Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 300gr | Nosler CT FailSafe 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, Somchem S365 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>> | 98% | 37,478 psi | 85% | 2339 fps | 96.3% |
| Accurate 4350 | <<locked>> | 88% | 37,507 psi | 85% | 2352 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 90% | 39,842 psi | 90% | 2408 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 39,639 psi | 90% | 2431 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,682 psi | 87% | 2418 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,001 psi | 90% | 2507 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 39,856 psi | 90% | 2349 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 39,001 psi | 88% | 2352 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,491 psi | 80% | 1519 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 38,682 psi | 87% | 2356 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 39,421 psi | 89% | 2306 fps | 97% |
| Lovex S070 | <<locked>> | 88% | 39,682 psi | 90% | 2329 fps | 96% |
| Norma URP | <<locked>> | 88% | 37,623 psi | 85% | 2349 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 39,233 psi | 89% | 2388 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,955 psi | 81% | 1555 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 39,552 psi | 89% | 2434 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,769 psi | 90% | 2418 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,842 psi | 90% | 2431 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 37,449 psi | 85% | 2297 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,421 psi | 89% | 2306 fps | 97% |
| Shooters World SW4350 | <<locked>> | 88% | 39,682 psi | 90% | 2329 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 38,479 psi | 87% | 2346 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 38,247 psi | 86% | 2300 fps | 99.3% |
| Somchem S365 | <<locked>> | 92% | 38,348 psi | 87% | 2405 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 38,943 psi | 88% | 2287 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 88% | 39,436 psi | 89% | 2349 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 88% | 38,812 psi | 88% | 2352 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 98% | 39,494 psi | 89% | 2438 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 39,305 psi | 89% | 2329 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,548 psi | 78% | 2431 fps | 99.6% |
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>> | 96% | 35,114 psi | 79% | 2293 fps | 95.5% |
| Accurate 4350 | <<locked>> | 82% | 30,487 psi | 69% | 2201 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,327 psi | 66% | 2165 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,474 psi | 73% | 2277 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,948 psi | 61% | 2136 fps | 95.7% |
| Alliant Reloder-26 | 76.7 gr | 92% | 32,634 psi | 74% | 2339 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 37,231 psi | 84% | 2300 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,818 psi | 61% | 2077 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 60% | 1355 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 29,762 psi | 67% | 2169 fps | 95.5% |
| Lovex S065 | <<locked>> | 82% | 34,824 psi | 79% | 2211 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 37,362 psi | 84% | 2283 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 31,038 psi | 70% | 2205 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 86% | 34,548 psi | 78% | 2287 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,818 psi | 61% | 1391 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,548 psi | 78% | 2333 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 30,414 psi | 69% | 2218 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 32,648 psi | 74% | 2270 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 35,157 psi | 79% | 2251 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,824 psi | 79% | 2211 fps | 95.6% |
| Shooters World SW4350 | <<locked>> | 86% | 37,362 psi | 84% | 2283 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,027 psi | 81% | 2297 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,984 psi | 81% | 2257 fps | 98.9% |
| Somchem S365 | 61.7 gr | 80% | 26,078 psi | 59% | 2113 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 34,185 psi | 77% | 2198 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 30,458 psi | 69% | 2159 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 82% | 31,865 psi | 72% | 2208 fps | 95.8% |
| Vihtavuori N555 | 66.9 gr | 88% | 28,660 psi | 65% | 2201 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,284 psi | 68% | 2139 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,861 psi | 61% | 2205 fps | 96.2% |
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 | 300gr | Nosler CT FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,507 fps; across all powders the maximum-charge window runs from 1,519 fps to 2,507 fps. Alliant Reloder-23 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 78–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.375" calls for a 1:16.0 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, Somchem S365, Vihtavuori N555 rank at the top here: for .369 N.E. Purdey with the .375 | 300gr | Nosler CT FailSafe 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.