Load Specifications
Load data in caliber 7 x 72 R with .284 | 139gr | Reichenberg HDB Universal bullet and 23 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Vihtavuori N150 and ReloadSwiss RS 14.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 36,651 psi | 90% | 2477 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 34,577 psi | 85% | 2461 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,376 psi | 90% | 2497 fps | 96.9% |
| Bofors RP3 | <<locked>> | 86% | 35,650 psi | 88% | 2493 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,128 psi | 87% | 2500 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 85% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,940 psi | 86% | 2428 fps | 95.8% |
| IMR 3031 | <<locked>> | 82% | 34,490 psi | 85% | 2474 fps | 99.8% |
| Lovex S062 | <<locked>> | 84% | 36,419 psi | 90% | 2464 fps | 97.3% |
| Norma 203B | <<locked>> | 84% | 36,201 psi | 89% | 2493 fps | 95.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,809 psi | 86% | 1699 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,998 psi | 89% | 2572 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 36,289 psi | 89% | 2438 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 88% | 35,578 psi | 88% | 2484 fps | 96.4% |
| Shooters World Precision | <<locked>> | 84% | 36,419 psi | 90% | 2464 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 34,650 psi | 85% | 2365 fps | 99.4% |
| Somchem S355 | <<locked>> | 86% | 34,693 psi | 85% | 2448 fps | 95.8% |
| Somchem S365 | <<locked>> | 98% | 36,100 psi | 89% | 2572 fps | 97.6% |
| Vihtavuori N135 | <<locked>> | 82% | 34,867 psi | 86% | 2431 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,056 psi | 89% | 2438 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 88% | 35,041 psi | 86% | 2434 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 82% | 34,519 psi | 85% | 2421 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,289 psi | 89% | 2461 fps | 96% |
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% | 32,097 psi | 79% | 2382 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 30,400 psi | 75% | 2362 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,981 psi | 79% | 2395 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 31,067 psi | 77% | 2385 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,895 psi | 81% | 2444 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 63% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,909 psi | 81% | 2382 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 32,343 psi | 80% | 2425 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 32,314 psi | 80% | 2369 fps | 96% |
| Norma 203B | <<locked>> | 82% | 34,098 psi | 84% | 2444 fps | 95% |
| ReloadSwiss RS 14 | 11.9 gr | 80% | 25,759 psi | 63% | 1519 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,733 psi | 73% | 2398 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 34,200 psi | 84% | 2392 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 33,489 psi | 82% | 2438 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 32,314 psi | 80% | 2369 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,661 psi | 76% | 2277 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 32,474 psi | 80% | 2395 fps | 95% |
| Somchem S365 | 39.6 gr | 92% | 30,124 psi | 74% | 2415 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 32,721 psi | 81% | 2385 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,736 psi | 83% | 2388 fps | 98.9% |
| Vihtavuori N150 | 35.1 gr | 82% | 28,993 psi | 71% | 2290 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 32,343 psi | 80% | 2372 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,069 psi | 84% | 2411 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 47 powders for 7 x 72 R loaded with the .284 | 139gr | Reichenberg HDB Universal. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,572 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon TrailBoss, IMR 4831 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, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 139gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2208, Alliant Power Pro 2000-MR 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.