Load Specifications
Bullet:.375 | 300gr | Barnes TSX FB
Bullet Manufacturer:Barnes
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:1:16.0
Load data in caliber 9.5 x 66 SE v. Hofe with .375 | 300gr | Barnes TSX FB bullet and 106 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 Alliant Power Pro 2000-MR.
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>> | 86% | 57,130 psi | 90% | 2461 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,230 psi | 87% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,955 psi | 86% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,609 psi | 90% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,027 psi | 86% | 2500 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,740 psi | 61% | 2359 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 54,911 psi | 86% | 2530 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 2618 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 56,144 psi | 88% | 2566 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,159 psi | 90% | 2566 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,347 psi | 87% | 2523 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,101 psi | 88% | 2487 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,406 psi | 90% | 2618 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,912 psi | 88% | 2684 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,116 psi | 90% | 2585 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,724 psi | 89% | 2461 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,711 psi | 90% | 2608 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2625 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,099 psi | 85% | 2654 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,492 psi | 59% | 2392 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,713 psi | 65% | 2536 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,072 psi | 88% | 2585 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 57,508 psi | 90% | 2598 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,696 psi | 90% | 2579 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,971 psi | 89% | 2500 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,433 psi | 85% | 2549 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,768 psi | 89% | 2644 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,014 psi | 88% | 2507 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,029 psi | 89% | 2536 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,969 psi | 86% | 2569 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 98% | 54,447 psi | 85% | 2621 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 96% | 55,448 psi | 87% | 2585 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 88% | 56,724 psi | 89% | 2575 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,226 psi | 77% | 2510 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,246 psi | 88% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,347 psi | 87% | 2661 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 55% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,636 psi | 86% | 2533 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,753 psi | 89% | 2549 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,695 psi | 89% | 2549 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,782 psi | 89% | 2539 fps | 98.9% |
| IMR 4198 | <<locked>> | 82% | 56,869 psi | 89% | 2421 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2559 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,333 psi | 88% | 2562 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,996 psi | 81% | 2562 fps | 99.9% |
| IMR 4895 | <<locked>> | 90% | 55,463 psi | 87% | 2585 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,347 psi | 87% | 2523 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,245 psi | 87% | 2503 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,811 psi | 87% | 2539 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,753 psi | 87% | 2497 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,362 psi | 88% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,390 psi | 87% | 2552 fps | 99.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2585 fps | 99% |
| Norma 201 | <<locked>> | 88% | 54,694 psi | 86% | 2513 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,434 psi | 87% | 2513 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,855 psi | 89% | 2595 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 55,071 psi | 86% | 2605 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 41,771 psi | 65% | 2497 fps | 96.2% |
| Norma URPᴾ | <<locked>> | 100% | 54,012 psi | 85% | 2605 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 92% | 57,537 psi | 90% | 2621 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,953 psi | 83% | 2608 fps | 99.2% |
| Ramshot TAC | <<locked>> | 86% | 55,622 psi | 87% | 2549 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,027 psi | 86% | 2559 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,202 psi | 88% | 2526 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,781 psi | 56% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,737 psi | 86% | 2500 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,608 psi | 87% | 2556 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,592 psi | 86% | 2621 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,740 psi | 90% | 2700 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2641 fps | 99.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2671 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 86% | 55,535 psi | 87% | 2490 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,100 psi | 86% | 2510 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,363 psi | 90% | 2589 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,696 psi | 90% | 2579 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,390 psi | 87% | 2552 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,811 psi | 87% | 2539 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,362 psi | 88% | 2546 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 2585 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,680 psi | 87% | 2605 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,667 psi | 90% | 2572 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,549 psi | 85% | 2543 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,579 psi | 89% | 2454 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,695 psi | 89% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,869 psi | 88% | 2513 fps | 98.8% |
| Somchem S321 | <<locked>> | 84% | 56,333 psi | 88% | 2549 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,666 psi | 87% | 2451 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,232 psi | 90% | 2562 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 57,725 psi | 90% | 2589 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,501 psi | 76% | 2562 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2454 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 84% | 56,405 psi | 88% | 2415 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,826 psi | 89% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,042 psi | 86% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,970 psi | 88% | 2493 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,782 psi | 87% | 2523 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2602 fps | 100% |
| Vihtavuori N530 | <<locked>> | 86% | 55,840 psi | 88% | 2520 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,435 psi | 90% | 2536 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 2612 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,843 psi | 64% | 2457 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,479 psi | 90% | 2585 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,724 psi | 87% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,665 psi | 86% | 2621 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,344 psi | 52% | 2395 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,389 psi | 85% | 2552 fps | 100% |
