Load Specifications
Load data in caliber 7 x 72 R with .287 | 175gr | Woodleigh PP SN bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Vihtavuori N555 and Alliant Reloder-16.
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 4350 | <<locked>> | 90% | 36,448 psi | 90% | 2274 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,012 psi | 86% | 2241 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 36,622 psi | 90% | 2306 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,766 psi | 88% | 2293 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 36,071 psi | 89% | 2234 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 87% | 1467 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 35,433 psi | 87% | 2234 fps | 96.9% |
| Norma URP | <<locked>> | 88% | 34,722 psi | 86% | 2228 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,534 psi | 88% | 1499 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 36,724 psi | 90% | 2316 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,361 psi | 90% | 2290 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 34,693 psi | 85% | 2185 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,549 psi | 88% | 2228 fps | 97.9% |
| Somchem S355 | <<locked>> | 82% | 35,592 psi | 88% | 2188 fps | 98.4% |
| Somchem S365 | <<locked>> | 92% | 35,360 psi | 87% | 2283 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 36,143 psi | 89% | 2178 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 88% | 36,390 psi | 90% | 2228 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,694 psi | 88% | 2231 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 98% | 35,795 psi | 88% | 2306 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,637 psi | 90% | 2215 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,778 psi | 78% | 2280 fps | 97.9% |
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 4350 | <<locked>> | 86% | 31,908 psi | 79% | 2178 fps | 95.7% |
| Alliant Reloder-16 | 34.5 gr | 86% | 32,982 psi | 81% | 2195 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,081 psi | 74% | 2152 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,050 psi | 69% | 2106 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,166 psi | 69% | 2057 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 65% | 1306 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 31,256 psi | 77% | 2146 fps | 95.4% |
| Norma URP | <<locked>> | 86% | 32,619 psi | 80% | 2182 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 65% | 1339 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,053 psi | 79% | 2211 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 31,923 psi | 79% | 2195 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 32,561 psi | 80% | 2142 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,446 psi | 82% | 2182 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 33,417 psi | 82% | 2146 fps | 97.9% |
| Somchem S365 | 32.7 gr | 80% | 24,134 psi | 59% | 1998 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 31,850 psi | 78% | 2093 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 32,169 psi | 79% | 2139 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 86% | 33,547 psi | 83% | 2188 fps | 95.7% |
| Vihtavuori N555 | 37.1 gr | 92% | 29,689 psi | 73% | 2169 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,224 psi | 70% | 2024 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,094 psi | 69% | 2169 fps | 95.6% |
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 | 175gr | Woodleigh PP SN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,316 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,316 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 175.0 gr projectile in 0.287" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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, Vihtavuori N555, Alliant Reloder-16 rank at the top here: for 7 x 72 R with the .287 | 175gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-19, Alliant Reloder-25, 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.