Load Specifications
Load data in caliber .458 Win.Mag. with .458 | 360gr | Rhino Penetrator bullet and 48 powders. The key underlying parameters are shown in the table above.
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>> | 92% | 56,318 psi | 90% | 2385 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,744 psi | 72% | 2320 fps | 99.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,603 psi | 80% | 2405 fps | 97.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,822 psi | 53% | 2201 fps | 97.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,670 psi | 68% | 2346 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 98% | 56,362 psi | 90% | 2385 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 96% | 53,563 psi | 86% | 2349 fps | 98% |
| ADI AR 2205 | <<locked>> | 84% | 55,187 psi | 88% | 2257 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 54,969 psi | 88% | 2418 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 53,621 psi | 86% | 2477 fps | 99.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,263 psi | 66% | 2343 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 51,808 psi | 83% | 2428 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 94% | 54,085 psi | 87% | 2395 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,230 psi | 87% | 2382 fps | 99.6% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,283 psi | 77% | 2333 fps | 95.9% |
| Hodgdon CFE BLK | <<locked>> | 82% | 53,954 psi | 87% | 2402 fps | 96.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2444 fps | 99.1% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2467 fps | 98.6% |
| Hodgdon H4198 | <<locked>> | 94% | 55,376 psi | 89% | 2385 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,430 psi | 50% | 1398 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,392 psi | 63% | 2320 fps | 98% |
| IMR 4198ᴾ | <<locked>> | 100% | 53,867 psi | 86% | 2405 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 55,680 psi | 89% | 2356 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 55,579 psi | 89% | 2392 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 54,882 psi | 88% | 2474 fps | 98.1% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 49,879 psi | 80% | 2408 fps | 96.7% |
| Lovex S053 | <<locked>> | 90% | 53,679 psi | 86% | 2306 fps | 100% |
| Norma 200 | <<locked>> | 98% | 55,361 psi | 89% | 2451 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 39,958 psi | 64% | 2283 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,270 psi | 50% | 1430 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 55,042 psi | 88% | 2385 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2421 fps | 97.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,121 psi | 71% | 2316 fps | 97% |
| Shooters World AR Plus | <<locked>> | 96% | 54,882 psi | 88% | 2474 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 55,579 psi | 89% | 2392 fps | 100% |
| Shooters World SOCOM | <<locked>> | 82% | 53,258 psi | 85% | 2329 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 54,375 psi | 87% | 2175 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 53,780 psi | 86% | 2477 fps | 98.7% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2431 fps | 99.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,135 psi | 71% | 2257 fps | 97% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,317 psi | 57% | 2123 fps | 95.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,221 psi | 68% | 2257 fps | 97.6% |
| Vihtavuori N110 | <<locked>> | 86% | 56,362 psi | 90% | 2254 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 55,013 psi | 88% | 2375 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 2346 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,120 psi | 69% | 2264 fps | 99.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,331 psi | 57% | 2215 fps | 98% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,203 psi | 61% | 2224 fps | 96% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 38,203 psi | 61% | 2136 fps | 99.1% |
| Accurate 2015 | <<locked>> | 84% | 27,340 psi | 44% | 1998 fps | 95.1% |
| Accurate 2460 | <<locked>> | 92% | 37,826 psi | 61% | 2228 fps | 95.3% |
| Accurate 2495 | <<locked>> | 94% | 26,876 psi | 43% | 2073 fps | 95.6% |
| Accurate 2520 | <<locked>> | 98% | 39,943 psi | 64% | 2303 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 32,808 psi | 53% | 2021 fps | 95.3% |
| Accurate LT-32 | <<locked>> | 86% | 39,914 psi | 64% | 2149 fps | 95.2% |
| ADI AR 2205 | <<locked>> | 80% | 49,124 psi | 79% | 2185 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 33,895 psi | 54% | 2119 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 33,881 psi | 54% | 2156 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 82% | 23,917 psi | 38% | 1959 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,166 psi | 45% | 2024 fps | 96.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,389 psi | 57% | 2116 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 32,793 psi | 53% | 2051 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 98% | 45,455 psi | 73% | 2293 fps | 95.3% |
| Hodgdon CFE BLK | <<locked>> | 80% | 50,488 psi | 81% | 2352 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 86% | 33,141 psi | 53% | 2139 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 90% | 37,739 psi | 61% | 2238 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 36,245 psi | 58% | 2096 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,148 psi | 37% | 1247 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 30,937 psi | 50% | 2146 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 30,545 psi | 49% | 2028 fps | 98.3% |
| IMR 4227 | <<locked>> | 80% | 41,365 psi | 66% | 2169 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 49,516 psi | 79% | 2310 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 41,394 psi | 66% | 2283 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 96% | 43,381 psi | 70% | 2316 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 40,408 psi | 65% | 2133 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,778 psi | 51% | 2093 fps | 98.6% |
| Norma 202 | <<locked>> | 98% | 37,507 psi | 60% | 2241 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,843 psi | 37% | 1276 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,582 psi | 65% | 2195 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 42,090 psi | 67% | 2290 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 94% | 37,014 psi | 59% | 2195 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 88% | 41,394 psi | 66% | 2283 fps | 95.5% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,516 psi | 79% | 2310 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 50,024 psi | 80% | 2290 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,869 psi | 61% | 1975 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 38,638 psi | 62% | 2251 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 30,792 psi | 49% | 2064 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 36,709 psi | 59% | 2133 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 33,344 psi | 53% | 2083 fps | 95% |
| Somchem S335 | <<locked>> | 92% | 33,228 psi | 53% | 2096 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 47,485 psi | 76% | 2156 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,084 psi | 55% | 2090 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,398 psi | 44% | 1959 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 86% | 28,500 psi | 46% | 1988 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 92% | 27,847 psi | 45% | 2051 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 98% | 35,940 psi | 58% | 2185 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 48 powders for .458 Win.Mag. loaded with the .458 | 360gr | Rhino Penetrator. ADI AR 2219 delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,398 fps to 2,477 fps. Accurate 2015 gives the best case fill at 100 %, and 48 of the 48 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. 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.