238 psi | 45% | 1604 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 27,949 psi | 47% | 1604 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 26,890 psi | 45% | 1529 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 38,754 psi | 65% | 1690 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 92% | 40,683 psi | 68% | 1693 fps | 95.1% |
| Hodgdon LilGun | <<locked>> | 80% | 50,343 psi | 84% | 1781 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,480 psi | 36% | 925 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 26,963 psi | 45% | 1519 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 32,518 psi | 54% | 1578 fps | 98.8% |
| Lovex D060 | 31.6 gr | 80% | 40,306 psi | 67% | 1690 fps | 99% |
| Lovex D063 | <<locked>> | 80% | 44,077 psi | 73% | 1736 fps | 99.5% |
| Lovex S040 | <<locked>> | 80% | 49,545 psi | 83% | 1683 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 31,676 psi | 53% | 1565 fps | 100% |
| Norma 200 | <<locked>> | 84% | 26,020 psi | 43% | 1562 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,045 psi | 35% | 948 fps | 100% |
| ReloadSwiss RS 36 | 32.9 gr | 80% | 31,256 psi | 52% | 1594 fps | 98.5% |
| Shooters World Blackout | <<locked>> | 80% | 44,077 psi | 73% | 1736 fps | 99.5% |
| Shooters World Buffalo Rifle | 31.6 gr | 80% | 40,306 psi | 67% | 1690 fps | 99% |
| Shooters World SOCOM | <<locked>> | 80% | 39,508 psi | 66% | 1673 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,139 psi | 50% | 1457 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 35,317 psi | 59% | 1686 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 37,376 psi | 62% | 1591 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 25,686 psi | 43% | 1516 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 92% | 29,138 psi | 49% | 1575 fps | 95.3% |
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 31 powders for .458 x 2'' American loaded with the .458 | 450gr | CamPro SOCOM. ReloadSwiss RS 36 delivers the highest muzzle velocity at 1,864 fps; across all powders the maximum-charge window runs from 1,037 fps to 1,864 fps. Accurate LT-30 gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (414 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. Accurate LT-30, ADI AR 2207, ADI AR 2219 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. Shooters World Buffalo Rifle, Lovex D060, ReloadSwiss RS 36 rank at the top here: for .458 x 2'' American with the .458 | 450gr | CamPro SOCOM 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.