Load Specifications
Load data in caliber 7 x 72 R with .284 | 120gr | Nosler FN 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 35,172 psi | 87% | 2657 fps | 99.8% |
| Accurate 4064 | <<locked>> | 86% | 35,578 psi | 88% | 2690 fps | 98.6% |
| Bofors RP3 | <<locked>> | 88% | 36,564 psi | 90% | 2717 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,997 psi | 84% | 1818 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 35,404 psi | 87% | 2707 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 82% | 35,476 psi | 87% | 2677 fps | 97.6% |
| Norma 202 | <<locked>> | 82% | 36,680 psi | 90% | 2677 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,476 psi | 85% | 1864 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 34,867 psi | 86% | 2736 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 35,476 psi | 87% | 2677 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,665 psi | 88% | 2589 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 36,129 psi | 89% | 2598 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 35,926 psi | 88% | 2667 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 84% | 36,448 psi | 90% | 2654 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 94% | 36,289 psi | 89% | 2667 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 84% | 36,143 psi | 89% | 2671 fps | 98.3% |
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% | 30,850 psi | 76% | 2552 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 29,196 psi | 72% | 2523 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 34,301 psi | 84% | 2664 fps | 95% |
| Hodgdon TrailBoss | 12.7 gr | 80% | 25,353 psi | 62% | 1627 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 31,227 psi | 77% | 2602 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 33,301 psi | 82% | 2625 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 34,447 psi | 85% | 2628 fps | 97.9% |
| ReloadSwiss RS 14 | 12.9 gr | 80% | 25,367 psi | 62% | 1663 fps | 100% |
| ReloadSwiss RS 60 | 42.4 gr | 86% | 32,648 psi | 80% | 2671 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,301 psi | 82% | 2625 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,660 psi | 73% | 2441 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 33,910 psi | 84% | 2546 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 31,473 psi | 78% | 2562 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 32,155 psi | 79% | 2552 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 90% | 31,981 psi | 79% | 2562 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,720 psi | 78% | 2562 fps | 97% |
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 46 powders for 7 x 72 R loaded with the .284 | 120gr | Nosler FN. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,818 fps to 2,769 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 46 of the 46 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 1:15.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 4831, 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 | Nosler FN 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.