Load Specifications
Bullet:.458 | 500gr | Speer TBSS
Bullet Manufacturer:Speer
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:1:6.0
Load data in caliber .460 Weath. Mag. with .458 | 500gr | Speer TBSS bullet and 110 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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% | 55,564 psi | 87% | 2280 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,305 psi | 90% | 2346 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,537 psi | 90% | 2343 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,825 psi | 87% | 2365 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,652 psi | 89% | 2365 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,683 psi | 64% | 2247 fps | 97.7% |
| Accurate 4064 | <<locked>> | 92% | 57,406 psi | 90% | 2388 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 2480 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 54,447 psi | 85% | 2379 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,259 psi | 87% | 2379 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 2372 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,884 psi | 89% | 2375 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,520 psi | 85% | 2303 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 57,609 psi | 90% | 2536 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 48,283 psi | 76% | 2372 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,288 psi | 87% | 2398 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,970 psi | 88% | 2418 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 54,650 psi | 86% | 2480 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,811 psi | 87% | 2513 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 47,601 psi | 75% | 2365 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 2277 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 34,563 psi | 54% | 2192 fps | 96.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2415 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 57,653 psi | 90% | 2444 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 55,927 psi | 88% | 2415 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,912 psi | 88% | 2395 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,230 psi | 87% | 2313 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,188 psi | 88% | 2405 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,534 psi | 85% | 2448 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 57,638 psi | 90% | 2356 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 56,956 psi | 89% | 2431 fps | 100% |
| Hodgdon H414 | <<locked>> | 98% | 56,246 psi | 88% | 2480 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 96% | 56,971 psi | 89% | 2444 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 86% | 54,984 psi | 86% | 2385 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,923 psi | 80% | 2372 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,157 psi | 85% | 2418 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,811 psi | 89% | 2520 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,650 psi | 56% | 1404 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,101 psi | 88% | 2388 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,056 psi | 86% | 2362 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,998 psi | 86% | 2365 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,911 psi | 86% | 2352 fps | 99% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2421 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,563 psi | 86% | 2379 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 2428 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 57,406 psi | 90% | 2444 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,884 psi | 89% | 2375 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,188 psi | 90% | 2362 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 57,711 psi | 90% | 2395 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,377 psi | 90% | 2352 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,781 psi | 86% | 2359 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,188 psi | 90% | 2415 fps | 99.8% |
| Lovex S070 | <<locked>> | 98% | 54,549 psi | 85% | 2405 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 33,910 psi | 53% | 2126 fps | 95.8% |
| Norma 201 | <<locked>> | 88% | 56,623 psi | 89% | 2369 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,145 psi | 90% | 2369 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,143 psi | 86% | 2408 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 2470 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 43,439 psi | 68% | 2379 fps | 97.3% |
| Norma URPᴾ | <<locked>> | 100% | 55,883 psi | 88% | 2467 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 55,622 psi | 87% | 2434 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2470 fps | 99.6% |
| Ramshot TAC | <<locked>> | 86% | 57,087 psi | 89% | 2405 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,739 psi | 89% | 2415 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,711 psi | 90% | 2379 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1440 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,478 psi | 89% | 2352 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,174 psi | 90% | 2418 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,492 psi | 89% | 2477 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 55,709 psi | 87% | 2507 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 56,521 psi | 89% | 2503 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2530 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 57,682 psi | 90% | 2346 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,072 psi | 89% | 2369 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 55,767 psi | 87% | 2408 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2349 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 46,195 psi | 72% | 2349 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 96% | 55,912 psi | 88% | 2395 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,188 psi | 90% | 2415 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 57,711 psi | 90% | 2395 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,781 psi | 86% | 2359 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,549 psi | 85% | 2405 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 57,319 psi | 90% | 2461 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,579 psi | 87% | 2385 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,173 psi | 88% | 2398 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,853 psi | 86% | 2270 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,897 psi | 86% | 2274 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 57,624 psi | 90% | 2375 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 45,774 psi | 72% | 2346 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 54,534 psi | 85% | 2362 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,450 psi | 90% | 2306 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,100 psi | 86% | 2375 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 56,086 psi | 88% | 2405 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2425 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 46,717 psi | 73% | 2333 fps | 97.5% |
| Vihtavuori N130 | <<locked>> | 82% | 54,723 psi | 86% | 2234 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,114 psi | 86% | 2254 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,985 psi | 89% | 2329 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,580 psi | 90% | 2346 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,493 psi | 90% | 2382 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 54,926 psi | 86% | 2418 fps | 100% |
| Vihtavuori N530 | <<locked>> | 86% | 57,464 psi | 90% | 2375 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,666 psi | 87% | 2352 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,421 psi | 90% | 2470 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,772 psi | 67% | 2336 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,027 psi | 86% | 2398 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 57,392 psi | 90% | 2418 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 56,376 psi | 88% | 2484 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,896 psi | 55% | 2297 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,144 psi | 88% | 2408 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% | 49,182 psi | 77% | 2205 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,737 psi | 84% | 2306 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,814 psi | 66% | 2152 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,849 psi | 77% | 2283 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,002 psi | 64% | 2139 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 33,257 psi | 52% | 2113 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,552 psi | 62% | 2156 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 28,935 psi | 45% | 2024 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 45,237 psi | 71% | 2251 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 38,551 psi | 60% | 2133 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 42,859 psi | 67% | 2280 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,326 psi | 74% | 2251 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 47,848 psi | 75% | 2228 fps | 100% |
