Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Norma FMJ SemiP bullet and 16 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% | 35,447 psi | 87% | 2388 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,664 psi | 85% | 2372 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,535 psi | 90% | 2493 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 36,187 psi | 89% | 2418 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,752 psi | 88% | 2418 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,838 psi | 86% | 1604 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 36,143 psi | 89% | 2428 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,230 psi | 87% | 1644 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 36,230 psi | 89% | 2500 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 86% | 36,347 psi | 90% | 2415 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,273 psi | 87% | 2415 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,983 psi | 86% | 2287 fps | 99.8% |
| Somchem S355 | <<locked>> | 84% | 35,070 psi | 86% | 2372 fps | 97% |
| Somchem S365 | <<locked>> | 94% | 34,679 psi | 85% | 2457 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 86% | 35,665 psi | 88% | 2365 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,361 psi | 90% | 2392 fps | 97.3% |
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% | 33,112 psi | 82% | 2336 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,401 psi | 80% | 2320 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,894 psi | 79% | 2379 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 31,792 psi | 78% | 2320 fps | 96.5% |
| Hodgdon Hybrid 100V | 38 gr | 90% | 31,589 psi | 78% | 2316 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 64% | 1434 fps | 100% |
| Ramshot Big Game | <<locked>> | 80% | 33,895 psi | 83% | 2375 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 64% | 1470 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,921 psi | 74% | 2336 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 80% | 29,849 psi | 74% | 2264 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,054 psi | 81% | 2359 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,924 psi | 81% | 2244 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 30,922 psi | 76% | 2277 fps | 95.5% |
| Somchem S365 | 38.2 gr | 88% | 28,790 psi | 71% | 2306 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,356 psi | 72% | 2221 fps | 96.5% |
| Winchester 6.5 StaBALL | 40.4 gr | 86% | 32,126 psi | 79% | 2293 fps | 95.7% |
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 38 powders for 7 x 72 R loaded with the .284 | 150gr | Norma FMJ SemiP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,530 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,530 fps. Accurate 3100 gives the best case fill at 100 %, and 38 of the 38 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 .284 | 150gr | Norma FMJ SemiP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, 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.