Load Specifications
Load data in caliber .460 Steyr with .458 | 500gr | A-Square LionLoad bullet and 18 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-50, SNPE Vectan SP 13 and Accurate 8700.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 8700 | <<locked>> | 94% | 47,776 psi | 89% | 2687 fps | 98% |
| ADI AR 2217 | <<locked>> | 84% | 47,500 psi | 89% | 2661 fps | 100% |
| ADI AR 2218 | <<locked>> | 88% | 47,427 psi | 88% | 2772 fps | 98.7% |
| ADI AR 2225 | <<locked>> | 86% | 47,834 psi | 89% | 2690 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 45,992 psi | 86% | 2690 fps | 98% |
| Alliant Reloder-50 | <<locked>> | 88% | 46,499 psi | 87% | 2694 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 47,993 psi | 89% | 2674 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 48,414 psi | 90% | 2674 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,363 psi | 71% | 1768 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 48,312 psi | 90% | 2595 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 88% | 47,282 psi | 88% | 2680 fps | 100% |
| Norma 217 | <<locked>> | 86% | 45,527 psi | 85% | 2648 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,523 psi | 74% | 1811 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 46,891 psi | 87% | 2690 fps | 99.5% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 46,383 psi | 86% | 2635 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 82% | 47,906 psi | 89% | 2631 fps | 97.3% |
| Vihtavuori N568 | <<locked>> | 82% | 47,587 psi | 89% | 2697 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 82% | 45,687 psi | 85% | 2694 fps | 97.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 8700 | 218.1 gr | 88% | 38,508 psi | 72% | 2500 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 80% | 41,321 psi | 77% | 2546 fps | 99.5% |
| ADI AR 2218 | <<locked>> | 82% | 38,159 psi | 71% | 2566 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 38,725 psi | 72% | 2523 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 80% | 39,726 psi | 74% | 2556 fps | 96.2% |
| Alliant Reloder-50 | 215.8 gr | 84% | 40,321 psi | 75% | 2562 fps | 95.8% |
| Bofors RP30 | <<locked>> | 80% | 44,831 psi | 84% | 2615 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 80% | 45,121 psi | 84% | 2615 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,892 psi | 54% | 1578 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 80% | 45,310 psi | 84% | 2536 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 80% | 36,172 psi | 67% | 2451 fps | 98.3% |
| Norma 217 | <<locked>> | 80% | 37,028 psi | 69% | 2477 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,805 psi | 56% | 1617 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 43,540 psi | 81% | 2621 fps | 99% |
| SNPE Vectan SP 13 | 213.6 gr | 88% | 40,582 psi | 76% | 2520 fps | 95.6% |
| Vihtavuori N170 | <<locked>> | 80% | 44,831 psi | 84% | 2569 fps | 96.5% |
| Vihtavuori N568 | <<locked>> | 80% | 44,367 psi | 83% | 2635 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 80% | 42,583 psi | 79% | 2628 fps | 96.8% |
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 24 powders for .460 Steyr loaded with the .458 | 500gr | A-Square LionLoad. ADI AR 2218 delivers the highest muzzle velocity at 2,772 fps; across all powders the maximum-charge window runs from 1,768 fps to 2,772 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (370 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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. Alliant Reloder-50, SNPE Vectan SP 13, Accurate 8700 rank at the top here: for .460 Steyr with the .458 | 500gr | A-Square LionLoad they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT 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.