Load Specifications
Load data in caliber 9.3 x 74 R with .366 | 250gr | Barnes TTSX BT bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and Norma 203B.
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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 44,469 psi | 90% | 2336 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 42,308 psi | 86% | 2333 fps | 99.4% |
| Accurate 2495 | <<locked>> | 94% | 42,743 psi | 87% | 2372 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 42,888 psi | 87% | 2382 fps | 99.2% |
| Accurate 4064 | <<locked>> | 96% | 42,496 psi | 86% | 2395 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 90% | 43,526 psi | 88% | 2382 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 96% | 44,585 psi | 90% | 2379 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 43,308 psi | 88% | 2352 fps | 98% |
| Alliant AR-Comp | <<locked>> | 90% | 44,338 psi | 90% | 2402 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 43,743 psi | 89% | 2434 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 42,641 psi | 86% | 2392 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 42,192 psi | 86% | 2306 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 43,874 psi | 89% | 2408 fps | 96.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,163 psi | 88% | 2464 fps | 96.9% |
| Bofors RP3 | <<locked>> | 96% | 42,148 psi | 85% | 2398 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 43,323 psi | 88% | 2313 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 90% | 43,830 psi | 89% | 2418 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 86% | 42,380 psi | 86% | 2431 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 84% | 43,584 psi | 88% | 2369 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 84% | 44,353 psi | 90% | 2388 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 90% | 43,801 psi | 89% | 2395 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 41,887 psi | 85% | 2408 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,402 psi | 68% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 42,482 psi | 86% | 2352 fps | 97.1% |
| IMR 3031 | <<locked>> | 90% | 42,032 psi | 85% | 2398 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 43,903 psi | 89% | 2362 fps | 96.3% |
| IMR 4198 | <<locked>> | 82% | 43,526 psi | 88% | 2283 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 42,003 psi | 85% | 2392 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 88% | 43,308 psi | 88% | 2352 fps | 98% |
| Lovex D073.5 | <<locked>> | 84% | 42,264 psi | 86% | 2339 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 92% | 44,019 psi | 89% | 2408 fps | 99.4% |
| Lovex S060 | <<locked>> | 88% | 42,250 psi | 86% | 2290 fps | 96.5% |
| Lovex S062 | <<locked>> | 94% | 43,062 psi | 87% | 2365 fps | 98.1% |
| Norma 201 | <<locked>> | 90% | 42,482 psi | 86% | 2343 fps | 97.9% |
| Norma 202 | <<locked>> | 90% | 42,395 psi | 86% | 2356 fps | 99.5% |
| Norma 203B | <<locked>> | 94% | 42,975 psi | 87% | 2398 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 94% | 43,134 psi | 87% | 2415 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 42,293 psi | 86% | 2369 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 41,756 psi | 85% | 2306 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,533 psi | 68% | 1506 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 43,062 psi | 87% | 2346 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 42,844 psi | 87% | 2454 fps | 96.1% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 43,120 psi | 87% | 2477 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 88% | 43,468 psi | 88% | 2343 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 92% | 42,554 psi | 86% | 2336 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 98% | 41,785 psi | 85% | 2385 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 44,019 psi | 89% | 2408 fps | 99.4% |
| Shooters World Precision | <<locked>> | 94% | 43,062 psi | 87% | 2365 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 42,873 psi | 87% | 2310 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 44,353 psi | 90% | 2441 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 43,033 psi | 87% | 2320 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 41,974 psi | 85% | 2356 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 42,351 psi | 86% | 2274 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 44,164 psi | 90% | 2316 fps | 99.9% |
| Somchem S321 | <<locked>> | 86% | 43,584 psi | 88% | 2382 fps | 98.3% |
| Somchem S335 | <<locked>> | 90% | 44,034 psi | 89% | 2320 fps | 99.9% |
| Somchem S341 | <<locked>> | 90% | 43,497 psi | 88% | 2372 fps | 96.6% |
| Somchem S355 | <<locked>> | 98% | 43,294 psi | 88% | 2392 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 84% | 42,598 psi | 86% | 2267 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 42,177 psi | 86% | 2277 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 43,816 psi | 89% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 42,888 psi | 87% | 2343 fps | 99.7% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,541 psi | 90% | 2385 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 88% | 43,482 psi | 88% | 2352 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 94% | 44,048 psi | 89% | 2379 fps | 99.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,031 psi | 83% | 2323 fps | 96.2% |
| Winchester 748 | <<locked>> | 88% | 41,930 psi | 85% | 2388 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 43,816 psi | 89% | 2405 fps | 97.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 34,476 psi | 70% | 2169 fps | 99.7% |
| Accurate 2460 | <<locked>> | 80% | 37,043 psi | 75% | 2244 fps | 98.5% |
