Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 270gr | Barnes X S bullet and 25 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 62.
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 4350 | <<locked>> | 88% | 39,334 psi | 89% | 2500 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 38,653 psi | 87% | 2497 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 38,392 psi | 87% | 2523 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,001 psi | 90% | 2559 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,986 psi | 88% | 2595 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 37,985 psi | 86% | 2448 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 81% | 1621 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 37,695 psi | 85% | 2451 fps | 97.2% |
| Lovex S065 | <<locked>> | 84% | 38,783 psi | 88% | 2402 fps | 95.8% |
| Norma URP | <<locked>> | 88% | 39,001 psi | 88% | 2490 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 83% | 1660 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 38,232 psi | 86% | 2526 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,638 psi | 87% | 2510 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,566 psi | 87% | 2513 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 82% | 39,378 psi | 89% | 2444 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,783 psi | 88% | 2402 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 39,726 psi | 90% | 2487 fps | 98.6% |
| Somchem S355 | <<locked>> | 82% | 40,001 psi | 90% | 2448 fps | 99% |
| Somchem S365 | <<locked>> | 92% | 39,668 psi | 90% | 2546 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 37,985 psi | 86% | 2385 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 86% | 38,319 psi | 87% | 2441 fps | 97% |
| Vihtavuori N550 | <<locked>> | 86% | 37,826 psi | 86% | 2444 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 96% | 38,682 psi | 87% | 2536 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 38,087 psi | 86% | 2418 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,114 psi | 82% | 2569 fps | 99.1% |
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 4350 | <<locked>> | 82% | 32,634 psi | 74% | 2352 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,619 psi | 74% | 2349 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,982 psi | 77% | 2418 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,776 psi | 65% | 2277 fps | 95.2% |
| Alliant Reloder-26 | 79.9 gr | 92% | 34,360 psi | 78% | 2480 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,543 psi | 65% | 2215 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 61% | 1447 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 31,502 psi | 71% | 2310 fps | 95% |
| Lovex S065 | <<locked>> | 82% | 36,550 psi | 83% | 2352 fps | 95% |
| Norma URP | <<locked>> | 82% | 32,648 psi | 74% | 2343 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 62% | 1483 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,969 psi | 81% | 2477 fps | 99.8% |
| ReloadSwiss RS 62 | 71.1 gr | 84% | 34,127 psi | 77% | 2408 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,245 psi | 82% | 2457 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 37,072 psi | 84% | 2398 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,550 psi | 83% | 2352 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,304 psi | 84% | 2434 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 37,681 psi | 85% | 2398 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 27,978 psi | 63% | 2260 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 35,766 psi | 81% | 2339 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 34,040 psi | 77% | 2346 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 82% | 33,504 psi | 76% | 2349 fps | 95.2% |
| Vihtavuori N555 | 69.7 gr | 88% | 30,690 psi | 69% | 2349 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,821 psi | 72% | 2274 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,761 psi | 65% | 2346 fps | 95.5% |
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 25 powders for .369 N.E. Purdey loaded with the .375 | 270gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 2,595 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,595 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 25 of the 25 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 270.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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. Alliant Reloder-26, Vihtavuori N555, ReloadSwiss RS 62 rank at the top here: for .369 N.E. Purdey with the .375 | 270gr | Barnes X S 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.