Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 300gr | NorthFork Bonded Core bullet and 33 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Vihtavuori N555 and ReloadSwiss RS 70.
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>> | 98% | 38,986 psi | 88% | 2375 fps | 96.9% |
| Accurate 4350 | <<locked>> | 88% | 38,928 psi | 88% | 2388 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 38,508 psi | 87% | 2395 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 38,276 psi | 87% | 2418 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,943 psi | 90% | 2454 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,302 psi | 80% | 2362 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,754 psi | 88% | 2497 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 86% | 38,870 psi | 88% | 2382 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 37,855 psi | 86% | 2343 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 81% | 1535 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 39,943 psi | 90% | 2392 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 38,101 psi | 86% | 2290 fps | 96.9% |
| Lovex S070 | <<locked>> | 86% | 38,435 psi | 87% | 2316 fps | 95.8% |
| Norma URP | <<locked>> | 88% | 38,885 psi | 88% | 2382 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 37,985 psi | 86% | 2372 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,158 psi | 82% | 1572 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 38,087 psi | 86% | 2418 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,406 psi | 87% | 2402 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,348 psi | 87% | 2415 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 38,725 psi | 88% | 2333 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,101 psi | 86% | 2290 fps | 96.9% |
| Shooters World SW4350 | <<locked>> | 86% | 38,435 psi | 87% | 2316 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 39,639 psi | 90% | 2379 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,842 psi | 90% | 2287 fps | 96% |
| Somchem S355 | <<locked>> | 82% | 39,378 psi | 89% | 2329 fps | 99.5% |
| Somchem S365 | <<locked>> | 92% | 39,711 psi | 90% | 2438 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 39,972 psi | 90% | 2316 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 38,145 psi | 86% | 2333 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 88% | 39,987 psi | 90% | 2385 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 96% | 38,609 psi | 87% | 2428 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 37,855 psi | 86% | 2313 fps | 99.5% |
| Winchester 760 | <<locked>> | 86% | 38,870 psi | 88% | 2382 fps | 95.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,650 psi | 81% | 2474 fps | 99.9% |
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>> | 94% | 34,171 psi | 77% | 2283 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 29,559 psi | 67% | 2188 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,168 psi | 68% | 2198 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,460 psi | 76% | 2313 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,194 psi | 59% | 2123 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,199 psi | 75% | 2313 fps | 95.1% |
| Alliant Reloder-26 | 77.3 gr | 90% | 31,662 psi | 72% | 2329 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 84% | 36,303 psi | 82% | 2329 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,659 psi | 63% | 2110 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 60% | 1368 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 28,877 psi | 65% | 2152 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 33,707 psi | 76% | 2201 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 36,071 psi | 82% | 2270 fps | 95% |
| Norma URP | <<locked>> | 80% | 30,066 psi | 68% | 2192 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 86% | 35,578 psi | 80% | 2323 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 61% | 1401 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,578 psi | 80% | 2365 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,327 psi | 66% | 2198 fps | 95% |
| ReloadSwiss RS 70 | 71.4 gr | 84% | 33,605 psi | 76% | 2306 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,260 psi | 82% | 2283 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,707 psi | 76% | 2201 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 36,071 psi | 82% | 2270 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,188 psi | 84% | 2329 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,347 psi | 84% | 2241 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 37,057 psi | 84% | 2287 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 26,905 psi | 61% | 2149 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 35,230 psi | 80% | 2228 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 31,386 psi | 71% | 2192 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 30,850 psi | 70% | 2195 fps | 95.6% |
| Vihtavuori N555 | 67.3 gr | 86% | 27,891 psi | 63% | 2188 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,067 psi | 70% | 2169 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 36,463 psi | 82% | 2333 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,078 psi | 59% | 2192 fps | 96% |
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 33 powders for .369 N.E. Purdey loaded with the .375 | 300gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 2,497 fps; across all powders the maximum-charge window runs from 1,535 fps to 2,497 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 33 of the 33 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 80–90 %, 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-23, Alliant Reloder-25, Hodgdon TrailBoss 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, Vihtavuori N555, ReloadSwiss RS 70 rank at the top here: for .369 N.E. Purdey with the .375 | 300gr | NorthFork Bonded Core 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.