Load Specifications
Bullet:.366 | 250gr | Barnes TSX FB
Bullet Manufacturer:Barnes
Bullet Weight:250 gr
Bullet Diameter:0.366"
Bullet Length:<<locked>>
Caliber:9.3 x 64 Brenneke load data
Case Length (l3):2.519"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:88 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 9.3 x 64 Brenneke with .366 | 250gr | 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 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.
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>> | 90% | 54,375 psi | 85% | 2569 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,723 psi | 86% | 2661 fps | 99.3% |
| Accurate 2230 | <<locked>> | 82% | 55,651 psi | 87% | 2674 fps | 99.5% |
| Accurate 2460 | <<locked>> | 88% | 56,202 psi | 88% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,375 psi | 85% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,796 psi | 87% | 2680 fps | 100% |
| Accurate 2700ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 2618 fps | 96% |
| Accurate 4064ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 2703 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 2566 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 84% | 54,331 psi | 85% | 2510 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,795 psi | 86% | 2533 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,768 psi | 89% | 2700 fps | 99.8% |
| ADI AR 2207 | <<locked>> | 82% | 56,231 psi | 88% | 2533 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,389 psi | 85% | 2648 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 84% | 55,056 psi | 86% | 2635 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 56,333 psi | 88% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 92% | 55,724 psi | 87% | 2635 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 57,435 psi | 90% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 56,478 psi | 89% | 2812 fps | 99.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2713 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,346 psi | 85% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 57,696 psi | 90% | 2736 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,685 psi | 68% | 2575 fps | 97.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2723 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 82% | 57,072 psi | 89% | 2552 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 57,159 psi | 90% | 2562 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 56,884 psi | 89% | 2720 fps | 99.4% |
| Bofors RP3ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 2726 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,230 psi | 87% | 2602 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,781 psi | 86% | 2690 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 56,985 psi | 89% | 2782 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 90% | 56,159 psi | 88% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,143 psi | 85% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,347 psi | 87% | 2694 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,185 psi | 82% | 2700 fps | 96.3% |
| Hodgdon H4198 | <<locked>> | 84% | 56,652 psi | 89% | 2562 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 57,246 psi | 90% | 2713 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,813 psi | 62% | 2470 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,738 psi | 87% | 2740 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,316 psi | 54% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 57,566 psi | 90% | 2697 fps | 99.9% |
| IMR 3031 | <<locked>> | 96% | 54,288 psi | 85% | 2671 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 55,999 psi | 88% | 2661 fps | 99.6% |
| IMR 4166 Enduronᴾ | <<locked>> | 100% | 56,289 psi | 88% | 2635 fps | 96.9% |
| IMR 4198 | <<locked>> | 86% | 55,114 psi | 86% | 2536 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 53,693 psi | 84% | 2631 fps | 96.3% |
| IMR 4895 | <<locked>> | 96% | 55,637 psi | 87% | 2720 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 92% | 56,333 psi | 88% | 2661 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 56,362 psi | 88% | 2648 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 56,362 psi | 88% | 2651 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 55,796 psi | 87% | 2680 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 57,290 psi | 90% | 2635 fps | 99.8% |
| Lovex S062 | <<locked>> | 98% | 56,260 psi | 88% | 2674 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,791 psi | 76% | 2569 fps | 96.9% |
| Norma 200 | <<locked>> | 84% | 57,493 psi | 90% | 2589 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,201 psi | 87% | 2648 fps | 100% |
| Norma 202 | <<locked>> | 94% | 55,854 psi | 88% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,768 psi | 89% | 2723 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 43,395 psi | 68% | 2566 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 98% | 57,464 psi | 90% | 2749 fps | 99.8% |
| Ramshot TAC | <<locked>> | 92% | 56,956 psi | 89% | 2677 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,898 psi | 88% | 2694 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,273 psi | 85% | 2618 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,461 psi | 54% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 56,072 psi | 88% | 2648 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 56,173 psi | 88% | 2674 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,056 psi | 85% | 2749 fps | 99.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,925 psi | 85% | 2782 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,004 psi | 67% | 2585 fps | 96.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 44,643 psi | 70% | 2605 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 92% | 56,014 psi | 88% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,492 psi | 87% | 2641 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 2664 fps | 99.8% |
| Shooters World AR Plus | <<locked>> | 82% | 56,362 psi | 88% | 2648 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,791 psi | 76% | 2569 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,796 psi | 87% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 56,260 psi | 88% | 2674 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 56,260 psi | 88% | 2621 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,216 psi | 87% | 2283 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,230 psi | 87% | 2644 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2730 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,405 psi | 87% | 2592 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,766 psi | 86% | 2651 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,216 psi | 87% | 2677 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,534 psi | 85% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2589 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 57,566 psi | 90% | 2697 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 56,550 psi | 89% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 54,244 psi | 85% | 2648 fps | 99.6% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,795 psi | 84% | 2667 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,537 psi | 60% | 2513 fps | 99% |
| Unknown powderᴾ | <<locked>> | 100% | 48,051 psi | 75% | 2628 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 82% | 56,072 psi | 88% | 2484 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,331 psi | 85% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,462 psi | 85% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 57,580 psi | 90% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 56,449 psi | 88% | 2635 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 2605 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2569 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 92% | 56,855 psi | 89% | 2661 fps | 100% |
| Vihtavuori N540 | <<locked>> | 96% | 54,476 psi | 85% | 2635 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,730 psi | 70% | 2569 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2559 fps | 99.3% |
| Winchester 748 | <<locked>> | 90% | 56,855 psi | 89% | 2717 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,185 psi | 82% | 2700 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,261 psi | 90% | 2717 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% | 39,624 psi | 62% | 2356 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,372 psi | 81% | 2612 fps | 98.9% |
