Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 270gr | NorthFork Bonded Core bullet and 30 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Somchem S365.
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 3100ᴾ | <<locked>> | 100% | 39,566 psi | 89% | 2523 fps | 96.1% |
| Accurate 4350 | <<locked>> | 90% | 39,334 psi | 89% | 2536 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 40,016 psi | 90% | 2461 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 39,479 psi | 89% | 2480 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,349 psi | 89% | 2549 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 86% | 39,015 psi | 88% | 2569 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,174 psi | 86% | 2556 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,566 psi | 89% | 2648 fps | 97.5% |
| Bofors RP3 | <<locked>> | 82% | 39,247 psi | 89% | 2487 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 38,508 psi | 87% | 2490 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 80% | 1634 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 38,043 psi | 86% | 2493 fps | 97.5% |
| Lovex S065 | <<locked>> | 86% | 38,783 psi | 88% | 2438 fps | 96.1% |
| Norma URP | <<locked>> | 90% | 39,494 psi | 89% | 2536 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,955 psi | 81% | 1673 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 38,972 psi | 88% | 2579 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,059 psi | 88% | 2552 fps | 97.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,233 psi | 89% | 2566 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 39,407 psi | 89% | 2484 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,783 psi | 88% | 2438 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 37,898 psi | 86% | 2484 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 39,407 psi | 89% | 2375 fps | 100% |
| Somchem S355 | <<locked>> | 82% | 37,797 psi | 85% | 2441 fps | 98.8% |
| Somchem S365 | <<locked>> | 92% | 37,739 psi | 85% | 2543 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 38,334 psi | 87% | 2425 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 88% | 38,870 psi | 88% | 2484 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 88% | 38,203 psi | 86% | 2487 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 98% | 38,827 psi | 88% | 2575 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 38,827 psi | 88% | 2467 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,084 psi | 77% | 2556 fps | 98.8% |
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>> | 98% | 36,898 psi | 83% | 2470 fps | 95.2% |
| Accurate 4350 | <<locked>> | 84% | 32,024 psi | 72% | 2375 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 37,507 psi | 85% | 2408 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,086 psi | 84% | 2431 fps | 99% |
| Alliant Reloder-16 | 68.3 gr | 84% | 32,706 psi | 74% | 2392 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,024 psi | 72% | 2405 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,181 psi | 64% | 2300 fps | 95.3% |
| Alliant Reloder-26 | 84.4 gr | 94% | 34,490 psi | 78% | 2523 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 36,695 psi | 83% | 2434 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,108 psi | 64% | 2244 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,397 psi | 60% | 1460 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 31,256 psi | 71% | 2339 fps | 95.2% |
| Lovex S065 | <<locked>> | 84% | 36,550 psi | 83% | 2392 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 32,648 psi | 74% | 2382 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 60% | 1493 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,098 psi | 77% | 2467 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,084 psi | 77% | 2444 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,825 psi | 83% | 2510 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 34,606 psi | 78% | 2385 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,550 psi | 83% | 2392 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,491 psi | 80% | 2431 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,173 psi | 84% | 2336 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,375 psi | 80% | 2388 fps | 98.3% |
| Somchem S365 | 66.4 gr | 80% | 25,657 psi | 58% | 2231 fps | 96% |
| Vihtavuori N150 | <<locked>> | 80% | 33,707 psi | 76% | 2333 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 31,966 psi | 72% | 2333 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 84% | 33,547 psi | 76% | 2385 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 30,095 psi | 68% | 2375 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,892 psi | 68% | 2260 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,137 psi | 64% | 2369 fps | 95.7% |
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 30 powders for .369 N.E. Purdey loaded with the .375 | 270gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 2,648 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,648 fps. Accurate 3100 gives the best case fill at 100 %, and 30 of the 30 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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, Alliant Reloder-16, Somchem S365 rank at the top here: for .369 N.E. Purdey with the .375 | 270gr | 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.