Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Norma Soft Point bullet and 20 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 Vihtavuori N150.
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% | 35,360 psi | 87% | 2385 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,592 psi | 85% | 2369 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,376 psi | 90% | 2490 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 36,376 psi | 90% | 2425 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,650 psi | 88% | 2415 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,592 psi | 88% | 2428 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,751 psi | 86% | 1604 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,679 psi | 85% | 2326 fps | 95.7% |
| Norma 203B | <<locked>> | 82% | 36,666 psi | 90% | 2418 fps | 97% |
| Ramshot Big Game | <<locked>> | 82% | 36,274 psi | 89% | 2431 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,143 psi | 87% | 1644 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 36,376 psi | 90% | 2503 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 86% | 36,550 psi | 90% | 2421 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,375 psi | 87% | 2415 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 35,172 psi | 87% | 2290 fps | 99.8% |
| Somchem S355 | <<locked>> | 84% | 35,244 psi | 87% | 2375 fps | 97.1% |
| Somchem S365 | <<locked>> | 94% | 34,563 psi | 85% | 2457 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 90% | 36,100 psi | 89% | 2375 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,940 psi | 86% | 2480 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,477 psi | 90% | 2395 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% | 33,286 psi | 82% | 2339 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,561 psi | 80% | 2323 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,039 psi | 79% | 2382 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,720 psi | 78% | 2320 fps | 96.5% |
| Hodgdon Hybrid 100V | 38 gr | 90% | 31,488 psi | 78% | 2316 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,301 psi | 82% | 2375 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,947 psi | 64% | 1434 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,677 psi | 80% | 2280 fps | 95% |
| Norma 203B | <<locked>> | 80% | 34,577 psi | 85% | 2372 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 33,808 psi | 83% | 2372 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,107 psi | 64% | 1467 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,008 psi | 74% | 2339 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 80% | 29,979 psi | 74% | 2267 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,214 psi | 82% | 2365 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,069 psi | 81% | 2247 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 31,082 psi | 77% | 2280 fps | 95.6% |
| Somchem S365 | 38.2 gr | 88% | 28,689 psi | 71% | 2303 fps | 95.8% |
| Vihtavuori N150 | 33 gr | 80% | 26,484 psi | 65% | 2146 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 98% | 32,982 psi | 81% | 2434 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,039 psi | 79% | 2290 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 20 powders for 7 x 72 R loaded with the .284 | 150gr | Norma Soft Point. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,503 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,503 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 85–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N555 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, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 150gr | Norma Soft Point 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.