Load Specifications
Load data in caliber 9.3 x 66 Sako with .366 | 300gr | Rhino Solid Shank bullet and 103 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% | 52,518 psi | 87% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 54,302 psi | 90% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,663 psi | 87% | 2267 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,867 psi | 89% | 2316 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,867 psi | 89% | 2316 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 52,518 psi | 87% | 2303 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,353 psi | 74% | 2267 fps | 98% |
| Accurate LT-30 | <<locked>> | 82% | 52,634 psi | 87% | 2169 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,040 psi | 88% | 2188 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 51,401 psi | 85% | 2293 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 96% | 52,344 psi | 87% | 2290 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 52,736 psi | 88% | 2267 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 54,056 psi | 90% | 2297 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 53,693 psi | 89% | 2274 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 52,199 psi | 87% | 2339 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,867 psi | 89% | 2428 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 54,447 psi | 90% | 2346 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 52,736 psi | 88% | 2218 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 52,098 psi | 87% | 2323 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,831 psi | 74% | 2274 fps | 98.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,547 psi | 86% | 2402 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 51,474 psi | 86% | 2172 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 54,070 psi | 90% | 2346 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 51,343 psi | 85% | 2316 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 52,431 psi | 87% | 2283 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 53,214 psi | 88% | 2244 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 52,533 psi | 87% | 2323 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 50,720 psi | 84% | 2352 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 88% | 53,911 psi | 90% | 2280 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 51,851 psi | 86% | 2270 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 53,040 psi | 88% | 2326 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,301 psi | 89% | 2382 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 90% | 51,808 psi | 86% | 2300 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,930 psi | 68% | 2178 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,258 psi | 88% | 2365 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 58% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 52,054 psi | 86% | 2290 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 52,620 psi | 87% | 2306 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,998 psi | 90% | 2300 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 98% | 54,027 psi | 90% | 2274 fps | 96.9% |
| IMR 4198 | <<locked>> | 84% | 53,258 psi | 88% | 2182 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 51,547 psi | 86% | 2274 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 38,101 psi | 63% | 2149 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 53,388 psi | 89% | 2349 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 90% | 54,056 psi | 90% | 2297 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 54,114 psi | 90% | 2287 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 53,534 psi | 89% | 2313 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 51,982 psi | 86% | 2234 fps | 99.7% |
| Lovex S062 | <<locked>> | 96% | 54,447 psi | 90% | 2313 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2267 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,413 psi | 79% | 2247 fps | 96% |
| Norma 201 | <<locked>> | 92% | 53,417 psi | 89% | 2287 fps | 100% |
| Norma 202 | <<locked>> | 92% | 53,780 psi | 89% | 2293 fps | 100% |
| Norma 203B | <<locked>> | 94% | 51,242 psi | 85% | 2313 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 44,744 psi | 74% | 2264 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 94% | 51,430 psi | 85% | 2336 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,092 psi | 73% | 2254 fps | 95.8% |
| Ramshot TAC | <<locked>> | 88% | 51,271 psi | 85% | 2270 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 90% | 53,563 psi | 89% | 2326 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 52,170 psi | 87% | 2260 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 58% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 54,012 psi | 90% | 2283 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 53,635 psi | 89% | 2310 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 51,764 psi | 86% | 2375 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 51,329 psi | 85% | 2402 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,251 psi | 74% | 2287 fps | 97.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,614 psi | 76% | 2300 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 88% | 51,619 psi | 86% | 2238 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,824 psi | 89% | 2283 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 50,966 psi | 85% | 2306 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 52,431 psi | 87% | 2283 fps | 96.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 50,183 psi | 83% | 2267 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 53,534 psi | 89% | 2313 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 54,447 psi | 90% | 2313 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,413 psi | 79% | 2247 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,751 psi | 89% | 2257 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 52,997 psi | 88% | 2280 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,895 psi | 88% | 2359 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,606 psi | 89% | 2234 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 52,373 psi | 87% | 2290 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 52,924 psi | 88% | 2310 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 52,620 psi | 87% | 2205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 51,967 psi | 86% | 2201 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 50,140 psi | 83% | 2221 fps | 96.2% |
| Somchem S321 | <<locked>> | 86% | 51,735 psi | 86% | 2287 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 51,605 psi | 86% | 2205 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 51,909 psi | 86% | 2287 fps | 99.6% |
| Somchem S355 | <<locked>> | 98% | 51,851 psi | 86% | 2306 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,755 psi | 66% | 2224 fps | 99.5% |
| Unknown powderᴾ | <<locked>> | 100% | 49,081 psi | 82% | 2313 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 86% | 52,605 psi | 87% | 2178 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 52,576 psi | 87% | 2192 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 52,895 psi | 88% | 2257 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 54,041 psi | 90% | 2270 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,417 psi | 89% | 2293 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,137 psi | 78% | 2264 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 88% | 51,198 psi | 85% | 2254 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 52,170 psi | 87% | 2274 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,122 psi | 77% | 2270 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,182 psi | 80% | 2254 fps | 99.6% |
