Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Prvi Partizan HP BT bullet and 27 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Alliant Reloder-17 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 2495 | <<locked>> | 82% | 36,289 psi | 89% | 2369 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 36,419 psi | 90% | 2398 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 84% | 36,608 psi | 90% | 2362 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,723 psi | 88% | 2385 fps | 97.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,100 psi | 89% | 2392 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,273 psi | 87% | 2451 fps | 96.6% |
| Bofors RP3 | <<locked>> | 84% | 35,128 psi | 87% | 2388 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,593 psi | 90% | 2421 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,461 psi | 85% | 2392 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,751 psi | 86% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,390 psi | 90% | 2365 fps | 97.1% |
| IMR 3031 | <<locked>> | 82% | 36,434 psi | 90% | 2411 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 35,853 psi | 88% | 2343 fps | 95.9% |
| Lovex S062 | <<locked>> | 82% | 35,839 psi | 88% | 2356 fps | 97.8% |
| Norma 203B | <<locked>> | 82% | 35,491 psi | 87% | 2382 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 82% | 35,041 psi | 86% | 2388 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 87% | 1631 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,244 psi | 87% | 2461 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 86% | 35,027 psi | 86% | 2375 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 35,839 psi | 88% | 2356 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,492 psi | 90% | 2428 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,390 psi | 90% | 2303 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 36,172 psi | 89% | 2385 fps | 97.1% |
| Somchem S365 | <<locked>> | 96% | 35,534 psi | 88% | 2464 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 90% | 34,969 psi | 86% | 2343 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 36,695 psi | 90% | 2379 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,346 psi | 87% | 2356 fps | 96.6% |
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 2495 | <<locked>> | 80% | 34,069 psi | 84% | 2323 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,213 psi | 79% | 2306 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 34,461 psi | 85% | 2316 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,299 psi | 77% | 2283 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,026 psi | 84% | 2343 fps | 95.2% |
| Alliant Reloder-17 | 38.2 gr | 86% | 33,054 psi | 81% | 2395 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 30,763 psi | 76% | 2287 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,489 psi | 80% | 2326 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,242 psi | 79% | 2336 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 63% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,258 psi | 84% | 2320 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 34,142 psi | 84% | 2365 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,750 psi | 83% | 2293 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 33,750 psi | 83% | 2310 fps | 97.2% |
| Norma 203B | <<locked>> | 80% | 33,402 psi | 82% | 2333 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 32,822 psi | 81% | 2336 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,846 psi | 64% | 1450 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,935 psi | 71% | 2293 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 30,937 psi | 76% | 2283 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 33,750 psi | 83% | 2310 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,142 psi | 84% | 2375 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,879 psi | 79% | 2211 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 32,053 psi | 79% | 2293 fps | 95.7% |
| Somchem S365 | 37.1 gr | 88% | 27,862 psi | 69% | 2267 fps | 95% |
| Vihtavuori N150 | <<locked>> | 82% | 27,282 psi | 67% | 2159 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,548 psi | 85% | 2336 fps | 99.2% |
| Winchester 6.5 StaBALL | 40.1 gr | 88% | 33,170 psi | 82% | 2306 fps | 95.8% |
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 27 powders for 7 x 72 R loaded with the .284 | 150gr | Prvi Partizan HP BT. Somchem S365 delivers the highest muzzle velocity at 2,464 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,464 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 27 of the 27 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 1:11.5 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, Alliant Reloder-17, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .284 | 150gr | Prvi Partizan HP BT 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.