Load Specifications
Load data in caliber .416 Taylor Mag. with .415 | 400gr | Rhino Solid Shank bullet and 94 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R 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.
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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 1680 | <<locked>> | 82% | 56,550 psi | 89% | 2103 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 56,420 psi | 88% | 2165 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 57,667 psi | 90% | 2251 fps | 99.3% |
| Accurate 2230 | <<locked>> | 84% | 54,389 psi | 85% | 2215 fps | 99.2% |
| Accurate 2460 | <<locked>> | 90% | 54,984 psi | 86% | 2192 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 2215 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,883 psi | 88% | 2238 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2208 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 57,624 psi | 90% | 2126 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 54,723 psi | 86% | 2110 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 55,201 psi | 87% | 2241 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 84% | 55,521 psi | 87% | 2106 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 2195 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 88% | 57,479 psi | 90% | 2228 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 54,882 psi | 86% | 2208 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 96% | 57,043 psi | 89% | 2224 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 56,101 psi | 88% | 2287 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,549 psi | 85% | 2326 fps | 99.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 51,068 psi | 80% | 2208 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 90% | 56,652 psi | 89% | 2172 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 2267 fps | 99.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 45,208 psi | 71% | 2208 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 56,550 psi | 89% | 2119 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 56,202 psi | 88% | 2133 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,694 psi | 86% | 2254 fps | 98.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 51,024 psi | 80% | 2221 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 94% | 57,406 psi | 90% | 2195 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 96% | 56,492 psi | 89% | 2274 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 92% | 54,810 psi | 86% | 2306 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 90% | 55,796 psi | 87% | 2211 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 56,869 psi | 89% | 2234 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 53,069 psi | 83% | 2228 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 84% | 56,231 psi | 88% | 2126 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 55,593 psi | 87% | 2251 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,201 psi | 57% | 2001 fps | 96.5% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2313 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,142 psi | 54% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 57,319 psi | 90% | 2251 fps | 99.8% |
| IMR 3031 | <<locked>> | 98% | 57,624 psi | 90% | 2270 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 55,564 psi | 87% | 2218 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 98% | 57,058 psi | 89% | 2205 fps | 96.4% |
| IMR 4198 | <<locked>> | 90% | 57,319 psi | 90% | 2136 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2293 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 94% | 54,882 psi | 86% | 2208 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 84% | 55,085 psi | 86% | 2198 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 54,766 psi | 86% | 2198 fps | 100% |
| Lovex D073.6 | <<locked>> | 98% | 57,014 psi | 89% | 2260 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 56,188 psi | 88% | 2185 fps | 99.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 2215 fps | 99.9% |
| Norma 200 | <<locked>> | 86% | 56,869 psi | 89% | 2152 fps | 100% |
| Norma 201 | <<locked>> | 98% | 57,261 psi | 90% | 2234 fps | 100% |
| Norma 202 | <<locked>> | 98% | 57,348 psi | 90% | 2238 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2257 fps | 99.5% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2280 fps | 99.5% |
| Ramshot TAC | <<locked>> | 94% | 55,550 psi | 87% | 2221 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 54,085 psi | 85% | 2238 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 56,521 psi | 89% | 2215 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,272 psi | 54% | 1302 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 54,882 psi | 86% | 2198 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 54,114 psi | 85% | 2211 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 55,201 psi | 87% | 2320 fps | 99.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2260 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 55,172 psi | 86% | 2185 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2228 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 47,442 psi | 74% | 2169 fps | 99.2% |
| Shooters World AR Plus | <<locked>> | 84% | 55,085 psi | 86% | 2198 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 57,014 psi | 89% | 2260 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,404 psi | 85% | 2215 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 55,230 psi | 87% | 2178 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,448 psi | 87% | 1896 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 54,215 psi | 85% | 2201 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2218 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 57,725 psi | 90% | 2185 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 56,956 psi | 89% | 2241 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 56,884 psi | 89% | 2257 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 56,652 psi | 89% | 2152 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 2113 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 55,883 psi | 88% | 2241 fps | 100% |
| Somchem S335 | <<locked>> | 96% | 55,245 psi | 87% | 2156 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 56,130 psi | 88% | 2238 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 48,689 psi | 76% | 2172 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,751 psi | 54% | 2037 fps | 97.7% |
| Vihtavuori N120 | <<locked>> | 84% | 55,434 psi | 87% | 2064 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 56,521 psi | 89% | 2129 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 56,217 psi | 88% | 2142 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2201 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 54,476 psi | 85% | 2185 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2123 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 41,466 psi | 65% | 2080 fps | 96% |
| Vihtavuori N530 | <<locked>> | 94% | 55,361 psi | 87% | 2208 fps | 99.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2221 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,873 psi | 67% | 2077 fps | 98.1% |
| Winchester 748 | <<locked>> | 96% | 57,479 psi | 90% | 2283 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 98% | 56,405 psi | 88% | 2267 fps | 99.8% |
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 1680 | <<locked>> | 80% | 52,968 psi | 83% | 2067 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 36,840 psi | 58% | 1926 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 47,282 psi | 74% | 2119 fps | 98% |
