Load Specifications
Load data in caliber 7 x 72 R with .284 | 130gr | Sierra SP SSPistol bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, 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% | 36,303 psi | 89% | 2569 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 36,579 psi | 90% | 2598 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,926 psi | 88% | 2582 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 35,346 psi | 87% | 2582 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,418 psi | 85% | 1736 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 36,724 psi | 90% | 2595 fps | 98.5% |
| Lovex S062 | <<locked>> | 84% | 36,158 psi | 89% | 2552 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 85% | 1778 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,781 psi | 88% | 2657 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 82% | 35,911 psi | 88% | 2523 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,724 psi | 90% | 2595 fps | 98.5% |
| Shooters World Precision | <<locked>> | 84% | 36,158 psi | 89% | 2552 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 36,593 psi | 90% | 2500 fps | 99.5% |
| Somchem S355 | <<locked>> | 88% | 36,564 psi | 90% | 2585 fps | 96% |
| Somchem S365 | <<locked>> | 98% | 36,042 psi | 89% | 2661 fps | 97.1% |
| Vihtavuori N135 | <<locked>> | 82% | 34,519 psi | 85% | 2523 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 82% | 35,839 psi | 88% | 2530 fps | 99% |
| Vihtavuori N150 | <<locked>> | 88% | 34,766 psi | 86% | 2523 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 36,666 psi | 90% | 2562 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 82% | 36,201 psi | 89% | 2582 fps | 95.9% |
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% | 32,024 psi | 79% | 2474 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 30,298 psi | 75% | 2451 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,692 psi | 83% | 2526 fps | 95.5% |
| Bofors RP3 | <<locked>> | 84% | 33,098 psi | 82% | 2530 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 63% | 1549 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 34,418 psi | 85% | 2543 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 32,024 psi | 79% | 2451 fps | 95.3% |
| ReloadSwiss RS 14 | 12.5 gr | 80% | 25,744 psi | 63% | 1591 fps | 100% |
| ReloadSwiss RS 60 | 39.9 gr | 84% | 31,386 psi | 77% | 2536 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 33,678 psi | 83% | 2470 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,418 psi | 85% | 2543 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 32,024 psi | 79% | 2451 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,458 psi | 75% | 2362 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 34,301 psi | 84% | 2533 fps | 95.1% |
| Somchem S365 | <<locked>> | 94% | 31,807 psi | 78% | 2552 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 32,518 psi | 80% | 2477 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,562 psi | 83% | 2477 fps | 98.5% |
| Vihtavuori N150 | 37.6 gr | 84% | 30,530 psi | 75% | 2418 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 32,068 psi | 79% | 2457 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,779 psi | 83% | 2523 fps | 95% |
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 | 130gr | Sierra SP SSPistol. Somchem S365 delivers the highest muzzle velocity at 2,661 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,661 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 130.0 gr projectile in 0.284" calls for a 1:13.5 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. ReloadSwiss RS 60, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 130gr | Sierra SP SSPistol 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.