Load Specifications
Load data in caliber 7 x 72 R with .284 | 120gr | Prvi Partizan HP bullet and 19 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>> | 82% | 35,244 psi | 87% | 2667 fps | 99.7% |
| Accurate 2520 | <<locked>> | 82% | 36,143 psi | 89% | 2680 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 36,114 psi | 89% | 2690 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 82% | 36,405 psi | 90% | 2697 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,781 psi | 88% | 2677 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,055 psi | 84% | 1801 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 36,187 psi | 89% | 2713 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 84% | 36,405 psi | 90% | 2687 fps | 97.6% |
| Norma 202 | <<locked>> | 82% | 35,244 psi | 87% | 2631 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,939 psi | 84% | 1837 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 35,665 psi | 88% | 2740 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 36,405 psi | 90% | 2687 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 36,709 psi | 90% | 2598 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 36,651 psi | 90% | 2598 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 34,867 psi | 86% | 2556 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 86% | 36,477 psi | 90% | 2667 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 84% | 35,085 psi | 86% | 2608 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 94% | 34,621 psi | 85% | 2615 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 84% | 34,635 psi | 85% | 2621 fps | 97.6% |
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% | 32,924 psi | 81% | 2612 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 33,852 psi | 83% | 2625 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 27,731 psi | 68% | 2474 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 80% | 33,997 psi | 84% | 2641 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,547 psi | 83% | 2625 fps | 95.4% |
| Hodgdon TrailBoss | 12.2 gr | 80% | 25,106 psi | 62% | 1608 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 29,994 psi | 74% | 2556 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 31,662 psi | 78% | 2572 fps | 96% |
| Norma 202 | <<locked>> | 80% | 33,025 psi | 81% | 2579 fps | 97.3% |
| ReloadSwiss RS 14 | 12.4 gr | 80% | 25,106 psi | 62% | 1644 fps | 100% |
| ReloadSwiss RS 60 | 41.8 gr | 88% | 33,547 psi | 83% | 2680 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,662 psi | 78% | 2572 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,369 psi | 70% | 2395 fps | 96.7% |
| Somchem S335 | <<locked>> | 80% | 34,418 psi | 85% | 2546 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 32,648 psi | 80% | 2503 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 29,950 psi | 74% | 2513 fps | 98.8% |
| Vihtavuori N140 | <<locked>> | 80% | 30,821 psi | 76% | 2507 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 92% | 32,663 psi | 80% | 2566 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 30,487 psi | 75% | 2516 fps | 96.2% |
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 51 powders for 7 x 72 R loaded with the .284 | 120gr | Prvi Partizan HP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,801 fps to 2,740 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 51 of the 51 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 1:13.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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 | Prvi Partizan HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2206H, ADI AR 2208 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.