| Accurate 2230 | <<locked>> | 80% | 47,398 psi | 74% | 2129 fps | 98.4% |
| Accurate 2460 | <<locked>> | 80% | 39,537 psi | 62% | 1998 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 29,153 psi | 46% | 1854 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 34,824 psi | 55% | 1959 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 27,644 psi | 43% | 1837 fps | 98% |
| Accurate LT-30 | <<locked>> | 80% | 45,324 psi | 71% | 1988 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 45,716 psi | 72% | 2001 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 33,620 psi | 53% | 1919 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 49,110 psi | 77% | 2037 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 36,724 psi | 58% | 1962 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 44,150 psi | 69% | 2073 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,520 psi | 56% | 1932 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 33,866 psi | 53% | 1942 fps | 100% |
| Alliant Power Pro 1200-R | 52.6 gr | 80% | 40,596 psi | 64% | 2077 fps | 98.2% |
| Alliant Power Pro 2000-MR | 61.7 gr | 88% | 39,262 psi | 62% | 2096 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 29,211 psi | 46% | 1860 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,959 psi | 66% | 2001 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 33,866 psi | 53% | 1946 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 90% | 32,909 psi | 52% | 1985 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,024 psi | 78% | 2051 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,671 psi | 68% | 1988 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 37,028 psi | 58% | 2001 fps | 95.2% |
| Bofors RP3 | <<locked>> | 84% | 30,182 psi | 47% | 1896 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,840 psi | 59% | 1936 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,112 psi | 52% | 1946 fps | 97.5% |
| Hodgdon CFE223 | 57.4 gr | 80% | 36,564 psi | 57% | 2034 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 40,393 psi | 63% | 2021 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 40,669 psi | 64% | 2034 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 92% | 41,089 psi | 64% | 2064 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 49,937 psi | 78% | 2057 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 33,750 psi | 53% | 1929 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,069 psi | 53% | 1962 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 30,124 psi | 47% | 1896 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,208 psi | 40% | 1132 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,808 psi | 51% | 1896 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 32,460 psi | 51% | 1939 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 34,171 psi | 54% | 1913 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 94% | 50,604 psi | 79% | 2126 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 42,989 psi | 67% | 1975 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 32,489 psi | 51% | 1932 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 35,520 psi | 56% | 1932 fps | 97.4% |
| Lovex D073.4 | <<locked>> | 80% | 48,051 psi | 75% | 2116 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 39,233 psi | 61% | 1998 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 31,314 psi | 49% | 1903 fps | 98% |
| Lovex S060 | <<locked>> | 80% | 34,925 psi | 55% | 1883 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 29,631 psi | 46% | 1837 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 47,282 psi | 74% | 2051 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,054 psi | 52% | 1890 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 32,866 psi | 52% | 1906 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 33,170 psi | 52% | 1939 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 86% | 35,041 psi | 55% | 1985 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 42,946 psi | 67% | 2054 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,113 psi | 53% | 1942 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 38,653 psi | 61% | 1972 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,425 psi | 40% | 1161 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,016 psi | 63% | 2005 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 47,703 psi | 75% | 2133 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 34,795 psi | 55% | 2014 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 27,369 psi | 43% | 1864 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 36,608 psi | 57% | 1932 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 31,546 psi | 49% | 1857 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 30,269 psi | 47% | 1893 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 48,051 psi | 75% | 2116 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,314 psi | 49% | 1903 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 29,631 psi | 46% | 1837 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,308 psi | 66% | 2014 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,980 psi | 78% | 1841 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 44,367 psi | 70% | 2080 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 34,098 psi | 53% | 1972 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,598 psi | 67% | 2011 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 40,538 psi | 64% | 2028 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 34,316 psi | 54% | 1936 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,998 psi | 55% | 1870 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,384 psi | 44% | 1768 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 37,594 psi | 59% | 1995 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 34,316 psi | 54% | 1877 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 32,851 psi | 51% | 1903 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 31,662 psi | 50% | 1903 fps | 95.5% |
| Somchem S365 | <<locked>> | 94% | 29,037 psi | 46% | 1913 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 49,110 psi | 77% | 1998 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 39,755 psi | 62% | 1932 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,911 psi | 55% | 1877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 29,979 psi | 47% | 1854 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 31,067 psi | 49% | 1857 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 84% | 28,239 psi | 44% | 1818 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 98% | 38,972 psi | 61% | 2041 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 35,288 psi | 55% | 1929 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 29,718 psi | 47% | 1847 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 33,185 psi | 52% | 1913 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 33,939 psi | 53% | 1959 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 31,212 psi | 49% | 1896 fps | 95.3% |
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 94 powders for .416 Taylor Mag. loaded with the .415 | 400gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,326 fps; across all powders the maximum-charge window runs from 1,273 fps to 2,326 fps. Accurate 2495 gives the best case fill at 100 %, and 94 of the 94 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 400.0 gr projectile in 0.415" calls for a 1:22.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Alliant Power Pro 2000-MR rank at the top here: for .416 Taylor Mag. with the .415 | 400gr | Rhino Solid Shank 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.