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% | 47,268 psi | 74% | 2343 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,692 psi | 81% | 2448 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,552 psi | 62% | 2277 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,862 psi | 73% | 2418 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 42,177 psi | 66% | 2306 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 33,663 psi | 53% | 2260 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,449 psi | 59% | 2277 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 29,182 psi | 46% | 2172 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 43,555 psi | 68% | 2382 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,072 psi | 58% | 2254 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,716 psi | 72% | 2388 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 45,948 psi | 72% | 2365 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,606 psi | 84% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | 65.9 gr | 80% | 39,450 psi | 62% | 2415 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,506 psi | 57% | 2270 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,287 psi | 84% | 2421 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,276 psi | 62% | 2329 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,211 psi | 47% | 2188 fps | 95.5% |
| Alliant Reloder-17 | 64.9 gr | 80% | 31,357 psi | 49% | 2247 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 25,831 psi | 40% | 2103 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 92% | 31,401 psi | 49% | 2306 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,714 psi | 67% | 2392 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 35,940 psi | 56% | 2274 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 42,134 psi | 66% | 2343 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,572 psi | 75% | 2375 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,251 psi | 69% | 2408 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,182 psi | 77% | 2543 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 52,359 psi | 82% | 2464 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,214 psi | 83% | 2490 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,956 psi | 58% | 2280 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 39,001 psi | 61% | 2372 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 42,786 psi | 67% | 2388 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 43,961 psi | 69% | 2392 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,817 psi | 40% | 2051 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,001 psi | 63% | 2372 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 41,452 psi | 65% | 2434 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 41% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,264 psi | 66% | 2349 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 43,598 psi | 68% | 2382 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,928 psi | 61% | 2280 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,394 psi | 65% | 2300 fps | 96.1% |
| IMR 4198 | <<locked>> | 80% | 53,592 psi | 84% | 2382 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 39,798 psi | 62% | 2326 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 38,870 psi | 61% | 2283 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 28,529 psi | 45% | 2136 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 40,219 psi | 63% | 2356 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 45,716 psi | 72% | 2388 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 51,517 psi | 81% | 2457 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,496 psi | 67% | 2362 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,729 psi | 69% | 2326 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 38,638 psi | 61% | 2283 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 33,721 psi | 53% | 2188 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 38,566 psi | 60% | 2306 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 42,612 psi | 67% | 2339 fps | 100% |
| Norma 202 | <<locked>> | 80% | 42,946 psi | 67% | 2343 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,624 psi | 61% | 2316 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 44,962 psi | 70% | 2451 fps | 95% |
| Norma MRP | <<locked>> | 98% | 39,117 psi | 61% | 2444 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 29,994 psi | 47% | 2178 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 38,087 psi | 60% | 2329 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 35,679 psi | 56% | 2310 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,658 psi | 72% | 2402 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,947 psi | 70% | 2415 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,342 psi | 77% | 2431 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 42% | 1388 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,227 psi | 80% | 2454 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,420 psi | 59% | 2264 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,249 psi | 65% | 2421 fps | 99.2% |
| ReloadSwiss RS 60 | 64.9 gr | 80% | 33,417 psi | 52% | 2306 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,227 psi | 49% | 2238 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 33,852 psi | 53% | 2297 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 46,369 psi | 73% | 2365 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,495 psi | 63% | 2297 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 33,707 psi | 53% | 2224 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 42,134 psi | 66% | 2343 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 33,721 psi | 53% | 2188 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,496 psi | 67% | 2362 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,638 psi | 61% | 2283 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 38,566 psi | 60% | 2306 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,867 psi | 55% | 2274 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,656 psi | 68% | 2375 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,047 psi | 66% | 2356 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,063 psi | 69% | 2290 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,521 psi | 57% | 2175 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 37,507 psi | 59% | 2231 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 49,269 psi | 77% | 2457 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,671 psi | 68% | 2293 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,482 psi | 68% | 2372 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 34,780 psi | 55% | 2231 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 25,019 psi | 39% | 2083 fps | 96.7% |
| Somchem S385 | <<locked>> | 96% | 39,378 psi | 62% | 2359 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 49,835 psi | 78% | 2336 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,440 psi | 70% | 2283 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,929 psi | 63% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,596 psi | 64% | 2287 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,967 psi | 52% | 2172 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 31,386 psi | 49% | 2182 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 45,774 psi | 72% | 2385 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,131 psi | 61% | 2280 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 30,647 psi | 48% | 2178 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 27,485 psi | 43% | 2169 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,240 psi | 46% | 2113 fps | 97.1% |
| Winchester 748 | <<locked>> | 80% | 45,382 psi | 71% | 2428 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 39,001 psi | 61% | 2372 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 25,730 psi | 40% | 2165 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,539 psi | 65% | 2362 fps | 99.7% |
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 124 powders for 9.5 x 66 SE v. Hofe loaded with the .375 | 300gr | Barnes TSX FB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,700 fps. Accurate 3100 gives the best case fill at 100 %, and 124 of the 124 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for 9.5 x 66 SE v. Hofe with the .375 | 300gr | Barnes TSX FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.