Load Specifications
Bullet Manufacturer:A-Square
Bullet Weight:286 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
Load data in caliber 9.3 x 66 Sako with .366 | 286gr | A-Square MONO RN bullet and 102 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 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 84% | 51,242 psi | 85% | 2313 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,779 psi | 88% | 2375 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,330 psi | 87% | 2372 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,259 psi | 90% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,170 psi | 87% | 2365 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 52,156 psi | 87% | 2411 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,010 psi | 85% | 2474 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 53,214 psi | 88% | 2438 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 54,172 psi | 90% | 2438 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 52,591 psi | 87% | 2398 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 52,852 psi | 88% | 2375 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,259 psi | 90% | 2487 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,373 psi | 87% | 2536 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,911 psi | 90% | 2457 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,244 psi | 90% | 2352 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,462 psi | 90% | 2474 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,951 psi | 83% | 2480 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,128 psi | 90% | 2562 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,476 psi | 59% | 2254 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,972 psi | 65% | 2375 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,997 psi | 88% | 2454 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 54,288 psi | 90% | 2470 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 51,387 psi | 85% | 2395 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 51,416 psi | 85% | 2343 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,474 psi | 86% | 2425 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,243 psi | 88% | 2510 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 53,098 psi | 88% | 2388 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,143 psi | 90% | 2415 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,040 psi | 86% | 2438 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,346 psi | 90% | 2523 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 96% | 52,141 psi | 87% | 2441 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 53,766 psi | 89% | 2448 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,992 psi | 76% | 2375 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 52,649 psi | 87% | 2477 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 51,779 psi | 86% | 2507 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,230 psi | 59% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,909 psi | 86% | 2408 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 53,621 psi | 89% | 2434 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,751 psi | 89% | 2421 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,172 psi | 90% | 2405 fps | 97.6% |
| IMR 4198 | <<locked>> | 82% | 54,418 psi | 90% | 2313 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,343 psi | 85% | 2418 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,519 psi | 89% | 2425 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,544 psi | 81% | 2425 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 52,576 psi | 87% | 2457 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 52,591 psi | 87% | 2398 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 52,446 psi | 87% | 2382 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 52,765 psi | 88% | 2421 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,301 psi | 89% | 2375 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 53,505 psi | 89% | 2421 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 52,286 psi | 87% | 2415 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2448 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 52,301 psi | 87% | 2392 fps | 100% |
| Norma 202 | <<locked>> | 88% | 52,663 psi | 87% | 2395 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,621 psi | 89% | 2464 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,531 psi | 84% | 2467 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 54,041 psi | 90% | 2487 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,472 psi | 82% | 2461 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 52,692 psi | 88% | 2411 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,185 psi | 87% | 2431 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,621 psi | 89% | 2402 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,563 psi | 59% | 1486 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,170 psi | 87% | 2382 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,417 psi | 87% | 2418 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,213 psi | 85% | 2487 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,041 psi | 90% | 2562 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,415 psi | 84% | 2493 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,082 psi | 85% | 2516 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 53,388 psi | 89% | 2375 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 52,547 psi | 87% | 2388 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,882 psi | 90% | 2461 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 51,387 psi | 85% | 2395 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 52,286 psi | 87% | 2415 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,765 psi | 88% | 2421 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,505 psi | 89% | 2421 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2448 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,373 psi | 87% | 2474 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 50,923 psi | 85% | 2392 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,735 psi | 86% | 2415 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,983 psi | 90% | 2339 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,664 psi | 89% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,736 psi | 88% | 2375 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 53,693 psi | 89% | 2431 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,359 psi | 89% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,114 psi | 90% | 2434 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 54,418 psi | 90% | 2457 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,179 psi | 75% | 2428 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,012 psi | 90% | 2310 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,085 psi | 90% | 2326 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,025 psi | 86% | 2359 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,924 psi | 88% | 2375 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 52,460 psi | 87% | 2398 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,127 psi | 88% | 2464 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 52,910 psi | 88% | 2395 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 51,155 psi | 85% | 2375 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,141 psi | 87% | 2470 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,898 psi | 63% | 2316 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,737 psi | 89% | 2451 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 52,431 psi | 87% | 2438 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 51,126 psi | 85% | 2477 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,517 psi | 52% | 2231 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 51,401 psi | 85% | 2425 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% | 45,281 psi | 75% | 2234 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,429 psi | 82% | 2333 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,913 psi | 63% | 2172 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,440 psi | 74% | 2297 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,907 psi | 81% | 2320 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 35,824 psi | 60% | 2165 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 33,765 psi | 56% | 2188 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 41,669 psi | 69% | 2260 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,476 psi | 59% | 2133 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,743 psi | 73% | 2270 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 43,381 psi | 72% | 2257 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,981 psi | 85% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | 57.4 gr | 80% | 37,594 psi | 62% | 2280 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,838 psi | 58% | 2152 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,024 psi | 85% | 2313 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,507 psi | 62% | 2205 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,706 psi | 54% | 2152 fps | 95% |
