Load Specifications
Load data in caliber .369 N.E. Purdey with .375 | 270gr | Atomic 29 HP bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 62, 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 39,726 psi | 90% | 2434 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 37,536 psi | 85% | 2428 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 38,754 psi | 88% | 2520 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 37,565 psi | 85% | 2405 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 39,421 psi | 89% | 2474 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 39,813 psi | 90% | 2484 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 39,233 psi | 89% | 2536 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 39,015 psi | 88% | 2562 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,375 psi | 80% | 2487 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,175 psi | 89% | 2625 fps | 97% |
| Bofors RP3 | <<locked>> | 84% | 38,798 psi | 88% | 2474 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 82% | 37,347 psi | 84% | 2428 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 38,247 psi | 86% | 2480 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,012 psi | 79% | 1614 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 39,407 psi | 89% | 2434 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 40,030 psi | 90% | 2526 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 39,175 psi | 89% | 2438 fps | 99.4% |
| Lovex S065 | <<locked>> | 88% | 38,653 psi | 87% | 2431 fps | 95.8% |
| Norma 203B | <<locked>> | 82% | 39,146 psi | 88% | 2474 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 39,175 psi | 89% | 2520 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 82% | 38,696 psi | 87% | 2487 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,331 psi | 80% | 1654 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 38,885 psi | 88% | 2569 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,740 psi | 88% | 2543 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,378 psi | 89% | 2556 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 38,870 psi | 88% | 2470 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,653 psi | 87% | 2431 fps | 95.8% |
| Shooters World Precision | <<locked>> | 82% | 39,175 psi | 89% | 2438 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 37,782 psi | 85% | 2477 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 39,552 psi | 89% | 2372 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 39,929 psi | 90% | 2477 fps | 99% |
| Somchem S365 | <<locked>> | 96% | 39,755 psi | 90% | 2575 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 86% | 38,043 psi | 86% | 2415 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 90% | 38,522 psi | 87% | 2474 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 82% | 39,610 psi | 90% | 2438 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 37,826 psi | 86% | 2474 fps | 96.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,043 psi | 86% | 2556 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 38,827 psi | 88% | 2457 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,488 psi | 71% | 2467 fps | 97.4% |
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 2495 | <<locked>> | 80% | 37,246 psi | 84% | 2392 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,259 psi | 80% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,357 psi | 71% | 2359 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 35,331 psi | 80% | 2356 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,563 psi | 78% | 2375 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,304 psi | 84% | 2434 fps | 97.6% |
| Alliant Reloder-16 | 67.4 gr | 86% | 32,532 psi | 74% | 2379 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,718 psi | 67% | 2336 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,414 psi | 66% | 2329 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,521 psi | 83% | 2566 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 33,895 psi | 77% | 2375 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 80% | 34,983 psi | 79% | 2379 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,775 psi | 63% | 2231 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 59% | 1440 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,057 psi | 84% | 2388 fps | 97.6% |
| IMR 4831 | <<locked>> | 88% | 32,764 psi | 74% | 2375 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 36,709 psi | 83% | 2388 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 36,274 psi | 82% | 2379 fps | 95% |
| Norma 203B | <<locked>> | 80% | 36,651 psi | 83% | 2425 fps | 98% |
| Norma URP | <<locked>> | 86% | 32,184 psi | 73% | 2365 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 36,129 psi | 82% | 2434 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 59% | 1476 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,705 psi | 72% | 2402 fps | 99% |
| ReloadSwiss RS 62 | 74.2 gr | 88% | 33,707 psi | 76% | 2431 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,666 psi | 83% | 2497 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 31,836 psi | 72% | 2320 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,274 psi | 82% | 2379 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 36,709 psi | 83% | 2388 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,054 psi | 75% | 2369 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,867 psi | 79% | 2287 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,938 psi | 74% | 2333 fps | 97.4% |
| Somchem S365 | 65.6 gr | 82% | 25,164 psi | 57% | 2211 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 31,256 psi | 71% | 2274 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 33,808 psi | 76% | 2372 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,144 psi | 84% | 2392 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,069 psi | 75% | 2372 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 31,285 psi | 71% | 2402 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,891 psi | 63% | 2198 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,457 psi | 67% | 2402 fps | 96.1% |
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 39 powders for .369 N.E. Purdey loaded with the .375 | 270gr | Atomic 29 HP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,625 fps; across all powders the maximum-charge window runs from 1,614 fps to 2,625 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 270.0 gr projectile in 0.375" calls for a 1:17.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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. ReloadSwiss RS 62, Alliant Reloder-16, Somchem S365 rank at the top here: for .369 N.E. Purdey with the .375 | 270gr | Atomic 29 HP 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.