Load Specifications
Bullet:.366 | 325gr | Norma ORYX
Bullet Manufacturer:Norma
Bullet Weight:325 gr
Bullet Diameter:0.366"
Bullet Length:<<locked>>
Caliber:9.3 x 66 Sako load data
Case Length (l3):2.59"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:6.0
Load data in caliber 9.3 x 66 Sako with .366 | 325gr | Norma ORYX bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Alliant Reloder-17.
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>> | 86% | 53,592 psi | 89% | 2136 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,822 psi | 86% | 2162 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,416 psi | 85% | 2159 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,359 psi | 89% | 2211 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,256 psi | 85% | 2156 fps | 96.8% |
| Accurate 4064 | <<locked>> | 92% | 51,111 psi | 85% | 2195 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,705 psi | 83% | 2257 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 52,402 psi | 87% | 2221 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 53,490 psi | 89% | 2221 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,967 psi | 86% | 2185 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 51,967 psi | 86% | 2159 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,534 psi | 89% | 2264 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 51,561 psi | 86% | 2316 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,924 psi | 88% | 2238 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,432 psi | 89% | 2136 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,592 psi | 89% | 2254 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2260 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,982 psi | 88% | 2336 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,780 psi | 58% | 2060 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,985 psi | 63% | 2172 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,909 psi | 86% | 2238 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 53,098 psi | 88% | 2251 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,824 psi | 89% | 2224 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,867 psi | 89% | 2169 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,809 psi | 89% | 2247 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,243 psi | 87% | 2287 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 52,344 psi | 87% | 2172 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,200 psi | 88% | 2198 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,447 psi | 90% | 2264 fps | 99.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,200 psi | 88% | 2303 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 96% | 51,242 psi | 85% | 2228 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 52,924 psi | 88% | 2228 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,034 psi | 75% | 2165 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 51,619 psi | 86% | 2257 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,331 psi | 90% | 2333 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 59% | 1312 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,114 psi | 90% | 2231 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 52,634 psi | 87% | 2211 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,953 psi | 88% | 2205 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,258 psi | 88% | 2192 fps | 97.9% |
| IMR 4198 | <<locked>> | 82% | 53,940 psi | 90% | 2103 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,212 psi | 83% | 2205 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,547 psi | 87% | 2211 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,529 psi | 79% | 2215 fps | 99.3% |
| IMR 4895 | <<locked>> | 90% | 51,561 psi | 86% | 2241 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 51,967 psi | 86% | 2185 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 51,605 psi | 86% | 2169 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 51,605 psi | 86% | 2201 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,591 psi | 87% | 2165 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 52,460 psi | 87% | 2201 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 51,459 psi | 85% | 2205 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,967 psi | 86% | 2231 fps | 98% |
| Norma 201 | <<locked>> | 88% | 51,401 psi | 85% | 2178 fps | 100% |
| Norma 202 | <<locked>> | 88% | 51,808 psi | 86% | 2182 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,750 psi | 88% | 2247 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 49,443 psi | 82% | 2251 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 53,040 psi | 88% | 2270 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,530 psi | 81% | 2247 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 51,837 psi | 86% | 2198 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,126 psi | 85% | 2215 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,649 psi | 87% | 2185 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,694 psi | 59% | 1345 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,314 psi | 85% | 2165 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,605 psi | 86% | 2208 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,766 psi | 89% | 2310 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,026 psi | 88% | 2336 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,385 psi | 82% | 2277 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,009 psi | 83% | 2300 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 52,649 psi | 87% | 2162 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 51,764 psi | 86% | 2175 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,982 psi | 88% | 2244 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,824 psi | 89% | 2224 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,459 psi | 85% | 2205 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,605 psi | 86% | 2201 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 52,460 psi | 87% | 2201 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,967 psi | 86% | 2231 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 51,155 psi | 85% | 2254 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,331 psi | 90% | 2152 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,447 psi | 89% | 2221 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,288 psi | 90% | 2244 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,316 psi | 89% | 2129 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,040 psi | 88% | 2129 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,822 psi | 86% | 2169 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 52,794 psi | 88% | 2215 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 52,460 psi | 87% | 2129 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,011 psi | 88% | 2215 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 53,345 psi | 89% | 2241 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,048 psi | 73% | 2211 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 53,403 psi | 89% | 2100 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,417 psi | 89% | 2116 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,259 psi | 90% | 2178 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,040 psi | 86% | 2162 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 51,634 psi | 86% | 2188 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,895 psi | 86% | 2244 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 52,170 psi | 87% | 2182 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,519 psi | 89% | 2201 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,850 psi | 84% | 2254 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,014 psi | 61% | 2116 fps | 98.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2238 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 51,416 psi | 85% | 2221 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,417 psi | 89% | 2303 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,893 psi | 51% | 2047 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,737 psi | 89% | 2247 fps | 100% |
