Load Specifications
Load data in caliber 9.3 x 62 with .366 | 320gr | Woodleigh PP SN bullet and 96 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 60 and ReloadSwiss RS 52.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 48,298 psi | 85% | 2051 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 49,545 psi | 88% | 2106 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 47,892 psi | 85% | 2096 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 48,631 psi | 86% | 2139 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 50,792 psi | 90% | 2165 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 50,792 psi | 90% | 2165 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,801 psi | 76% | 2133 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 90% | 50,053 psi | 88% | 2163 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 51,126 psi | 90% | 2162 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 49,734 psi | 88% | 2126 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 48,820 psi | 86% | 2112 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 50,807 psi | 90% | 2198 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 48,936 psi | 87% | 2244 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 49,835 psi | 88% | 2176 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 48,472 psi | 86% | 2060 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 50,865 psi | 90% | 2194 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,961 psi | 78% | 2147 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,024 psi | 90% | 2265 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 50,314 psi | 89% | 2051 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,356 psi | 87% | 2174 fps | 98.9% |
| Bofors RP3 | <<locked>> | 96% | 49,821 psi | 88% | 2187 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 48,994 psi | 87% | 2083 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 51,140 psi | 90% | 2188 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,472 psi | 87% | 2218 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 49,705 psi | 88% | 2121 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 50,691 psi | 90% | 2147 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 48,370 psi | 86% | 2155 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 98% | 48,225 psi | 85% | 2200 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 50,430 psi | 89% | 2171 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,147 psi | 71% | 2059 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,646 psi | 86% | 2188 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,215 psi | 62% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 50,604 psi | 89% | 2152 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 51,039 psi | 90% | 2177 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 49,603 psi | 88% | 2129 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 96% | 50,024 psi | 88% | 2112 fps | 96.3% |
| IMR 4198 | <<locked>> | 82% | 49,110 psi | 87% | 2027 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 50,241 psi | 89% | 2139 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 36,970 psi | 65% | 2025 fps | 96.4% |
| IMR 4895 | <<locked>> | 92% | 48,878 psi | 86% | 2178 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 49,734 psi | 88% | 2130 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 49,313 psi | 87% | 2119 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 48,631 psi | 86% | 2146 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 50,705 psi | 90% | 2109 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 49,850 psi | 88% | 2145 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,792 psi | 88% | 2136 fps | 97.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,181 psi | 83% | 2119 fps | 95.8% |
| Norma 201 | <<locked>> | 90% | 49,110 psi | 87% | 2123 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 49,385 psi | 87% | 2130 fps | 100% |
| Norma 203B | <<locked>> | 94% | 50,024 psi | 88% | 2185 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 44,498 psi | 79% | 2137 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 94% | 50,053 psi | 88% | 2205 fps | 99.5% |
| Ramshot TAC | <<locked>> | 88% | 50,009 psi | 88% | 2142 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 48,805 psi | 86% | 2156 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 50,792 psi | 90% | 2133 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 62% | 1306 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 49,371 psi | 87% | 2117 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 49,095 psi | 87% | 2140 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 50,154 psi | 89% | 2241 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 46,949 psi | 83% | 2230 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,758 psi | 77% | 2158 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,339 psi | 80% | 2171 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 88% | 50,357 psi | 89% | 2110 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 49,559 psi | 88% | 2122 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 50,589 psi | 89% | 2178 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,792 psi | 88% | 2136 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 48,631 psi | 86% | 2146 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 49,850 psi | 88% | 2145 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 46,006 psi | 81% | 2113 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,081 psi | 87% | 2091 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 48,138 psi | 85% | 2187 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 49,313 psi | 87% | 2070 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 51,184 psi | 90% | 2162 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 48,443 psi | 86% | 2142 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,298 psi | 85% | 2044 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 50,705 psi | 90% | 2080 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,067 psi | 89% | 2099 fps | 96% |
| Somchem S321 | <<locked>> | 86% | 50,343 psi | 89% | 2158 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 50,299 psi | 89% | 2081 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 50,430 psi | 89% | 2157 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 47,340 psi | 84% | 2139 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,943 psi | 69% | 2097 fps | 99.4% |
| Unknown powderᴾ | <<locked>> | 100% | 49,211 psi | 87% | 2185 fps | 98% |
| Vihtavuori N130 | <<locked>> | 86% | 50,386 psi | 89% | 2046 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 50,459 psi | 89% | 2063 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,167 psi | 85% | 2090 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 48,994 psi | 87% | 2107 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,601 psi | 82% | 2091 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,646 psi | 86% | 2163 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 86% | 49,458 psi | 87% | 2135 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 48,602 psi | 86% | 2130 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,167 psi | 85% | 2204 fps | 98.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,950 psi | 85% | 2129 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 49,443 psi | 87% | 2173 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 48,225 psi | 85% | 2200 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 84% | 49,284 psi | 87% | 2168 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,103 psi | 71% | 1946 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,308 psi | 77% | 2028 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,663 psi | 58% | 1886 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,086 psi | 66% | 1978 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 30,937 psi | 55% | 1877 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 30,937 psi | 55% | 1877 fps | 99.4% |
