Load Specifications
Bullet Manufacturer:Hornady
Bullet Weight:300 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:9.5 x 66 SE v. Hofe load data
Case Length (l3):2.598"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:106 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber 9.5 x 66 SE v. Hofe with .375 | 300gr | Hornady InterBond RN bullet and 109 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 54,331 psi | 85% | 2444 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,782 psi | 89% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,679 psi | 86% | 2533 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,419 psi | 87% | 2530 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,671 psi | 68% | 2457 fps | 98.2% |
| Accurate 4064 | <<locked>> | 90% | 56,768 psi | 89% | 2562 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,753 psi | 89% | 2657 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 56,956 psi | 89% | 2595 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,505 psi | 85% | 2552 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2592 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,738 psi | 87% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,145 psi | 90% | 2513 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,681 psi | 89% | 2713 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,082 psi | 80% | 2592 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,549 psi | 85% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,114 psi | 86% | 2592 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,361 psi | 87% | 2690 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,328 psi | 79% | 2585 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,495 psi | 65% | 2484 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 2398 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2641 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,652 psi | 89% | 2615 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 55,361 psi | 87% | 2589 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,129 psi | 86% | 2569 fps | 98.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,435 psi | 90% | 2526 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,216 psi | 87% | 2575 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,551 psi | 90% | 2674 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,188 psi | 88% | 2605 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 55,709 psi | 87% | 2657 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 94% | 56,376 psi | 88% | 2621 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 86% | 57,537 psi | 90% | 2602 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,085 psi | 85% | 2589 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,087 psi | 89% | 2638 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,333 psi | 88% | 2700 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 56% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,085 psi | 86% | 2559 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,273 psi | 85% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,450 psi | 90% | 2579 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,174 psi | 90% | 2569 fps | 99.2% |
| IMR 4350 | <<locked>> | 98% | 55,448 psi | 87% | 2592 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,942 psi | 89% | 2595 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,087 psi | 89% | 2648 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,550 psi | 89% | 2618 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,738 psi | 87% | 2546 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,898 psi | 89% | 2569 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,115 psi | 88% | 2523 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,188 psi | 90% | 2572 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,536 psi | 89% | 2589 fps | 99.8% |
| Lovex S070 | <<locked>> | 98% | 57,363 psi | 90% | 2621 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,260 psi | 57% | 2323 fps | 96.4% |
| Norma 201 | <<locked>> | 86% | 55,579 psi | 87% | 2543 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,173 psi | 88% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,360 psi | 85% | 2579 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,985 psi | 88% | 2641 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 46,238 psi | 72% | 2598 fps | 97.8% |
| Norma URP | <<locked>> | 98% | 55,506 psi | 87% | 2644 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 54,824 psi | 86% | 2605 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,215 psi | 85% | 2644 fps | 99.5% |
| Ramshot TAC | <<locked>> | 84% | 55,869 psi | 88% | 2572 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,622 psi | 87% | 2585 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,463 psi | 88% | 2549 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,217 psi | 88% | 2589 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,854 psi | 88% | 2654 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,143 psi | 86% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,463 psi | 88% | 2684 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,738 psi | 87% | 2710 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 56,681 psi | 89% | 2520 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,144 psi | 88% | 2539 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,230 psi | 87% | 2582 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2566 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 48,907 psi | 77% | 2566 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 94% | 55,129 psi | 86% | 2569 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,536 psi | 89% | 2589 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,898 psi | 89% | 2569 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,188 psi | 90% | 2572 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,363 psi | 90% | 2621 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,913 psi | 89% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,404 psi | 85% | 2552 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,332 psi | 87% | 2572 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,985 psi | 89% | 2477 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,319 psi | 90% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,565 psi | 89% | 2546 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2559 fps | 96.9% |
| Somchem S321 | <<locked>> | 82% | 57,058 psi | 89% | 2575 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,362 psi | 88% | 2477 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,172 psi | 85% | 2543 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,303 psi | 87% | 2575 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 54,868 psi | 86% | 2562 fps | 95.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 2644 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2549 fps | 98% |
| Vihtavuori N130 | <<locked>> | 82% | 56,695 psi | 89% | 2434 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,290 psi | 90% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,173 psi | 88% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,695 psi | 89% | 2520 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,797 psi | 89% | 2552 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,607 psi | 86% | 2592 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 42,960 psi | 67% | 2425 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 84% | 56,347 psi | 88% | 2546 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,824 psi | 86% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,145 psi | 90% | 2648 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,934 psi | 72% | 2552 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,491 psi | 85% | 2569 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,347 psi | 88% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,912 psi | 88% | 2661 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,057 psi | 58% | 2510 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,216 psi | 87% | 2579 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 46,615 psi | 73% | 2487 fps | 96.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,227 psi | 80% | 2405 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,976 psi | 69% | 2349 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,155 psi | 80% | 2490 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,844 psi | 67% | 2339 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 33,272 psi | 52% | 2264 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,626 psi | 65% | 2352 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,661 psi | 48% | 2215 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 47,137 psi | 74% | 2457 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 40,161 psi | 63% | 2326 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 96% | 45,107 psi | 71% | 2490 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,211 psi | 77% | 2457 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,154 psi | 79% | 2431 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,076 psi | 68% | 2503 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 42,148 psi | 66% | 2441 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,059 psi | 63% | 2349 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,815 psi | 67% | 2405 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,067 psi | 49% | 2228 fps | 96.4% |