| Accurate 2495 | <<locked>> | 80% | 26,484 psi | 54% | 2060 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 32,489 psi | 66% | 2188 fps | 97% |
| Accurate 4064 | <<locked>> | 80% | 25,121 psi | 51% | 2034 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 86% | 38,464 psi | 78% | 2290 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 94% | 41,829 psi | 85% | 2333 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,562 psi | 68% | 2169 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 31,734 psi | 64% | 2188 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,363 psi | 78% | 2333 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 35,128 psi | 71% | 2254 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,653 psi | 80% | 2267 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 41,089 psi | 83% | 2362 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 37,782 psi | 77% | 2359 fps | 95.1% |
| Bofors RP3 | <<locked>> | 90% | 34,243 psi | 69% | 2251 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,969 psi | 73% | 2178 fps | 96.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 30,922 psi | 63% | 2169 fps | 95.1% |
| Hodgdon CFE223 | <<locked>> | 84% | 39,537 psi | 80% | 2375 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 38,247 psi | 78% | 2277 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 80% | 38,508 psi | 78% | 2290 fps | 99% |
| Hodgdon H4895 | <<locked>> | 84% | 36,216 psi | 73% | 2254 fps | 95.4% |
| Hodgdon LEVERevolution | 52.9 gr | 86% | 34,403 psi | 70% | 2260 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,787 psi | 50% | 1316 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 37,478 psi | 76% | 2264 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 30,211 psi | 61% | 2169 fps | 98.6% |
| IMR 4064 | <<locked>> | 92% | 41,350 psi | 84% | 2320 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 41,104 psi | 83% | 2247 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 36,811 psi | 75% | 2293 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 33,562 psi | 68% | 2169 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 80% | 36,840 psi | 75% | 2241 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 80% | 29,153 psi | 59% | 2126 fps | 95.8% |
| Lovex S060 | <<locked>> | 84% | 37,376 psi | 76% | 2201 fps | 95% |
| Lovex S062 | <<locked>> | 86% | 33,446 psi | 68% | 2185 fps | 95.4% |
| Norma 201 | <<locked>> | 82% | 32,808 psi | 67% | 2156 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 30,835 psi | 63% | 2136 fps | 97.1% |
| Norma 203B | 53 gr | 90% | 37,681 psi | 76% | 2303 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 92% | 40,248 psi | 82% | 2362 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 39,436 psi | 80% | 2320 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,233 psi | 80% | 2260 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,801 psi | 50% | 1345 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,753 psi | 77% | 2254 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 39,885 psi | 81% | 2398 fps | 95.1% |
| ReloadSwiss RS 60 | 54.4 gr | 88% | 31,227 psi | 63% | 2218 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 34,243 psi | 69% | 2172 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 84% | 33,257 psi | 67% | 2159 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 94% | 36,651 psi | 74% | 2290 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,153 psi | 59% | 2126 fps | 95.8% |
| Shooters World Precision | <<locked>> | 86% | 33,446 psi | 68% | 2185 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,074 psi | 81% | 2264 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,059 psi | 79% | 2346 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,422 psi | 82% | 2277 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 39,363 psi | 80% | 2306 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,040 psi | 67% | 2106 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,658 psi | 54% | 1982 fps | 96.6% |
| Somchem S321 | <<locked>> | 80% | 35,476 psi | 72% | 2231 fps | 96.3% |
| Somchem S335 | <<locked>> | 80% | 32,227 psi | 65% | 2106 fps | 98.2% |
| Somchem S341 | <<locked>> | 86% | 38,000 psi | 77% | 2274 fps | 95% |
| Somchem S355 | <<locked>> | 92% | 35,694 psi | 72% | 2254 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 37,710 psi | 76% | 2188 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,982 psi | 67% | 2116 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 27,760 psi | 56% | 2077 fps | 98.7% |
| Vihtavuori N140 | <<locked>> | 80% | 29,037 psi | 59% | 2077 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 90% | 31,923 psi | 65% | 2156 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 33,214 psi | 67% | 2162 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 27,717 psi | 56% | 2060 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,363 psi | 78% | 2274 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 31,894 psi | 65% | 2188 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 35,868 psi | 73% | 2260 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 68 powders for 9.3 x 74 R loaded with the .366 | 250gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,473 fps to 2,477 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 68–90 %, 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. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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 60, Hodgdon LEVERevolution, Norma 203B rank at the top here: for 9.3 x 74 R with the .366 | 250gr | Barnes TTSX BT 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.