| Accurate 2230 | <<locked>> | 80% | 51,735 psi | 81% | 2618 fps | 99.2% |
| Accurate 2460 | <<locked>> | 80% | 42,815 psi | 67% | 2448 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,676 psi | 50% | 2267 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 36,738 psi | 58% | 2388 fps | 99.3% |
| Accurate 2700 | <<locked>> | 98% | 53,432 psi | 84% | 2569 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 30,037 psi | 47% | 2251 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 37,231 psi | 58% | 2461 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 48,037 psi | 75% | 2428 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,414 psi | 76% | 2448 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,303 psi | 57% | 2359 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 80% | 52,779 psi | 83% | 2493 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 35,259 psi | 55% | 2320 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 48,051 psi | 75% | 2539 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,377 psi | 60% | 2375 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 37,231 psi | 58% | 2382 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,976 psi | 69% | 2546 fps | 98.9% |
| Alliant Power Pro 2000-MR | 60.6 gr | 84% | 37,579 psi | 59% | 2474 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,834 psi | 47% | 2238 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,165 psi | 71% | 2448 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,563 psi | 54% | 2343 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,434 psi | 57% | 2428 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,444 psi | 49% | 2339 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 80% | 53,679 psi | 84% | 2510 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,297 psi | 74% | 2434 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,360 psi | 55% | 2356 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 28,805 psi | 45% | 2228 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,582 psi | 64% | 2375 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,318 psi | 57% | 2388 fps | 98.5% |
| Hodgdon CFE223 | 59 gr | 80% | 39,943 psi | 63% | 2507 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 80% | 40,785 psi | 64% | 2425 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,210 psi | 74% | 2539 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,436 psi | 62% | 2434 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 98% | 48,530 psi | 76% | 2641 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 50,067 psi | 78% | 2474 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,564 psi | 57% | 2372 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,851 psi | 51% | 2323 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 30,777 psi | 48% | 2287 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 40% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,808 psi | 51% | 2274 fps | 96% |
| IMR 3031 | <<locked>> | 80% | 32,358 psi | 51% | 2313 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 34,360 psi | 54% | 2297 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 96% | 49,951 psi | 78% | 2539 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 46,021 psi | 72% | 2418 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 50,343 psi | 79% | 2579 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 33,011 psi | 52% | 2320 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 38,377 psi | 60% | 2375 fps | 98.4% |
| Lovex D073.4 | <<locked>> | 80% | 52,359 psi | 82% | 2598 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 42,699 psi | 67% | 2454 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,432 psi | 54% | 2339 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 37,449 psi | 59% | 2316 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 32,024 psi | 50% | 2257 fps | 96.8% |
| Lovex S065 | <<locked>> | 96% | 43,178 psi | 68% | 2477 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 50,821 psi | 80% | 2507 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,592 psi | 56% | 2323 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 35,679 psi | 56% | 2339 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 31,647 psi | 50% | 2280 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 38,290 psi | 60% | 2467 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 82% | 33,460 psi | 52% | 2339 fps | 95.4% |
| Ramshot TAC | <<locked>> | 82% | 40,886 psi | 64% | 2421 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,202 psi | 58% | 2388 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,742 psi | 65% | 2421 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,556 psi | 40% | 1430 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,250 psi | 68% | 2461 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 46,180 psi | 72% | 2526 fps | 95.5% |
| ReloadSwiss RS 52 | 57.3 gr | 82% | 35,636 psi | 56% | 2428 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,644 psi | 43% | 2241 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 37,608 psi | 59% | 2480 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,568 psi | 65% | 2546 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 39,001 psi | 61% | 2369 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 33,750 psi | 53% | 2277 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 84% | 31,024 psi | 49% | 2274 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 80% | 52,359 psi | 82% | 2598 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 96% | 43,178 psi | 68% | 2477 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,432 psi | 54% | 2339 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 32,024 psi | 50% | 2257 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,818 psi | 72% | 2474 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,446 psi | 82% | 2251 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,312 psi | 76% | 2549 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,692 psi | 51% | 2326 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,992 psi | 72% | 2467 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,580 psi | 60% | 2388 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,969 psi | 55% | 2329 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,449 psi | 59% | 2293 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,560 psi | 48% | 2172 fps | 99.2% |
| Somchem S321 | <<locked>> | 80% | 41,118 psi | 64% | 2451 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 36,854 psi | 58% | 2300 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 35,926 psi | 56% | 2343 fps | 96.4% |
| Somchem S355 | <<locked>> | 82% | 30,327 psi | 48% | 2241 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 28,021 psi | 44% | 2260 fps | 95.2% |
| Unknown powder | <<locked>> | 94% | 39,508 psi | 62% | 2474 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 52,707 psi | 83% | 2444 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,627 psi | 67% | 2365 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,579 psi | 59% | 2297 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,329 psi | 51% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,750 psi | 53% | 2280 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 26,948 psi | 42% | 2139 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 94% | 37,782 psi | 59% | 2418 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 38,203 psi | 60% | 2369 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 32,242 psi | 51% | 2264 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 96% | 39,334 psi | 62% | 2470 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,763 psi | 50% | 2257 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 40,190 psi | 63% | 2467 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 48,530 psi | 76% | 2641 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,685 psi | 67% | 2500 fps | 98.7% |
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 106 powders for 9.3 x 64 Brenneke loaded with the .366 | 250gr | Barnes TSX FB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,812 fps. Accurate 2700 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 54–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.366" calls for a 1:16.0 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 TSX FB 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.