Load Specifications
Load data in caliber 7 x 72 R with .284 | 120gr | Sierra Pro-Hunter bullet and 16 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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% | 35,491 psi | 87% | 2667 fps | 99.9% |
| Accurate 4064 | <<locked>> | 86% | 35,868 psi | 88% | 2697 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,272 psi | 84% | 1824 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 36,550 psi | 90% | 2736 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 82% | 35,810 psi | 88% | 2687 fps | 97.7% |
| Lovex S062 | <<locked>> | 84% | 35,433 psi | 87% | 2648 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,461 psi | 85% | 1867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,114 psi | 86% | 2749 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 35,810 psi | 88% | 2687 fps | 97.7% |
| Shooters World Precision | <<locked>> | 84% | 35,433 psi | 87% | 2648 fps | 95.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,955 psi | 89% | 2598 fps | 99.1% |
| Somchem S365 | <<locked>> | 98% | 35,288 psi | 87% | 2749 fps | 96% |
| Vihtavuori N135 | <<locked>> | 84% | 35,998 psi | 89% | 2671 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 82% | 34,911 psi | 86% | 2621 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 90% | 36,521 psi | 90% | 2671 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 84% | 36,013 psi | 89% | 2661 fps | 98.2% |
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 2495 | <<locked>> | 80% | 31,227 psi | 77% | 2566 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 29,530 psi | 73% | 2536 fps | 96.8% |
| Hodgdon TrailBoss | 12.8 gr | 80% | 25,396 psi | 63% | 1631 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 34,200 psi | 84% | 2680 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,634 psi | 83% | 2635 fps | 97.1% |
| Lovex S062 | <<locked>> | 82% | 33,344 psi | 82% | 2595 fps | 95.1% |
| ReloadSwiss RS 14 | 13 gr | 80% | 25,411 psi | 63% | 1667 fps | 100% |
| ReloadSwiss RS 60 | 42.7 gr | 86% | 32,866 psi | 81% | 2684 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,634 psi | 83% | 2635 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 33,344 psi | 82% | 2595 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,733 psi | 73% | 2448 fps | 97.5% |
| Somchem S365 | <<locked>> | 96% | 33,054 psi | 81% | 2687 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 31,604 psi | 78% | 2566 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 32,822 psi | 81% | 2569 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 86% | 31,995 psi | 79% | 2559 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 31,488 psi | 78% | 2546 fps | 96.9% |
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 16 powders for 7 x 72 R loaded with the .284 | 120gr | Sierra Pro-Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,824 fps to 2,749 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 of the 16 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:16.0 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. ReloadSwiss RS 60, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 7 x 72 R with the .284 | 120gr | Sierra Pro-Hunter 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.