Load Specifications
Load data in caliber 7 x 72 R with .284 | 130gr | Speer Hot-Cor 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, 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 86% | 36,463 psi | 90% | 2595 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,868 psi | 88% | 2579 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 35,302 psi | 87% | 2579 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,243 psi | 84% | 1732 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 36,564 psi | 90% | 2618 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 82% | 36,666 psi | 90% | 2592 fps | 98.4% |
| Lovex S062 | <<locked>> | 84% | 36,071 psi | 89% | 2549 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 85% | 1775 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,708 psi | 88% | 2654 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 35,810 psi | 88% | 2520 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,666 psi | 90% | 2592 fps | 98.4% |
| Shooters World Precision | <<locked>> | 84% | 36,071 psi | 89% | 2549 fps | 96.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 36,521 psi | 90% | 2497 fps | 99.5% |
| Somchem S355 | <<locked>> | 88% | 36,521 psi | 90% | 2582 fps | 95.9% |
| Somchem S365 | <<locked>> | 98% | 35,766 psi | 88% | 2654 fps | 97% |
| Vihtavuori N135 | <<locked>> | 82% | 34,432 psi | 85% | 2520 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 82% | 35,070 psi | 86% | 2513 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 92% | 34,983 psi | 86% | 2530 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 82% | 34,650 psi | 85% | 2526 fps | 98.4% |
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 4064 | <<locked>> | 80% | 29,950 psi | 74% | 2441 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,591 psi | 83% | 2526 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 32,822 psi | 81% | 2520 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 63% | 1549 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 32,097 psi | 79% | 2513 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 34,055 psi | 84% | 2533 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 31,734 psi | 78% | 2444 fps | 95.1% |
| ReloadSwiss RS 14 | 12.4 gr | 80% | 25,570 psi | 63% | 1585 fps | 100% |
| ReloadSwiss RS 60 | 39.8 gr | 84% | 31,357 psi | 77% | 2536 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,605 psi | 83% | 2467 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,055 psi | 84% | 2533 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 31,734 psi | 78% | 2444 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,414 psi | 75% | 2359 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 34,258 psi | 84% | 2530 fps | 95.1% |
| Somchem S365 | <<locked>> | 94% | 31,546 psi | 78% | 2543 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 32,387 psi | 80% | 2474 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,866 psi | 81% | 2461 fps | 98.4% |
| Vihtavuori N150 | 37.5 gr | 88% | 30,922 psi | 76% | 2431 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 32,532 psi | 80% | 2477 fps | 97.8% |
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 47 powders for 7 x 72 R loaded with the .284 | 130gr | Speer Hot-Cor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,654 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,654 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 75–90 %, 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. Alliant Reloder-23, Hodgdon TrailBoss, IMR 4831 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 | Speer Hot-Cor 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.