Load Specifications
Load data in caliber 9.3 x 64 Brenneke with .366 | 250gr | Barnes TTSX BT bullet and 101 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 Hodgdon CFE223.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 92% | 55,274 psi | 87% | 2559 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 56,086 psi | 88% | 2654 fps | 99.2% |
| Accurate 2230 | <<locked>> | 84% | 57,087 psi | 89% | 2667 fps | 99.5% |
| Accurate 2460 | <<locked>> | 90% | 57,508 psi | 90% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 54,969 psi | 86% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 56,971 psi | 89% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 56,971 psi | 89% | 2674 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,346 psi | 85% | 2648 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 40,103 psi | 63% | 2497 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 86% | 56,231 psi | 88% | 2516 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,666 psi | 89% | 2539 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,375 psi | 85% | 2648 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 84% | 57,508 psi | 90% | 2530 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,143 psi | 86% | 2635 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 86% | 56,333 psi | 88% | 2631 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 57,406 psi | 90% | 2654 fps | 100% |
| Alliant AR-Comp | <<locked>> | 94% | 56,623 psi | 89% | 2628 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,114 psi | 86% | 2703 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 57,711 psi | 90% | 2802 fps | 99.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2657 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,492 psi | 87% | 2569 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,926 psi | 86% | 2677 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 41,785 psi | 65% | 2516 fps | 96.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,805 psi | 75% | 2657 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,998 psi | 86% | 2510 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,984 psi | 86% | 2516 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,056 psi | 85% | 2657 fps | 98.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2667 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 92% | 56,405 psi | 88% | 2595 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 55,753 psi | 87% | 2680 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,998 psi | 85% | 2720 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 92% | 57,159 psi | 90% | 2641 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,608 psi | 87% | 2635 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2680 fps | 98.6% |
| Hodgdon H4198 | <<locked>> | 84% | 54,665 psi | 86% | 2516 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,781 psi | 86% | 2657 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 37,724 psi | 59% | 2405 fps | 97% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 56,217 psi | 88% | 2726 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,098 psi | 53% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,969 psi | 86% | 2641 fps | 99.7% |
| IMR 3031 | <<locked>> | 98% | 54,926 psi | 86% | 2657 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 53,708 psi | 84% | 2608 fps | 99.2% |
| IMR 4166 Enduronᴾ | <<locked>> | 100% | 54,041 psi | 85% | 2575 fps | 96% |
| IMR 4198 | <<locked>> | 88% | 56,173 psi | 88% | 2530 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,275 psi | 88% | 2707 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 94% | 57,406 psi | 90% | 2654 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 57,682 psi | 90% | 2644 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 57,493 psi | 90% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 56,391 psi | 88% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 54,969 psi | 86% | 2582 fps | 99.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2664 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2507 fps | 96% |
| Norma 200 | <<locked>> | 84% | 55,100 psi | 86% | 2543 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,217 psi | 88% | 2638 fps | 100% |
| Norma 202 | <<locked>> | 96% | 56,579 psi | 89% | 2644 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2710 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 41,147 psi | 64% | 2500 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 98% | 54,665 psi | 86% | 2690 fps | 99.5% |
| Ramshot TAC | <<locked>> | 92% | 54,534 psi | 85% | 2621 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,985 psi | 89% | 2687 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,434 psi | 87% | 2612 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,243 psi | 54% | 1581 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 57,290 psi | 90% | 2641 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 2661 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,781 psi | 86% | 2740 fps | 99.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 2720 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 57,029 psi | 89% | 2621 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 56,550 psi | 89% | 2635 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2605 fps | 99.5% |
| Shooters World AR Plus | <<locked>> | 84% | 57,682 psi | 90% | 2644 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2507 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 96% | 56,391 psi | 88% | 2667 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 57,217 psi | 90% | 2664 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 57,725 psi | 90% | 2618 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 56,753 psi | 89% | 2283 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,594 psi | 89% | 2641 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,388 psi | 82% | 2667 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 56,811 psi | 89% | 2592 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,956 psi | 88% | 2644 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,275 psi | 88% | 2667 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,753 psi | 87% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2539 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,042 psi | 86% | 2644 fps | 100% |
| Somchem S335 | <<locked>> | 96% | 57,624 psi | 90% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,347 psi | 87% | 2638 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,082 psi | 80% | 2608 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 2451 fps | 98.2% |
| Unknown powderᴾ | <<locked>> | 100% | 45,469 psi | 71% | 2562 fps | 96.5% |
| Vihtavuori N120 | <<locked>> | 84% | 57,377 psi | 90% | 2480 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,448 psi | 87% | 2520 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,506 psi | 87% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,419 psi | 87% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 57,406 psi | 90% | 2625 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2549 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2503 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 92% | 54,418 psi | 85% | 2608 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 55,259 psi | 87% | 2625 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2507 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,179 psi | 71% | 2500 fps | 98.7% |
| Winchester 748 | <<locked>> | 90% | 54,172 psi | 85% | 2664 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,346 psi | 85% | 2657 fps | 99.8% |
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% | 37,913 psi | 59% | 2313 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,153 psi | 77% | 2552 fps | 98.3% |
| Accurate 2230 | <<locked>> | 80% | 49,429 psi | 77% | 2562 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 40,886 psi | 64% | 2398 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 29,849 psi | 47% | 2215 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 34,708 psi | 54% | 2329 fps | 98.8% |
