Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 300gr | Woodleigh RN SN bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Vihtavuori N555.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 39,349 psi | 89% | 2402 fps | 97.4% |
| Accurate 4350 | <<locked>> | 86% | 38,972 psi | 88% | 2405 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 38,421 psi | 87% | 2418 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 82% | 38,029 psi | 86% | 2431 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 37,753 psi | 85% | 2434 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,507 psi | 85% | 2441 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,841 psi | 88% | 2520 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 84% | 38,609 psi | 87% | 2398 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 37,768 psi | 85% | 2359 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 81% | 1562 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 40,030 psi | 90% | 2411 fps | 99% |
| Lovex S065 | <<locked>> | 82% | 37,840 psi | 86% | 2310 fps | 97.2% |
| Lovex S070 | <<locked>> | 84% | 38,247 psi | 86% | 2336 fps | 96.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,463 psi | 85% | 2365 fps | 96.9% |
| Norma MRP | <<locked>> | 94% | 39,059 psi | 88% | 2484 fps | 96.1% |
| Norma URP | <<locked>> | 86% | 38,928 psi | 88% | 2402 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 37,739 psi | 85% | 2388 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 82% | 1598 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 38,479 psi | 87% | 2421 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,116 psi | 86% | 2434 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,840 psi | 86% | 2310 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 84% | 38,247 psi | 86% | 2336 fps | 96.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,465 psi | 89% | 2303 fps | 96.3% |
| Somchem S365 | <<locked>> | 90% | 39,697 psi | 90% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 39,726 psi | 90% | 2329 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 38,029 psi | 86% | 2352 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 86% | 39,798 psi | 90% | 2402 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 94% | 39,030 psi | 88% | 2454 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 37,492 psi | 85% | 2329 fps | 99.7% |
| Winchester 760 | <<locked>> | 84% | 38,754 psi | 88% | 2402 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,319 psi | 87% | 2562 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 32,097 psi | 73% | 2254 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 31,691 psi | 72% | 2254 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,807 psi | 72% | 2264 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,491 psi | 80% | 2379 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,613 psi | 56% | 2093 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,301 psi | 75% | 2343 fps | 95.8% |
| Alliant Reloder-26 | 78.1 gr | 86% | 29,530 psi | 67% | 2293 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 82% | 36,187 psi | 82% | 2349 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,327 psi | 66% | 2175 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 61% | 1394 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 30,850 psi | 70% | 2218 fps | 96.6% |
| Lovex S065 | <<locked>> | 80% | 35,520 psi | 80% | 2260 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 35,897 psi | 81% | 2287 fps | 95.5% |
| Lovex S071 | <<locked>> | 96% | 32,996 psi | 75% | 2274 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 36,521 psi | 83% | 2428 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,010 psi | 72% | 2254 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 82% | 33,141 psi | 75% | 2287 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 61% | 1427 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,343 psi | 71% | 2267 fps | 96.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 31,227 psi | 71% | 2267 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,520 psi | 80% | 2260 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 35,897 psi | 81% | 2287 fps | 95.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,999 psi | 84% | 2254 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 28,645 psi | 65% | 2215 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 80% | 37,318 psi | 84% | 2287 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,286 psi | 75% | 2254 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 32,837 psi | 74% | 2257 fps | 96.8% |
| Vihtavuori N555 | 67.9 gr | 82% | 26,324 psi | 60% | 2159 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,808 psi | 74% | 2231 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 36,332 psi | 82% | 2349 fps | 95.4% |
| Winchester StaBALL HD | 75 gr | 86% | 24,468 psi | 55% | 2159 fps | 95.4% |
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 31 powders for .369 N.E. Purdey loaded with the .375 | 300gr | Woodleigh RN SN. Winchester StaBALL HD delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,562 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 81–90 %, 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. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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-26, Winchester StaBALL HD, Vihtavuori N555 rank at the top here: for .369 N.E. Purdey with the .375 | 300gr | Woodleigh RN SN 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.