Load Specifications
Load data in caliber 7 x 72 R with .284 | 130gr | Barnes X BT bullet and 14 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 36,709 psi | 90% | 2526 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 35,969 psi | 89% | 2523 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,969 psi | 89% | 2526 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 35,868 psi | 88% | 2536 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 86% | 1706 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 36,651 psi | 90% | 2569 fps | 99.7% |
| Lovex S062 | <<locked>> | 82% | 36,666 psi | 90% | 2503 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,302 psi | 87% | 1749 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,723 psi | 88% | 2598 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 36,666 psi | 90% | 2503 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,637 psi | 90% | 2451 fps | 99.3% |
| Somchem S365 | <<locked>> | 96% | 35,955 psi | 89% | 2602 fps | 96.4% |
| Vihtavuori N135 | <<locked>> | 82% | 35,824 psi | 88% | 2507 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 90% | 35,317 psi | 87% | 2484 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% | 34,693 psi | 85% | 2480 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 34,127 psi | 84% | 2477 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,055 psi | 84% | 2484 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 33,736 psi | 83% | 2484 fps | 95% |
| Hodgdon TrailBoss | 11.6 gr | 80% | 26,368 psi | 65% | 1529 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 34,635 psi | 85% | 2520 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 34,722 psi | 86% | 2461 fps | 95.8% |
| ReloadSwiss RS 14 | 11.8 gr | 80% | 26,571 psi | 65% | 1565 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 31,792 psi | 78% | 2487 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 34,722 psi | 86% | 2461 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,561 psi | 80% | 2356 fps | 98.5% |
| Somchem S365 | <<locked>> | 94% | 34,113 psi | 84% | 2552 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 33,794 psi | 83% | 2461 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 86% | 31,662 psi | 78% | 2395 fps | 95.3% |
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 14 powders for 7 x 72 R loaded with the .284 | 130gr | Barnes X BT. Somchem S365 delivers the highest muzzle velocity at 2,602 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,602 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 14 of the 14 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 86–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:11.0 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 14, Hodgdon TrailBoss rank at the top here: for 7 x 72 R with the .284 | 130gr | Barnes X 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.