Load Specifications
Bullet:.458 | 500gr | Barnes X S
Bullet Manufacturer:Barnes
Bullet Weight:500 gr
Bullet Diameter:0.458"
Bullet Length:<<locked>>
Caliber:.460 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:141.1 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:21.5
Load data in caliber .460 Weath. Mag. with .458 | 500gr | Barnes X S bullet and 108 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 54,984 psi | 86% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,521 psi | 89% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,305 psi | 90% | 2280 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,434 psi | 88% | 2323 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,434 psi | 88% | 2323 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,159 psi | 88% | 2287 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,856 psi | 62% | 2172 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 56,797 psi | 89% | 2320 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2395 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 88% | 56,507 psi | 89% | 2343 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 56,898 psi | 89% | 2339 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,448 psi | 87% | 2297 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,275 psi | 88% | 2270 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,740 psi | 90% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,274 psi | 87% | 2444 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 57,276 psi | 90% | 2352 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,029 psi | 89% | 2359 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,624 psi | 90% | 2247 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,520 psi | 85% | 2343 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 2392 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,246 psi | 90% | 2470 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,435 psi | 60% | 2198 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,090 psi | 66% | 2326 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,825 psi | 87% | 2359 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 54,534 psi | 85% | 2339 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,607 psi | 86% | 2313 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,363 psi | 90% | 2280 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,723 psi | 86% | 2333 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,362 psi | 88% | 2411 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 55,535 psi | 87% | 2277 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,361 psi | 87% | 2349 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 55,521 psi | 87% | 2411 fps | 98.8% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2372 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 88% | 57,101 psi | 89% | 2352 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2293 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,709 psi | 87% | 2382 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,462 psi | 85% | 2421 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,824 psi | 56% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,768 psi | 89% | 2336 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,288 psi | 87% | 2310 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,999 psi | 88% | 2316 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,405 psi | 87% | 2293 fps | 98.5% |
| IMR 4198 | <<locked>> | 82% | 56,927 psi | 89% | 2201 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2329 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,057 psi | 88% | 2333 fps | 98.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2270 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 55,767 psi | 87% | 2362 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,448 psi | 87% | 2297 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,449 psi | 88% | 2290 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,434 psi | 88% | 2323 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,101 psi | 88% | 2277 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,826 psi | 89% | 2323 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,695 psi | 87% | 2333 fps | 99.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2362 fps | 98.9% |
| Norma 201 | <<locked>> | 88% | 55,796 psi | 87% | 2297 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,883 psi | 88% | 2297 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,029 psi | 89% | 2372 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 2372 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 42,380 psi | 66% | 2290 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2382 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 92% | 57,058 psi | 89% | 2392 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2382 fps | 99% |
| Ramshot TAC | <<locked>> | 86% | 55,622 psi | 87% | 2323 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,158 psi | 86% | 2336 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,376 psi | 88% | 2303 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,100 psi | 86% | 2280 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,593 psi | 87% | 2333 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,520 psi | 85% | 2395 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,014 psi | 89% | 2464 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,983 psi | 85% | 2415 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 2434 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 57,464 psi | 90% | 2280 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,304 psi | 88% | 2297 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,696 psi | 90% | 2369 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,607 psi | 86% | 2313 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,695 psi | 87% | 2333 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,434 psi | 88% | 2323 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,826 psi | 89% | 2323 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2362 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,317 psi | 87% | 2379 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,288 psi | 85% | 2306 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,708 psi | 86% | 2323 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,029 psi | 89% | 2238 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,710 psi | 89% | 2238 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,072 psi | 88% | 2293 fps | 98.5% |
| Somchem S321 | <<locked>> | 84% | 56,753 psi | 89% | 2333 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,449 psi | 88% | 2241 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,043 psi | 89% | 2336 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,679 psi | 86% | 2326 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,356 psi | 76% | 2343 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 45,426 psi | 71% | 2251 fps | 96.3% |
| Unknown powder | <<locked>> | 98% | 54,882 psi | 86% | 2385 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 56,985 psi | 89% | 2201 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,942 psi | 89% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,651 psi | 87% | 2260 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,130 psi | 88% | 2277 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,753 psi | 87% | 2306 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,217 psi | 88% | 2372 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 86% | 56,130 psi | 88% | 2300 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,566 psi | 90% | 2316 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,448 psi | 87% | 2385 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,510 psi | 65% | 2260 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,536 psi | 89% | 2356 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,217 psi | 88% | 2349 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,521 psi | 87% | 2411 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,635 psi | 54% | 2211 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,637 psi | 87% | 2346 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,863 psi | 77% | 2142 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,214 psi | 83% | 2241 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,728 psi | 67% | 2103 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,673 psi | 73% | 2205 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,673 psi | 73% | 2205 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 44,150 psi | 69% | 2123 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 35,389 psi | 55% | 2093 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,292 psi | 63% | 2103 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,472 psi | 46% | 1975 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 44,744 psi | 70% | 2182 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 38,189 psi | 60% | 2067 fps | 98.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,572 psi | 73% | 2182 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 46,905 psi | 74% | 2165 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 54,215 psi | 85% | 2343 fps | 100% |