| Accurate 2520 | <<locked>> | 80% | 34,708 psi | 54% | 2329 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 28,326 psi | 44% | 2198 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 37,275 psi | 58% | 2444 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 46,891 psi | 73% | 2395 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,268 psi | 74% | 2411 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 34,722 psi | 54% | 2306 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 50,662 psi | 79% | 2448 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 35,926 psi | 56% | 2313 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 45,948 psi | 72% | 2490 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,767 psi | 58% | 2326 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 80% | 35,186 psi | 55% | 2333 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,409 psi | 66% | 2503 fps | 98.5% |
| Alliant Power Pro 2000-MR | 59.2 gr | 86% | 38,276 psi | 60% | 2464 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,124 psi | 47% | 2231 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,236 psi | 68% | 2405 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,070 psi | 55% | 2336 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,233 psi | 61% | 2464 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,243 psi | 54% | 2388 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 51,576 psi | 81% | 2464 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,295 psi | 71% | 2388 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 38,479 psi | 60% | 2402 fps | 95.7% |
| Bofors RP3 | <<locked>> | 82% | 29,240 psi | 46% | 2224 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,972 psi | 61% | 2326 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,447 psi | 54% | 2333 fps | 97.8% |
| Hodgdon CFE223 | 56.4 gr | 80% | 38,116 psi | 60% | 2448 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 80% | 38,885 psi | 61% | 2375 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,005 psi | 71% | 2487 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 40,074 psi | 63% | 2428 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 48,486 psi | 76% | 2431 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,925 psi | 55% | 2320 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,286 psi | 52% | 2310 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 31,401 psi | 49% | 2283 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,135 psi | 39% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 31,270 psi | 49% | 2218 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 30,676 psi | 48% | 2264 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 34,911 psi | 55% | 2287 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 98% | 50,995 psi | 80% | 2533 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 44,440 psi | 70% | 2375 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 33,591 psi | 53% | 2316 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 36,767 psi | 58% | 2326 fps | 97.7% |
| Lovex D073.4 | <<locked>> | 80% | 49,980 psi | 78% | 2543 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 40,683 psi | 64% | 2398 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 32,619 psi | 51% | 2287 fps | 98.3% |
| Lovex S060 | <<locked>> | 80% | 35,911 psi | 56% | 2264 fps | 96.1% |
| Lovex S062 | <<locked>> | 80% | 30,443 psi | 48% | 2205 fps | 95.8% |
| Lovex S065 | <<locked>> | 98% | 43,714 psi | 69% | 2464 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 48,660 psi | 76% | 2461 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,953 psi | 53% | 2270 fps | 97% |
| Norma 202 | <<locked>> | 80% | 34,026 psi | 53% | 2287 fps | 99.1% |
| Norma 203B | <<locked>> | 84% | 34,403 psi | 54% | 2326 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 38,769 psi | 61% | 2454 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 84% | 34,040 psi | 53% | 2333 fps | 95.2% |
| Ramshot TAC | <<locked>> | 84% | 41,785 psi | 65% | 2415 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,607 psi | 56% | 2336 fps | 96% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,972 psi | 63% | 2369 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,367 psi | 40% | 1411 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,379 psi | 65% | 2408 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 46,920 psi | 74% | 2513 fps | 95.2% |
| ReloadSwiss RS 52 | 56.1 gr | 84% | 36,289 psi | 57% | 2425 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,195 psi | 44% | 2238 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 37,347 psi | 59% | 2320 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 32,329 psi | 51% | 2224 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 31,430 psi | 49% | 2270 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 49,980 psi | 78% | 2543 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 43,714 psi | 69% | 2464 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,619 psi | 51% | 2287 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 30,443 psi | 48% | 2205 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,845 psi | 69% | 2421 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,952 psi | 80% | 2218 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,412 psi | 73% | 2500 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,257 psi | 52% | 2320 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,208 psi | 69% | 2421 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 39,552 psi | 62% | 2388 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,373 psi | 52% | 2277 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,897 psi | 56% | 2247 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,182 psi | 46% | 2123 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 39,059 psi | 61% | 2392 fps | 98.5% |
| Somchem S335 | <<locked>> | 80% | 35,273 psi | 55% | 2251 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 34,055 psi | 53% | 2287 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 32,808 psi | 51% | 2283 fps | 95.8% |
| Somchem S365 | <<locked>> | 94% | 30,110 psi | 47% | 2297 fps | 95.9% |
| Unknown powder | <<locked>> | 96% | 40,190 psi | 63% | 2464 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 50,662 psi | 79% | 2402 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,915 psi | 64% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,969 psi | 56% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,082 psi | 49% | 2228 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,155 psi | 50% | 2231 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 27,282 psi | 43% | 2133 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 38,406 psi | 60% | 2408 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 36,593 psi | 57% | 2320 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 30,676 psi | 48% | 2215 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 98% | 39,682 psi | 62% | 2457 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,372 psi | 51% | 2251 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,029 psi | 60% | 2408 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,480 psi | 63% | 2441 fps | 98% |
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 119 powders for 9.3 x 64 Brenneke loaded with the .366 | 250gr | Barnes TTSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,802 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,802 fps. Accurate 2700 gives the best case fill at 100 %, and 119 of the 119 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.366" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 2700, Accurate 4064, Accurate 4350 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, Hodgdon CFE223 rank at the top here: for 9.3 x 64 Brenneke with the .366 | 250gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Bofors RP7, 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.