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% | 44,614 psi | 74% | 2031 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,646 psi | 81% | 2123 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,260 psi | 62% | 1978 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,743 psi | 73% | 2093 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 45,252 psi | 75% | 2073 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 35,273 psi | 59% | 1975 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,009 psi | 52% | 1959 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 41,017 psi | 68% | 2060 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,954 psi | 58% | 1946 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,076 psi | 72% | 2067 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 42,844 psi | 71% | 2054 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,125 psi | 83% | 2221 fps | 100% |
| Alliant Power Pro 2000-MR | 50.5 gr | 80% | 36,970 psi | 61% | 2083 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,214 psi | 57% | 1962 fps | 98.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,357 psi | 84% | 2103 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,869 psi | 61% | 2011 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,140 psi | 53% | 1969 fps | 95.6% |
| Alliant Reloder-17 | 49.7 gr | 80% | 29,472 psi | 49% | 1936 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 92% | 27,398 psi | 46% | 1890 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 33,141 psi | 55% | 2070 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,827 psi | 66% | 2064 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 33,591 psi | 56% | 1965 fps | 98.5% |
| Bofors RP7 | <<locked>> | 92% | 44,802 psi | 74% | 2103 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,063 psi | 75% | 2057 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,350 psi | 69% | 2087 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,455 psi | 76% | 2195 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 49,052 psi | 81% | 2136 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,690 psi | 83% | 2159 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,577 psi | 57% | 1965 fps | 96% |
| Hodgdon H414 | <<locked>> | 92% | 41,002 psi | 68% | 2126 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 92% | 45,223 psi | 75% | 2142 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,350 psi | 69% | 2070 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,572 psi | 46% | 1847 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,101 psi | 62% | 2047 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 43,903 psi | 73% | 2185 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 44% | 1168 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,668 psi | 66% | 2031 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 40,683 psi | 68% | 2064 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,680 psi | 61% | 1969 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 41,800 psi | 69% | 2028 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,792 psi | 84% | 2067 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 44,585 psi | 74% | 2123 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 41,307 psi | 69% | 2051 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 30,298 psi | 50% | 1926 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,710 psi | 63% | 2034 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 43,076 psi | 72% | 2067 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 48,443 psi | 80% | 2133 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,552 psi | 66% | 2044 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 41,481 psi | 69% | 2011 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 36,463 psi | 61% | 1975 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 35,824 psi | 60% | 1969 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 40,654 psi | 68% | 2070 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,321 psi | 67% | 2024 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 40,335 psi | 67% | 2031 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,230 psi | 60% | 2001 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 31,850 psi | 53% | 1962 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,563 psi | 59% | 2011 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 37,739 psi | 63% | 2077 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 42,801 psi | 71% | 2070 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,974 psi | 70% | 2087 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,441 psi | 77% | 2106 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 44% | 1198 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,182 psi | 80% | 2126 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 37,434 psi | 62% | 1995 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,101 psi | 63% | 2087 fps | 98.3% |
| ReloadSwiss RS 60 | 49.7 gr | 80% | 31,386 psi | 52% | 1988 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,054 psi | 55% | 2014 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 35,984 psi | 60% | 2064 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 44,092 psi | 73% | 2051 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,348 psi | 64% | 1988 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 31,691 psi | 53% | 1923 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 92% | 44,802 psi | 74% | 2103 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 35,824 psi | 60% | 1969 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,552 psi | 66% | 2044 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,463 psi | 61% | 1975 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 92% | 40,654 psi | 68% | 2070 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,576 psi | 54% | 1959 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,169 psi | 85% | 2116 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,002 psi | 68% | 2051 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,392 psi | 65% | 2037 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,771 psi | 69% | 1985 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,519 psi | 57% | 1886 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 39,697 psi | 66% | 2005 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 46,151 psi | 77% | 2129 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,394 psi | 69% | 1988 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,625 psi | 67% | 2051 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 32,764 psi | 54% | 1929 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 23,612 psi | 39% | 1795 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 47,268 psi | 79% | 2028 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,003 psi | 70% | 1978 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,449 psi | 62% | 1972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,218 psi | 63% | 1982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,024 psi | 52% | 1880 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 31,372 psi | 52% | 1919 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 42,975 psi | 71% | 2064 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 36,622 psi | 61% | 1975 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 32,648 psi | 54% | 1965 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 92% | 28,848 psi | 48% | 1949 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,659 psi | 46% | 1821 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 42,177 psi | 70% | 2100 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 41,249 psi | 69% | 2129 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 27,238 psi | 45% | 1946 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,740 psi | 64% | 2041 fps | 99.2% |
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 103 powders for 9.3 x 66 Sako loaded with the .366 | 325gr | Norma ORYX. Alliant Reloder-17 delivers the highest muzzle velocity at 2,336 fps; across all powders the maximum-charge window runs from 1,312 fps to 2,336 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 325.0 gr projectile in 0.366" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for 9.3 x 66 Sako with the .366 | 325gr | Norma ORYX 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.