| Accurate 4350 | <<locked>> | 94% | 34,882 psi | 62% | 2005 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 36,825 psi | 65% | 1965 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 33,504 psi | 59% | 1892 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,827 psi | 69% | 1969 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 37,550 psi | 66% | 1973 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,744 psi | 79% | 2116 fps | 99.4% |
| Alliant Power Pro 2000-MR | 46.7 gr | 82% | 35,288 psi | 62% | 2014 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,269 psi | 54% | 1867 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,643 psi | 81% | 2026 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,837 psi | 58% | 1913 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 34,403 psi | 61% | 1981 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 84% | 29,820 psi | 53% | 1912 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,384 psi | 84% | 2016 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,665 psi | 63% | 1965 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 29,573 psi | 52% | 1867 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,857 psi | 72% | 1970 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,651 psi | 65% | 1982 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,306 psi | 71% | 2083 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 40,930 psi | 72% | 2007 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,297 psi | 84% | 2106 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 34,954 psi | 62% | 1947 fps | 95% |
| Hodgdon H414 | <<locked>> | 96% | 45,223 psi | 80% | 2158 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 37,057 psi | 66% | 1974 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 29,530 psi | 52% | 1863 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,183 psi | 55% | 1903 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,643 psi | 45% | 1135 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,170 psi | 59% | 1883 fps | 96.9% |
| IMR 3031 | <<locked>> | 80% | 32,909 psi | 58% | 1925 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 32,663 psi | 58% | 1864 fps | 95.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 47,253 psi | 84% | 2074 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 46,485 psi | 82% | 1996 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 47,224 psi | 83% | 2096 fps | 95.5% |
| IMR 4831 | <<locked>> | 98% | 34,693 psi | 61% | 1988 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 33,533 psi | 59% | 1936 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 38,827 psi | 69% | 1975 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 43,091 psi | 76% | 2038 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,954 psi | 62% | 1950 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 37,724 psi | 67% | 1921 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 32,503 psi | 57% | 1881 fps | 97.7% |
| Lovex S065 | <<locked>> | 94% | 40,741 psi | 72% | 2022 fps | 95.7% |
| Lovex S070 | <<locked>> | 98% | 44,324 psi | 78% | 2081 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 36,245 psi | 64% | 1933 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 36,114 psi | 64% | 1943 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 32,213 psi | 57% | 1905 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 33,982 psi | 60% | 1975 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 31,676 psi | 56% | 1910 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 38,479 psi | 68% | 1971 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,507 psi | 66% | 1989 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,003 psi | 74% | 2012 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,904 psi | 46% | 1164 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,439 psi | 77% | 2039 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 43,265 psi | 76% | 2059 fps | 95.5% |
| ReloadSwiss RS 52 | 44.2 gr | 80% | 33,678 psi | 60% | 1981 fps | 96.1% |
| ReloadSwiss RS 60 | 44.9 gr | 80% | 28,094 psi | 50% | 1879 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 35,244 psi | 62% | 2027 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 38,899 psi | 69% | 2079 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 39,987 psi | 71% | 1970 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 34,505 psi | 61% | 1897 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 27,731 psi | 49% | 1821 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 40,741 psi | 72% | 2022 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,954 psi | 62% | 1950 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 32,503 psi | 57% | 1881 fps | 97.7% |
| Shooters World SW4350 | <<locked>> | 98% | 43,410 psi | 77% | 2073 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,006 psi | 81% | 2052 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,038 psi | 55% | 1901 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,369 psi | 82% | 2034 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 36,419 psi | 64% | 1948 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,360 psi | 63% | 1942 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,971 psi | 67% | 1904 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,067 psi | 55% | 1805 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 45,397 psi | 80% | 2057 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 41,466 psi | 73% | 2038 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 37,405 psi | 66% | 1909 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,245 psi | 64% | 1953 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 29,080 psi | 51% | 1833 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 26,745 psi | 47% | 1851 fps | 95.6% |
| Unknown powder | <<locked>> | 92% | 37,188 psi | 66% | 2020 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 42,206 psi | 75% | 1946 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,679 psi | 63% | 1870 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,286 psi | 59% | 1886 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,765 psi | 60% | 1890 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 24,758 psi | 44% | 1726 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 90% | 34,896 psi | 62% | 1959 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 40,582 psi | 72% | 2012 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,330 psi | 59% | 1905 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 34,954 psi | 62% | 1997 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,023 psi | 53% | 1843 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 40,393 psi | 71% | 2051 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 45,223 psi | 80% | 2158 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,641 psi | 75% | 2078 fps | 99.1% |
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 96 powders for 9.3 x 62 loaded with the .366 | 320gr | Woodleigh PP SN. Alliant Reloder-17 delivers the highest muzzle velocity at 2,265 fps; across all powders the maximum-charge window runs from 1,273 fps to 2,265 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 320.0 gr projectile in 0.366" calls for a 1:17.0 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 60, ReloadSwiss RS 52 rank at the top here: for 9.3 x 62 with the .366 | 320gr | Woodleigh PP SN 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.