Load Specifications
Bullet:.375 | 300gr | Woodleigh FMJ
Bullet Manufacturer:Woodleigh
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 | Woodleigh FMJ bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Accurate 4350.
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% | 55,100 psi | 86% | 2461 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,244 psi | 85% | 2490 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,954 psi | 85% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,450 psi | 90% | 2559 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2443 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 54,288 psi | 85% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,128 psi | 85% | 2631 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 54,302 psi | 85% | 2535 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,259 psi | 87% | 2537 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,447 psi | 84% | 2577 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,623 psi | 89% | 2562 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,491 psi | 85% | 2459 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,682 psi | 90% | 2698 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,025 psi | 82% | 2615 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,593 psi | 87% | 2558 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,927 psi | 88% | 2576 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,072 psi | 88% | 2647 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,492 psi | 89% | 2676 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 2568 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,323 psi | 68% | 2467 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,449 psi | 59% | 2380 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,979 psi | 75% | 2625 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,595 psi | 90% | 2600 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 56,217 psi | 88% | 2572 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 44,904 psi | 70% | 2549 fps | 96.2% |
| Bofors RP7 | <<locked>> | 94% | 56,028 psi | 88% | 2553 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,795 psi | 86% | 2469 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,260 psi | 88% | 2595 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,666 psi | 89% | 2507 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,971 psi | 89% | 2588 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 54,694 psi | 86% | 2614 fps | 99% |
| Hodgdon H4350 | <<locked>> | 96% | 55,390 psi | 87% | 2615 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 84% | 54,868 psi | 86% | 2543 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2573 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,476 psi | 85% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,261 psi | 90% | 2681 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 58% | 1538 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,868 psi | 86% | 2562 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,072 psi | 89% | 2544 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,377 psi | 90% | 2585 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,594 psi | 89% | 2535 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 56,275 psi | 88% | 2612 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,549 psi | 85% | 2569 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2549 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 57,377 psi | 90% | 2602 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,623 psi | 89% | 2531 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,128 psi | 85% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,956 psi | 89% | 2510 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,694 psi | 86% | 2515 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,406 psi | 90% | 2574 fps | 99.7% |
| Lovex S070 | <<locked>> | 96% | 54,882 psi | 86% | 2562 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,739 psi | 59% | 2310 fps | 96.2% |
| Norma 201 | <<locked>> | 86% | 56,478 psi | 89% | 2528 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,101 psi | 89% | 2525 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,172 psi | 86% | 2565 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,330 psi | 84% | 2575 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2583 fps | 97.7% |
| Norma URP | <<locked>> | 98% | 56,753 psi | 89% | 2629 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 55,767 psi | 87% | 2591 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,622 psi | 87% | 2632 fps | 99.5% |
| Ramshot TAC | <<locked>> | 84% | 56,797 psi | 89% | 2558 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,579 psi | 89% | 2570 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,232 psi | 90% | 2533 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1574 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,087 psi | 89% | 2572 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,739 psi | 89% | 2639 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,130 psi | 88% | 2670 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,551 psi | 90% | 2666 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,666 psi | 89% | 2694 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 57,435 psi | 90% | 2504 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,029 psi | 89% | 2526 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,028 psi | 88% | 2564 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2553 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,125 psi | 79% | 2550 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 56,028 psi | 88% | 2553 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,406 psi | 90% | 2574 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,128 psi | 85% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,694 psi | 86% | 2515 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,882 psi | 86% | 2595 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,331 psi | 85% | 2577 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,419 psi | 87% | 2539 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,101 psi | 88% | 2556 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,433 psi | 85% | 2423 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,708 psi | 86% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,609 psi | 90% | 2533 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2585 fps | 97.3% |
| Somchem S335 | <<locked>> | 86% | 57,159 psi | 90% | 2463 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,897 psi | 86% | 2527 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,275 psi | 88% | 2562 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 2630 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2535 fps | 97.8% |
| Unknown powder | <<locked>> | 96% | 57,624 psi | 90% | 2636 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 82% | 56,434 psi | 88% | 2413 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,493 psi | 90% | 2443 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,927 psi | 89% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,782 psi | 89% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,273 psi | 85% | 2502 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,679 psi | 86% | 2563 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 56,260 psi | 88% | 2534 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,347 psi | 88% | 2523 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,969 psi | 86% | 2607 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 2534 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,419 psi | 87% | 2555 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,694 psi | 86% | 2614 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,696 psi | 61% | 2495 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2553 fps | 97.1% |
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% | 51,851 psi | 81% | 2421 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,773 psi | 70% | 2365 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,531 psi | 79% | 2497 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 39,102 psi | 61% | 2270 fps | 95.1% |