| Alliant Reloder-17 | 68.9 gr | 80% | 34,490 psi | 54% | 2336 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 96% | 44,411 psi | 70% | 2487 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,411 psi | 40% | 2103 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,418 psi | 54% | 2346 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 88% | 30,661 psi | 48% | 2303 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,427 psi | 73% | 2467 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 39,697 psi | 62% | 2356 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 38,029 psi | 60% | 2283 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,792 psi | 80% | 2438 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,341 psi | 76% | 2484 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,693 psi | 84% | 2621 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,553 psi | 64% | 2362 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 37,565 psi | 59% | 2356 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 84% | 41,104 psi | 64% | 2375 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,630 psi | 75% | 2467 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,558 psi | 45% | 2136 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,845 psi | 69% | 2451 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 39,494 psi | 62% | 2418 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 42% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,658 psi | 72% | 2425 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 47,659 psi | 75% | 2451 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,206 psi | 66% | 2356 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,628 psi | 70% | 2379 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 38,276 psi | 60% | 2313 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,130 psi | 58% | 2264 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 29,878 psi | 47% | 2178 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 43,888 psi | 69% | 2434 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 49,211 psi | 77% | 2457 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,601 psi | 73% | 2434 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,847 psi | 73% | 2395 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 42,134 psi | 66% | 2356 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 34,722 psi | 54% | 2224 fps | 96.1% |
| Lovex S070 | <<locked>> | 84% | 37,318 psi | 58% | 2297 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 33,968 psi | 53% | 2277 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 46,238 psi | 72% | 2411 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,717 psi | 73% | 2415 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,192 psi | 66% | 2395 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 43,062 psi | 67% | 2438 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 37,913 psi | 59% | 2438 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 31,067 psi | 49% | 2215 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 41,843 psi | 66% | 2411 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 34,548 psi | 54% | 2300 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 49,139 psi | 77% | 2477 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,791 psi | 76% | 2490 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,069 psi | 83% | 2503 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 43% | 1414 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,843 psi | 64% | 2346 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,527 psi | 71% | 2507 fps | 99.8% |
| ReloadSwiss RS 60 | 68.9 gr | 80% | 36,709 psi | 58% | 2392 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,472 psi | 48% | 2231 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 32,547 psi | 51% | 2283 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 50,227 psi | 79% | 2434 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,135 psi | 69% | 2369 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,434 psi | 59% | 2306 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 98% | 49,879 psi | 78% | 2520 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 96% | 43,062 psi | 67% | 2467 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 38,029 psi | 60% | 2283 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,722 psi | 54% | 2224 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,601 psi | 73% | 2434 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,134 psi | 66% | 2356 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 37,318 psi | 58% | 2297 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,392 psi | 60% | 2356 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,558 psi | 75% | 2454 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,672 psi | 72% | 2434 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,543 psi | 75% | 2356 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,740 psi | 62% | 2241 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,114 psi | 57% | 2218 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 42,670 psi | 67% | 2464 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 53,345 psi | 84% | 2530 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,108 psi | 74% | 2356 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,253 psi | 74% | 2448 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 38,174 psi | 60% | 2310 fps | 99.5% |
| Somchem S361 | <<locked>> | 98% | 51,416 psi | 81% | 2513 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 27,934 psi | 44% | 2178 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 38,363 psi | 60% | 2356 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 53,519 psi | 84% | 2398 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,950 psi | 75% | 2346 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,874 psi | 69% | 2343 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,135 psi | 69% | 2352 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,318 psi | 57% | 2251 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 32,358 psi | 51% | 2215 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 40,234 psi | 63% | 2375 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 49,371 psi | 77% | 2454 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,612 psi | 67% | 2352 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,952 psi | 50% | 2221 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 27,267 psi | 43% | 2172 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,039 psi | 50% | 2195 fps | 98.5% |
| Winchester 748 | <<locked>> | 80% | 49,385 psi | 77% | 2497 fps | 100% |
| Winchester 760 | 70.9 gr | 84% | 37,724 psi | 59% | 2362 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,396 psi | 40% | 2172 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,223 psi | 71% | 2438 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 43,714 psi | 69% | 2438 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 109 powders for 9.5 x 66 SE v. Hofe loaded with the .375 | 300gr | Hornady InterBond RN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,713 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,713 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for 9.5 x 66 SE v. Hofe with the .375 | 300gr | Hornady InterBond RN 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.