| Winchester 748 | <<locked>> | 88% | 54,317 psi | 90% | 2343 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,301 psi | 89% | 2382 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,230 psi | 90% | 2339 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% | 41,220 psi | 68% | 2070 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,469 psi | 74% | 2156 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,620 psi | 56% | 2005 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,174 psi | 63% | 2103 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 38,174 psi | 63% | 2103 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 31,807 psi | 53% | 1991 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 33,794 psi | 56% | 2090 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 49,617 psi | 82% | 2133 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,009 psi | 83% | 2149 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,724 psi | 63% | 2080 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 32,155 psi | 53% | 1959 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 49,342 psi | 82% | 2228 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,740 psi | 66% | 2093 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 38,711 psi | 64% | 2090 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,890 psi | 76% | 2251 fps | 99.5% |
| Alliant Power Pro 2000-MR | 49.5 gr | 80% | 33,866 psi | 56% | 2083 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,067 psi | 52% | 1975 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,688 psi | 78% | 2146 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,692 psi | 56% | 2024 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,389 psi | 59% | 2100 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 84% | 30,647 psi | 51% | 2028 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 48,225 psi | 80% | 2133 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,405 psi | 60% | 2077 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 30,342 psi | 50% | 1975 fps | 96.6% |
| Bofors RP7 | <<locked>> | 98% | 49,400 psi | 82% | 2241 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,843 psi | 70% | 2087 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,594 psi | 62% | 2106 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,307 psi | 69% | 2211 fps | 98% |
| Hodgdon H322 | <<locked>> | 80% | 41,930 psi | 70% | 2126 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,356 psi | 80% | 2228 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 35,969 psi | 60% | 2064 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 46,586 psi | 77% | 2287 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 37,971 psi | 63% | 2090 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,226 psi | 50% | 1972 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,995 psi | 53% | 2021 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 43% | 1207 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,997 psi | 56% | 2005 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 33,910 psi | 56% | 2041 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 31,517 psi | 52% | 1942 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 92% | 45,469 psi | 76% | 2156 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 47,340 psi | 79% | 2113 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 45,745 psi | 76% | 2188 fps | 95.1% |
| IMR 4831 | <<locked>> | 96% | 33,620 psi | 56% | 2064 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 34,432 psi | 57% | 2051 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 80% | 39,740 psi | 66% | 2093 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 44,280 psi | 74% | 2159 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,926 psi | 60% | 2067 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 38,479 psi | 64% | 2034 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 33,344 psi | 55% | 1991 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 39,363 psi | 65% | 2100 fps | 95.1% |
| Lovex S070 | <<locked>> | 98% | 44,454 psi | 74% | 2201 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 37,072 psi | 62% | 2047 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 36,927 psi | 61% | 2057 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 33,069 psi | 55% | 2018 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 34,911 psi | 58% | 2093 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 32,416 psi | 54% | 2021 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 41,408 psi | 69% | 2211 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 39,450 psi | 66% | 2090 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,580 psi | 64% | 2110 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,902 psi | 71% | 2129 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 43% | 1237 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,498 psi | 74% | 2162 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 44,367 psi | 74% | 2182 fps | 95.6% |
| ReloadSwiss RS 52 | 48 gr | 80% | 34,563 psi | 57% | 2096 fps | 96.2% |
| ReloadSwiss RS 60 | 48.8 gr | 80% | 28,819 psi | 48% | 1991 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,260 psi | 60% | 2146 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 39,929 psi | 66% | 2201 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 40,857 psi | 68% | 2087 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,186 psi | 58% | 2008 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 28,631 psi | 48% | 1932 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 98% | 49,400 psi | 82% | 2241 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,363 psi | 65% | 2100 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,926 psi | 60% | 2067 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 33,344 psi | 55% | 1991 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 44,454 psi | 74% | 2201 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,963 psi | 78% | 2172 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,748 psi | 83% | 2238 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,792 psi | 53% | 2011 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,398 psi | 79% | 2159 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,463 psi | 62% | 2064 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,201 psi | 60% | 2057 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,798 psi | 64% | 2018 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,821 psi | 53% | 1913 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,065 psi | 78% | 2182 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 42,322 psi | 70% | 2156 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 38,189 psi | 63% | 2021 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,028 psi | 62% | 2067 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 29,820 psi | 50% | 1942 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 27,543 psi | 46% | 1965 fps | 95.8% |
| Unknown powder | <<locked>> | 92% | 38,305 psi | 64% | 2142 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 44,034 psi | 73% | 2073 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,899 psi | 65% | 2018 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,200 psi | 57% | 2001 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,998 psi | 58% | 2008 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,181 psi | 47% | 1893 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 92% | 36,724 psi | 61% | 2096 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 39,566 psi | 66% | 2087 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 33,547 psi | 56% | 1998 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 35,621 psi | 59% | 2096 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,806 psi | 51% | 1952 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,321 psi | 69% | 2169 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 46,586 psi | 77% | 2287 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,034 psi | 73% | 2205 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 114 powders for 9.3 x 66 Sako loaded with the .366 | 300gr | Rhino Solid Shank. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,428 fps; across all powders the maximum-charge window runs from 1,352 fps to 2,428 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.366" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 9.3 x 66 Sako with the .366 | 300gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, 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.