Load Specifications
Load data in caliber 7 x 72 R with .287 | 160gr | Woodleigh PP SN bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Hodgdon Hybrid 100V 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 4064 | <<locked>> | 82% | 36,666 psi | 90% | 2323 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 82% | 36,405 psi | 90% | 2290 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,781 psi | 88% | 2313 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,041 psi | 86% | 2379 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,910 psi | 84% | 2356 fps | 96.9% |
| Bofors RP3 | <<locked>> | 82% | 34,998 psi | 86% | 2310 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,622 psi | 90% | 2352 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 86% | 1542 fps | 100% |
| IMR 4831 | <<locked>> | 92% | 35,824 psi | 88% | 2352 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 87% | 1581 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 34,954 psi | 86% | 2388 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 35,201 psi | 87% | 2306 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,260 psi | 89% | 2352 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 35,911 psi | 88% | 2221 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 36,201 psi | 89% | 2313 fps | 97.9% |
| Somchem S365 | <<locked>> | 94% | 35,679 psi | 88% | 2402 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 36,666 psi | 90% | 2300 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,071 psi | 89% | 2425 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,041 psi | 86% | 2287 fps | 97.5% |
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 4064 | <<locked>> | 80% | 34,229 psi | 84% | 2277 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,301 psi | 84% | 2244 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,402 psi | 82% | 2260 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,719 psi | 76% | 2270 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,240 psi | 74% | 2260 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 32,648 psi | 80% | 2260 fps | 97.4% |
| Hodgdon Hybrid 100V | 36.1 gr | 88% | 30,385 psi | 75% | 2211 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 64% | 1375 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 33,692 psi | 83% | 2306 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,368 psi | 65% | 1414 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,647 psi | 75% | 2280 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 30,835 psi | 76% | 2211 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,995 psi | 79% | 2257 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,721 psi | 83% | 2178 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 31,850 psi | 78% | 2218 fps | 96.5% |
| Somchem S365 | 35.5 gr | 84% | 26,165 psi | 64% | 2156 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 30,226 psi | 74% | 2165 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 96% | 31,981 psi | 79% | 2329 fps | 95.3% |
| Winchester 6.5 StaBALL | 38.4 gr | 84% | 30,864 psi | 76% | 2188 fps | 95.9% |
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 44 powders for 7 x 72 R loaded with the .287 | 160gr | Woodleigh PP SN. Vihtavuori N555 delivers the highest muzzle velocity at 2,425 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,425 fps. Accurate 3100 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.287" calls for a 1:12.0 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. Somchem S365, Hodgdon Hybrid 100V, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .287 | 160gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Bofors RP7 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.