| Alliant Reloder-17 | 56.5 gr | 80% | 29,994 psi | 50% | 2116 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,617 psi | 49% | 2113 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,332 psi | 60% | 2320 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,611 psi | 67% | 2264 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 34,127 psi | 57% | 2152 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 45,571 psi | 76% | 2306 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,513 psi | 76% | 2257 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,090 psi | 70% | 2287 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,180 psi | 77% | 2405 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 49,879 psi | 83% | 2349 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,473 psi | 84% | 2369 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,143 psi | 58% | 2152 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 41,989 psi | 70% | 2329 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 94% | 49,081 psi | 82% | 2398 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,047 psi | 70% | 2270 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,036 psi | 47% | 2021 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,840 psi | 63% | 2244 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 45,005 psi | 75% | 2395 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 43% | 1293 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,350 psi | 67% | 2228 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 41,249 psi | 69% | 2264 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,231 psi | 62% | 2159 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,962 psi | 75% | 2267 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 51,372 psi | 85% | 2277 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 45,353 psi | 75% | 2326 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,643 psi | 74% | 2293 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 32,996 psi | 55% | 2156 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 38,406 psi | 64% | 2231 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 43,743 psi | 73% | 2270 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 49,124 psi | 82% | 2339 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,379 psi | 67% | 2244 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,018 psi | 70% | 2208 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 37,043 psi | 62% | 2165 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 38,870 psi | 65% | 2201 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 41,524 psi | 69% | 2267 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,843 psi | 68% | 2221 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 41,002 psi | 68% | 2228 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,898 psi | 61% | 2195 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 34,490 psi | 57% | 2192 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 36,216 psi | 60% | 2205 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 41,031 psi | 68% | 2320 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 43,482 psi | 72% | 2270 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,656 psi | 71% | 2287 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,108 psi | 78% | 2310 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 44% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,892 psi | 81% | 2336 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,596 psi | 67% | 2231 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,827 psi | 65% | 2287 fps | 97.9% |
| ReloadSwiss RS 60 | 56.5 gr | 80% | 31,908 psi | 53% | 2175 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,794 psi | 56% | 2205 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,593 psi | 61% | 2257 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,817 psi | 74% | 2257 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,812 psi | 64% | 2178 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 32,256 psi | 54% | 2106 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 45,571 psi | 76% | 2306 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,870 psi | 65% | 2201 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,379 psi | 67% | 2244 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,043 psi | 62% | 2165 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 41,524 psi | 69% | 2267 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,156 psi | 55% | 2146 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,626 psi | 69% | 2247 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,059 psi | 67% | 2234 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,293 psi | 70% | 2178 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,969 psi | 58% | 2070 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,410 psi | 72% | 2244 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 47,007 psi | 78% | 2339 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,930 psi | 70% | 2185 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,408 psi | 69% | 2247 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 33,243 psi | 55% | 2113 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 25,570 psi | 42% | 2008 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 47,819 psi | 79% | 2231 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,525 psi | 71% | 2175 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,058 psi | 63% | 2165 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,812 psi | 64% | 2175 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,560 psi | 52% | 2060 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 33,939 psi | 56% | 2149 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 43,540 psi | 72% | 2264 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,202 psi | 62% | 2165 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,331 psi | 59% | 2195 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 31,328 psi | 52% | 2175 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,166 psi | 47% | 1991 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 42,975 psi | 71% | 2303 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 41,989 psi | 70% | 2329 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,588 psi | 49% | 2175 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,378 psi | 65% | 2238 fps | 98.9% |
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 115 powders for 9.3 x 66 Sako loaded with the .366 | 286gr | A-Square MONO RN. Alliant Reloder-17 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,562 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. Accurate 3100, Accurate 4350, ADI AR 2209 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, Alliant Reloder-17 rank at the top here: for 9.3 x 66 Sako with the .366 | 286gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.