Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Nosler Partition bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Alliant Reloder-17 and Winchester 6.5 StaBALL.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 36,463 psi | 90% | 2372 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 34,432 psi | 85% | 2359 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,882 psi | 88% | 2392 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,535 psi | 90% | 2402 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,592 psi | 88% | 2461 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 35,288 psi | 87% | 2392 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,824 psi | 86% | 2385 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,592 psi | 85% | 2395 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 86% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,564 psi | 90% | 2372 fps | 97.2% |
| IMR 3031 | <<locked>> | 82% | 36,651 psi | 90% | 2418 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 36,027 psi | 89% | 2349 fps | 96% |
| Lovex S062 | <<locked>> | 82% | 36,013 psi | 89% | 2362 fps | 97.9% |
| Norma 203B | <<locked>> | 82% | 35,868 psi | 88% | 2392 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 82% | 35,389 psi | 87% | 2402 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 87% | 1634 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,563 psi | 88% | 2474 fps | 99% |
| Rottweil R 903 | <<locked>> | 86% | 35,462 psi | 87% | 2388 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 36,013 psi | 89% | 2362 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,519 psi | 85% | 2385 fps | 95.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,550 psi | 90% | 2310 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 36,608 psi | 90% | 2395 fps | 97.3% |
| Somchem S365 | <<locked>> | 96% | 35,868 psi | 88% | 2477 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 90% | 35,099 psi | 86% | 2346 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,621 psi | 88% | 2365 fps | 96.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 34,272 psi | 84% | 2329 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,401 psi | 80% | 2313 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,734 psi | 78% | 2297 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,142 psi | 84% | 2349 fps | 95.3% |
| Alliant Reloder-17 | 38.5 gr | 86% | 33,359 psi | 82% | 2405 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 30,922 psi | 76% | 2293 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,808 psi | 81% | 2339 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,619 psi | 80% | 2349 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 64% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,403 psi | 85% | 2326 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 34,374 psi | 85% | 2372 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,881 psi | 83% | 2300 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 33,924 psi | 84% | 2316 fps | 97.3% |
| Norma 203B | <<locked>> | 80% | 33,547 psi | 83% | 2339 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 33,170 psi | 82% | 2349 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 64% | 1457 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,254 psi | 72% | 2306 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,082 psi | 77% | 2290 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 33,924 psi | 84% | 2316 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,329 psi | 80% | 2333 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,285 psi | 80% | 2224 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 30,298 psi | 75% | 2251 fps | 95% |
| Somchem S365 | 37.3 gr | 88% | 27,949 psi | 69% | 2270 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 82% | 27,427 psi | 68% | 2165 fps | 95.5% |
| Winchester 6.5 StaBALL | 39.5 gr | 86% | 31,430 psi | 77% | 2264 fps | 95.1% |
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 50 powders for 7 x 72 R loaded with the .284 | 150gr | Nosler Partition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,497 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,497 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.5 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. Somchem S365, Alliant Reloder-17, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .284 | 150gr | Nosler Partition they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Reloder-16, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.