| Accurate 3100 | <<locked>> | 92% | 34,069 psi | 53% | 2248 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 42,380 psi | 66% | 2372 fps | 100% |
| Accurate 4350 | 66.8 gr | 80% | 31,299 psi | 49% | 2231 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 47,805 psi | 75% | 2440 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,799 psi | 64% | 2312 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 45,963 psi | 72% | 2476 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,908 psi | 78% | 2474 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,068 psi | 80% | 2417 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,845 psi | 69% | 2487 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 42,902 psi | 67% | 2461 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,741 psi | 64% | 2334 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,468 psi | 68% | 2389 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,575 psi | 49% | 2209 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,157 psi | 55% | 2320 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,136 psi | 71% | 2468 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,947 psi | 41% | 2086 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,012 psi | 55% | 2328 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 31,241 psi | 49% | 2283 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,195 psi | 74% | 2452 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 40,538 psi | 64% | 2340 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 42,119 psi | 66% | 2497 fps | 95.4% |
| Bofors RP7 | <<locked>> | 84% | 41,147 psi | 64% | 2316 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,474 psi | 81% | 2425 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,139 psi | 77% | 2500 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,214 psi | 83% | 2465 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,191 psi | 65% | 2345 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 82% | 39,001 psi | 61% | 2355 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 40,727 psi | 64% | 2375 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 48,327 psi | 76% | 2450 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,109 psi | 46% | 2121 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,003 psi | 66% | 2425 fps | 100% |
| Hodgdon Superformance | 79.7 gr | 86% | 40,292 psi | 63% | 2405 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 42% | 1370 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,076 psi | 68% | 2385 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 44,541 psi | 70% | 2379 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,958 psi | 63% | 2323 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 39,639 psi | 62% | 2260 fps | 95.7% |
| IMR 4350 | <<locked>> | 86% | 38,943 psi | 61% | 2333 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,681 psi | 59% | 2283 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 29,501 psi | 46% | 2138 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 44,570 psi | 70% | 2415 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 49,908 psi | 78% | 2442 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,485 psi | 74% | 2421 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,514 psi | 74% | 2379 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,815 psi | 67% | 2341 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,302 psi | 55% | 2208 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 37,898 psi | 59% | 2280 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 34,766 psi | 54% | 2263 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 46,949 psi | 74% | 2396 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,427 psi | 74% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,844 psi | 67% | 2379 fps | 99.7% |
| Norma 204 | <<locked>> | 92% | 46,746 psi | 73% | 2474 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 38,740 psi | 61% | 2423 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 31,647 psi | 50% | 2198 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 42,627 psi | 67% | 2397 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 35,157 psi | 55% | 2284 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 49,908 psi | 78% | 2461 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,574 psi | 78% | 2475 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,838 psi | 84% | 2490 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1406 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,379 psi | 65% | 2328 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,253 psi | 72% | 2488 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,376 psi | 59% | 2374 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,995 psi | 49% | 2209 fps | 95.5% |
| ReloadSwiss RS 70 | 73 gr | 82% | 33,098 psi | 52% | 2265 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,024 psi | 80% | 2421 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,802 psi | 70% | 2354 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,101 psi | 60% | 2291 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 50,647 psi | 79% | 2503 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 96% | 43,830 psi | 69% | 2450 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 41,147 psi | 64% | 2316 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,302 psi | 55% | 2208 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,485 psi | 74% | 2421 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,815 psi | 67% | 2341 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 35,694 psi | 56% | 2270 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,986 psi | 61% | 2336 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,341 psi | 76% | 2439 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,311 psi | 73% | 2416 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,080 psi | 75% | 2341 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,277 psi | 63% | 2227 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,117 psi | 61% | 2249 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 40,654 psi | 64% | 2431 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,790 psi | 75% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,022 psi | 75% | 2432 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,827 psi | 61% | 2294 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 28,442 psi | 45% | 2160 fps | 98.2% |
| Somchem S385 | <<locked>> | 94% | 41,785 psi | 65% | 2388 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 34,272 psi | 54% | 2246 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 80% | 53,142 psi | 83% | 2374 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,513 psi | 71% | 2291 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,469 psi | 70% | 2356 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,222 psi | 69% | 2331 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,257 psi | 52% | 2163 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 34,258 psi | 54% | 2224 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 80% | 52,692 psi | 83% | 2488 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,903 psi | 69% | 2353 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,838 psi | 55% | 2265 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 27,804 psi | 44% | 2152 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,561 psi | 51% | 2177 fps | 98.3% |
| Winchester 760 | <<locked>> | 82% | 39,001 psi | 61% | 2355 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,802 psi | 40% | 2151 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,977 psi | 72% | 2449 fps | 95.6% |
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 106 powders for 9.5 x 66 SE v. Hofe loaded with the .375 | 300gr | Woodleigh FMJ. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,698 fps; across all powders the maximum-charge window runs from 1,538 fps to 2,698 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, 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. ReloadSwiss RS 70, Hodgdon Superformance, Accurate 4350 rank at the top here: for 9.5 x 66 SE v. Hofe with the .375 | 300gr | Woodleigh FMJ 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.