| Alliant Power Pro 2000-MR | 82.8 gr | 80% | 40,408 psi | 63% | 2215 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,281 psi | 71% | 2192 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,029 psi | 60% | 2090 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 54,346 psi | 85% | 2211 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,640 psi | 64% | 2139 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,023 psi | 47% | 1975 fps | 95.2% |
| Alliant Reloder-17 | 81.5 gr | 80% | 32,895 psi | 52% | 2077 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,353 psi | 41% | 1916 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 92% | 32,967 psi | 52% | 2136 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,410 psi | 68% | 2188 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 38,043 psi | 60% | 2100 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 41,031 psi | 64% | 2110 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,327 psi | 76% | 2169 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,440 psi | 71% | 2211 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,255 psi | 77% | 2323 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 49,284 psi | 77% | 2201 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,537 psi | 60% | 2096 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 84% | 38,232 psi | 60% | 2146 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 92% | 44,701 psi | 70% | 2208 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 45,136 psi | 71% | 2192 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,760 psi | 44% | 1903 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,653 psi | 61% | 2136 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 41,959 psi | 66% | 2231 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 42% | 1214 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,234 psi | 63% | 2103 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 41,205 psi | 65% | 2129 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,710 psi | 59% | 2047 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 39,798 psi | 62% | 2057 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 53,954 psi | 85% | 2169 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 40,611 psi | 64% | 2129 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,827 psi | 62% | 2090 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 29,559 psi | 46% | 1962 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,568 psi | 65% | 2162 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,572 psi | 73% | 2182 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 52,997 psi | 83% | 2251 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,121 psi | 69% | 2169 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,730 psi | 70% | 2126 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 40,437 psi | 63% | 2100 fps | 99.8% |
| Lovex S065 | <<locked>> | 80% | 33,591 psi | 53% | 1978 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 37,768 psi | 59% | 2080 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 44,382 psi | 70% | 2146 fps | 100% |
| Norma 202 | <<locked>> | 80% | 44,179 psi | 69% | 2146 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,089 psi | 63% | 2129 fps | 99.2% |
| Norma 204 | <<locked>> | 96% | 48,167 psi | 75% | 2283 fps | 95.5% |
| Norma MRP | <<locked>> | 98% | 39,856 psi | 62% | 2241 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 29,907 psi | 47% | 1972 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 39,204 psi | 61% | 2142 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 36,869 psi | 58% | 2126 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 46,311 psi | 73% | 2195 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,716 psi | 72% | 2211 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,082 psi | 78% | 2224 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 43% | 1247 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,851 psi | 81% | 2241 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,769 psi | 61% | 2080 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,061 psi | 66% | 2218 fps | 99.2% |
| ReloadSwiss RS 60 | 81.5 gr | 80% | 34,809 psi | 55% | 2123 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,024 psi | 49% | 2028 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,070 psi | 55% | 2113 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 48,733 psi | 76% | 2172 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,424 psi | 66% | 2110 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 35,969 psi | 56% | 2057 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 41,031 psi | 64% | 2110 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,591 psi | 53% | 1978 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,121 psi | 69% | 2169 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,437 psi | 63% | 2100 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 37,768 psi | 59% | 2080 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,143 psi | 57% | 2090 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,020 psi | 71% | 2178 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,989 psi | 67% | 2159 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,368 psi | 71% | 2093 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,898 psi | 59% | 1995 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,798 psi | 61% | 2051 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 50,140 psi | 79% | 2251 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,107 psi | 71% | 2100 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,309 psi | 69% | 2172 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 36,608 psi | 57% | 2057 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 27,122 psi | 43% | 1942 fps | 97.6% |
| Somchem S385 | <<locked>> | 96% | 40,335 psi | 63% | 2169 fps | 95% |
| Unknown powder | <<locked>> | 80% | 32,227 psi | 51% | 2011 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 50,894 psi | 80% | 2133 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,513 psi | 71% | 2087 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,597 psi | 65% | 2087 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,887 psi | 66% | 2096 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,751 psi | 54% | 2005 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 31,053 psi | 49% | 1969 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 46,760 psi | 73% | 2182 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,350 psi | 63% | 2093 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,530 psi | 48% | 1975 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 27,949 psi | 44% | 1978 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,821 psi | 48% | 1952 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 49,400 psi | 77% | 2264 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 38,232 psi | 60% | 2146 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,281 psi | 41% | 1975 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,112 psi | 82% | 2303 fps | 100% |
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 108 powders for .460 Weath. Mag. loaded with the .458 | 500gr | Barnes X S. Alliant Reloder-17 delivers the highest muzzle velocity at 2,470 fps; across all powders the maximum-charge window runs from 1,362 fps to 2,470 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 500.0 gr projectile in 0.458" calls for a 1:21.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .460 Weath. Mag. with the .458 | 500gr | Barnes X S 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.