Load Specifications
Load data in caliber .450 Rigby with .458 | 450gr | Barnes TSX FB bullet and 92 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, ReloadSwiss RS 52 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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 50,415 psi | 87% | 2270 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 52,112 psi | 90% | 2333 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 49,995 psi | 86% | 2320 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 49,777 psi | 86% | 2339 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 49,864 psi | 86% | 2356 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,177 psi | 73% | 2310 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 82% | 50,923 psi | 88% | 2224 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,358 psi | 89% | 2241 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 49,588 psi | 85% | 2346 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 96% | 50,531 psi | 87% | 2343 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 82% | 50,908 psi | 88% | 2326 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,301 psi | 90% | 2352 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 51,619 psi | 89% | 2336 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 50,067 psi | 86% | 2388 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 52,011 psi | 90% | 2480 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 49,356 psi | 85% | 2359 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 84% | 50,734 psi | 87% | 2280 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 50,270 psi | 87% | 2375 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,163 psi | 74% | 2323 fps | 97.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,530 psi | 85% | 2451 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 49,893 psi | 86% | 2231 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 52,286 psi | 90% | 2402 fps | 98.9% |
| Bofors RP3 | <<locked>> | 96% | 49,168 psi | 85% | 2369 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,459 psi | 89% | 2303 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 50,618 psi | 87% | 2379 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,344 psi | 90% | 2457 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 84% | 49,690 psi | 86% | 2313 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 50,415 psi | 87% | 2336 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,010 psi | 88% | 2379 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 90% | 49,966 psi | 86% | 2356 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,247 psi | 68% | 2224 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 51,576 psi | 89% | 2425 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,330 psi | 59% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,445 psi | 89% | 2359 fps | 99.7% |
| IMR 3031 | <<locked>> | 92% | 52,156 psi | 90% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 50,082 psi | 86% | 2329 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,908 psi | 88% | 2310 fps | 95.9% |
| IMR 4198 | <<locked>> | 84% | 51,547 psi | 89% | 2244 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,727 psi | 70% | 2267 fps | 96.8% |
| IMR 4895 | <<locked>> | 94% | 51,517 psi | 89% | 2405 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 90% | 52,301 psi | 90% | 2352 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 51,880 psi | 89% | 2343 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 51,256 psi | 88% | 2369 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 50,357 psi | 87% | 2293 fps | 99.3% |
| Lovex S062 | <<locked>> | 96% | 52,330 psi | 90% | 2369 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,138 psi | 83% | 2313 fps | 96.9% |
| Norma 201 | <<locked>> | 92% | 51,401 psi | 89% | 2343 fps | 99.9% |
| Norma 202 | <<locked>> | 92% | 51,851 psi | 89% | 2349 fps | 100% |
| Norma 203B | <<locked>> | 94% | 49,400 psi | 85% | 2365 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 42,801 psi | 74% | 2310 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 94% | 49,516 psi | 85% | 2388 fps | 99.2% |
| Ramshot TAC | <<locked>> | 88% | 49,400 psi | 85% | 2320 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,590 psi | 89% | 2382 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 50,270 psi | 87% | 2313 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 60% | 1434 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,112 psi | 90% | 2343 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 51,793 psi | 89% | 2362 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 49,647 psi | 86% | 2428 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 49,545 psi | 85% | 2461 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,279 psi | 73% | 2329 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 43,932 psi | 76% | 2346 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 52,373 psi | 90% | 2329 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 51,721 psi | 89% | 2339 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,141 psi | 90% | 2402 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,138 psi | 83% | 2313 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,256 psi | 88% | 2369 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,330 psi | 90% | 2369 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,040 psi | 90% | 2316 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,198 psi | 88% | 2336 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 50,981 psi | 88% | 2415 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,430 psi | 89% | 2290 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 50,401 psi | 87% | 2343 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 51,097 psi | 88% | 2365 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 50,691 psi | 87% | 2260 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 50,038 psi | 86% | 2257 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 49,792 psi | 86% | 2343 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 49,603 psi | 86% | 2260 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 50,053 psi | 86% | 2339 fps | 99.2% |
| Somchem S355 | <<locked>> | 98% | 49,937 psi | 86% | 2362 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,029 psi | 66% | 2264 fps | 99% |
| Vihtavuori N130 | <<locked>> | 86% | 50,676 psi | 87% | 2234 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 50,662 psi | 87% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 50,444 psi | 87% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,272 psi | 90% | 2333 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,256 psi | 88% | 2346 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,353 psi | 78% | 2313 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 88% | 49,443 psi | 85% | 2310 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 94% | 50,328 psi | 87% | 2329 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,063 psi | 76% | 2313 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,586 psi | 80% | 2306 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 51,721 psi | 89% | 2392 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 50,502 psi | 87% | 2372 fps | 99.7% |
