Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Nosler SP SolBase bullet and 17 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% | 35,346 psi | 87% | 2385 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,666 psi | 90% | 2415 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,187 psi | 89% | 2484 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 36,071 psi | 89% | 2415 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,433 psi | 87% | 2408 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 86% | 1604 fps | 100% |
| Norma 203B | <<locked>> | 82% | 36,695 psi | 90% | 2415 fps | 97% |
| Ramshot Big Game | <<locked>> | 82% | 36,085 psi | 89% | 2425 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 86% | 1640 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 36,187 psi | 89% | 2497 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 86% | 36,274 psi | 89% | 2411 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,157 psi | 87% | 2408 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,882 psi | 86% | 2283 fps | 99.8% |
| Somchem S355 | <<locked>> | 84% | 34,983 psi | 86% | 2369 fps | 96.9% |
| Somchem S365 | <<locked>> | 96% | 36,680 psi | 90% | 2503 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 90% | 35,853 psi | 88% | 2369 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,318 psi | 89% | 2388 fps | 97.2% |
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% | 33,011 psi | 81% | 2333 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,300 psi | 80% | 2316 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,821 psi | 78% | 2375 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 31,705 psi | 78% | 2316 fps | 96.5% |
| Hodgdon Hybrid 100V | 37.9 gr | 90% | 31,502 psi | 78% | 2316 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 64% | 1430 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,330 psi | 85% | 2365 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 33,823 psi | 83% | 2372 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,962 psi | 64% | 1463 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,834 psi | 73% | 2333 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 80% | 29,747 psi | 73% | 2260 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,967 psi | 81% | 2359 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,822 psi | 81% | 2241 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 30,821 psi | 76% | 2270 fps | 95.4% |
| Somchem S365 | 38.1 gr | 88% | 28,703 psi | 71% | 2303 fps | 95.8% |
| Vihtavuori N150 | 32.8 gr | 80% | 26,252 psi | 65% | 2139 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,865 psi | 78% | 2287 fps | 95.5% |
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 17 powders for 7 x 72 R loaded with the .284 | 150gr | Nosler SP SolBase. Somchem S365 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 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 86–90 %, 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. Hodgdon TrailBoss, ReloadSwiss RS 14 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 | Nosler SP SolBase 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.