| Alliant Power Pro 2000-MR | 91.1 gr | 80% | 41,089 psi | 64% | 2293 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 42,612 psi | 67% | 2280 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,159 psi | 60% | 2152 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,973 psi | 64% | 2205 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,791 psi | 47% | 2037 fps | 96.1% |
| Alliant Reloder-17 | 89.7 gr | 80% | 32,909 psi | 52% | 2139 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 42,047 psi | 66% | 2274 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 25,686 psi | 40% | 1969 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 32,576 psi | 51% | 2146 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 30,864 psi | 48% | 2156 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,309 psi | 69% | 2260 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 37,797 psi | 59% | 2159 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 38,769 psi | 61% | 2136 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,037 psi | 77% | 2238 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,122 psi | 72% | 2277 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,923 psi | 80% | 2402 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 54,128 psi | 85% | 2316 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,653 psi | 61% | 2162 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 35,665 psi | 56% | 2159 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 41,684 psi | 65% | 2221 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 45,672 psi | 72% | 2260 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,238 psi | 43% | 1955 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,582 psi | 65% | 2244 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 37,449 psi | 59% | 2215 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 42% | 1253 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,787 psi | 69% | 2221 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 45,484 psi | 71% | 2244 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,451 psi | 63% | 2159 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,815 psi | 67% | 2175 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 38,725 psi | 61% | 2159 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 37,942 psi | 59% | 2119 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 28,282 psi | 44% | 1991 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 41,959 psi | 66% | 2228 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 47,326 psi | 74% | 2251 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 53,476 psi | 84% | 2320 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,440 psi | 70% | 2231 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,281 psi | 71% | 2195 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 40,422 psi | 63% | 2159 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 33,185 psi | 52% | 2034 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 35,534 psi | 56% | 2103 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 31,763 psi | 50% | 2083 fps | 95% |
| Norma 201 | <<locked>> | 80% | 44,324 psi | 69% | 2208 fps | 100% |
| Norma 202 | <<locked>> | 80% | 44,672 psi | 70% | 2211 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,321 psi | 63% | 2195 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 43,497 psi | 68% | 2277 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 38,174 psi | 60% | 2280 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 29,573 psi | 46% | 2028 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 39,798 psi | 62% | 2211 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 32,779 psi | 51% | 2103 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 47,094 psi | 74% | 2270 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,717 psi | 73% | 2283 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,908 psi | 80% | 2297 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 42% | 1283 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,982 psi | 83% | 2313 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,943 psi | 61% | 2146 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,163 psi | 68% | 2293 fps | 99.7% |
| ReloadSwiss RS 60 | 89.7 gr | 80% | 34,998 psi | 55% | 2192 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 28,819 psi | 45% | 2037 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 30,995 psi | 49% | 2090 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 48,399 psi | 76% | 2231 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,235 psi | 66% | 2169 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 35,665 psi | 56% | 2113 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 47,355 psi | 74% | 2306 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 96% | 40,553 psi | 64% | 2254 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 38,769 psi | 61% | 2136 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,185 psi | 52% | 2034 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,440 psi | 70% | 2231 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,422 psi | 63% | 2159 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 35,534 psi | 56% | 2103 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,492 psi | 57% | 2156 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,382 psi | 71% | 2247 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,714 psi | 69% | 2231 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,774 psi | 72% | 2159 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,159 psi | 60% | 2054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 36,738 psi | 58% | 2073 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 42,844 psi | 67% | 2297 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 51,024 psi | 80% | 2320 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,252 psi | 71% | 2159 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,150 psi | 71% | 2244 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 36,419 psi | 57% | 2116 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 26,455 psi | 41% | 1991 fps | 98.1% |
| Somchem S385 | <<locked>> | 94% | 38,595 psi | 60% | 2198 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 51,619 psi | 81% | 2198 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,137 psi | 72% | 2149 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,916 psi | 66% | 2146 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,351 psi | 66% | 2159 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,679 psi | 54% | 2064 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 30,821 psi | 48% | 2028 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 80% | 47,355 psi | 74% | 2247 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,698 psi | 64% | 2156 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,284 psi | 47% | 2031 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 25,701 psi | 40% | 1985 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,574 psi | 48% | 2008 fps | 98.2% |
| Winchester 748 | <<locked>> | 80% | 47,094 psi | 74% | 2290 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 35,752 psi | 56% | 2159 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 25,527 psi | 40% | 2031 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,192 psi | 68% | 2234 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 110 powders for .460 Weath. Mag. loaded with the .458 | 500gr | Speer TBSS. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,536 fps; across all powders the maximum-charge window runs from 1,404 fps to 2,536 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 500.0 gr projectile in 0.458" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .460 Weath. Mag. with the .458 | 500gr | Speer TBSS 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.