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 2015 | <<locked>> | 80% | 39,291 psi | 68% | 2119 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 42,482 psi | 73% | 2205 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,256 psi | 54% | 2037 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,739 psi | 65% | 2162 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 29,631 psi | 51% | 2021 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 36,579 psi | 63% | 2215 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 47,935 psi | 83% | 2185 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,312 psi | 83% | 2201 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,100 psi | 62% | 2123 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 34,853 psi | 60% | 2087 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 47,659 psi | 82% | 2287 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,116 psi | 66% | 2139 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 36,782 psi | 63% | 2139 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,758 psi | 75% | 2293 fps | 99% |
| Alliant Power Pro 2000-MR | 85 gr | 84% | 37,130 psi | 64% | 2224 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,443 psi | 51% | 2011 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,788 psi | 77% | 2201 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,200 psi | 59% | 2106 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,218 psi | 66% | 2228 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,212 psi | 54% | 2106 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,847 psi | 81% | 2192 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 34,954 psi | 60% | 2119 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 28,514 psi | 49% | 2005 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,263 psi | 69% | 2136 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,781 psi | 62% | 2149 fps | 98.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,508 psi | 68% | 2254 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 80% | 43,526 psi | 75% | 2228 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,063 psi | 76% | 2247 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,073 psi | 67% | 2192 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 36,303 psi | 63% | 2136 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,547 psi | 56% | 2093 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,358 psi | 56% | 2100 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 44% | 1247 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,056 psi | 60% | 2096 fps | 96.9% |
| IMR 3031 | <<locked>> | 80% | 35,056 psi | 60% | 2136 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,345 psi | 59% | 2070 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 47,834 psi | 82% | 2264 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 45,788 psi | 79% | 2172 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 35,694 psi | 62% | 2178 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 32,750 psi | 56% | 2087 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 38,116 psi | 66% | 2139 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 42,163 psi | 73% | 2205 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,040 psi | 59% | 2106 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 37,086 psi | 64% | 2080 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 31,647 psi | 55% | 2031 fps | 96.8% |
| Lovex S065 | <<locked>> | 96% | 42,540 psi | 73% | 2228 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 35,201 psi | 61% | 2087 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 35,230 psi | 61% | 2100 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 31,444 psi | 54% | 2054 fps | 95.2% |
| Norma URP | <<locked>> | 96% | 37,753 psi | 65% | 2221 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 82% | 33,141 psi | 57% | 2106 fps | 95.4% |
| Ramshot TAC | <<locked>> | 82% | 40,567 psi | 70% | 2182 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,912 psi | 64% | 2149 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,307 psi | 71% | 2178 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,556 psi | 44% | 1276 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,902 psi | 74% | 2211 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,513 psi | 78% | 2270 fps | 95.4% |
| ReloadSwiss RS 52 | 78.5 gr | 80% | 32,953 psi | 57% | 2136 fps | 95% |
| ReloadSwiss RS 60 | 79.7 gr | 80% | 27,354 psi | 47% | 2018 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 36,912 psi | 64% | 2231 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,002 psi | 71% | 2290 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 38,783 psi | 67% | 2129 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,518 psi | 58% | 2047 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 84% | 30,676 psi | 53% | 2047 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,540 psi | 73% | 2228 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,040 psi | 59% | 2106 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 31,647 psi | 55% | 2031 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,281 psi | 78% | 2224 fps | 99.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,935 psi | 83% | 2293 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,358 psi | 56% | 2093 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,484 psi | 78% | 2211 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,261 psi | 66% | 2152 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,708 psi | 60% | 2100 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,217 psi | 64% | 2064 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,342 psi | 52% | 1952 fps | 99.2% |
| Somchem S321 | <<locked>> | 80% | 40,654 psi | 70% | 2205 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 36,463 psi | 63% | 2067 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 35,505 psi | 61% | 2110 fps | 96.4% |
| Somchem S355 | <<locked>> | 82% | 30,008 psi | 52% | 2014 fps | 95.2% |
| Somchem S365 | <<locked>> | 90% | 27,659 psi | 48% | 2034 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 42,366 psi | 73% | 2126 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,347 psi | 64% | 2067 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,169 psi | 55% | 2041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,388 psi | 58% | 2051 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 26,658 psi | 46% | 1923 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 94% | 37,333 psi | 64% | 2178 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 37,913 psi | 65% | 2133 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 31,908 psi | 55% | 2037 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 96% | 38,740 psi | 67% | 2224 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,343 psi | 54% | 2031 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 36,651 psi | 63% | 2165 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,620 psi | 58% | 2096 fps | 96.6% |
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 109 powders for .450 Rigby loaded with the .458 | 450gr | Barnes TSX FB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,480 fps; across all powders the maximum-charge window runs from 1,398 fps to 2,480 fps. Accurate 4350 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 450.0 gr projectile in 0.458" calls for a 1:23.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .450 Rigby with the .458 | 450gr | Barnes TSX FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Alliant Reloder-26, Hodgdon H4350 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.