Load Specifications
Load data in caliber 7 x 72 R with .284 | 154gr | Reichenberg HDB Universal bullet and 28 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% | 36,216 psi | 89% | 2326 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 36,390 psi | 90% | 2359 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 84% | 36,550 psi | 90% | 2323 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,708 psi | 88% | 2346 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,071 psi | 89% | 2352 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,215 psi | 87% | 2411 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 34,867 psi | 86% | 2343 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,579 psi | 90% | 2382 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 36,637 psi | 90% | 2402 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 85% | 1555 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,289 psi | 89% | 2326 fps | 97.2% |
| IMR 3031 | <<locked>> | 82% | 36,245 psi | 89% | 2369 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 35,737 psi | 88% | 2300 fps | 96% |
| Lovex S062 | <<locked>> | 82% | 35,781 psi | 88% | 2316 fps | 98% |
| Norma 203B | <<locked>> | 82% | 35,462 psi | 87% | 2343 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 82% | 34,882 psi | 86% | 2349 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,940 psi | 86% | 1594 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,128 psi | 87% | 2421 fps | 99% |
| Rottweil R 903 | <<locked>> | 86% | 35,114 psi | 86% | 2339 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 35,781 psi | 88% | 2316 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,332 psi | 89% | 2385 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,303 psi | 89% | 2264 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 36,172 psi | 89% | 2349 fps | 97.3% |
| Somchem S365 | <<locked>> | 96% | 35,534 psi | 88% | 2428 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 36,637 psi | 90% | 2326 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 34,693 psi | 85% | 2300 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 36,680 psi | 90% | 2339 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,389 psi | 87% | 2320 fps | 96.8% |
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% | 33,939 psi | 84% | 2283 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,097 psi | 79% | 2267 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 34,389 psi | 85% | 2277 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,473 psi | 78% | 2254 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,924 psi | 84% | 2303 fps | 95.3% |
| Alliant Reloder-17 | 37.3 gr | 86% | 32,938 psi | 81% | 2356 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 30,690 psi | 76% | 2247 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,358 psi | 80% | 2290 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,213 psi | 79% | 2300 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 64% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,127 psi | 84% | 2280 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 33,924 psi | 84% | 2323 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,852 psi | 83% | 2260 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 33,620 psi | 83% | 2267 fps | 97.4% |
| Norma 203B | <<locked>> | 80% | 33,286 psi | 82% | 2293 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 32,837 psi | 81% | 2300 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 64% | 1427 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,950 psi | 71% | 2257 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 82% | 30,864 psi | 76% | 2247 fps | 95.8% |
| Shooters World Precision | <<locked>> | 80% | 33,620 psi | 83% | 2267 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,024 psi | 79% | 2287 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,966 psi | 79% | 2178 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 30,037 psi | 74% | 2208 fps | 95.1% |
| Somchem S365 | 36.2 gr | 88% | 27,731 psi | 68% | 2228 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 34,316 psi | 85% | 2280 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 27,151 psi | 67% | 2123 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 34,476 psi | 85% | 2297 fps | 99.3% |
| Winchester 6.5 StaBALL | 38.3 gr | 86% | 31,125 psi | 77% | 2218 fps | 95.1% |
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 28 powders for 7 x 72 R loaded with the .284 | 154gr | Reichenberg HDB Universal. Somchem S365 delivers the highest muzzle velocity at 2,428 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,428 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 28 of the 28 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 154.0 gr projectile in 0.284" calls for a 1:10.0 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, Alliant Reloder-17, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .284 | 154gr | Reichenberg HDB Universal 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.