Load Specifications
Load data in caliber 7 x 72 R with .284 | 130gr | Speer Soft Point bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, 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 2495 | <<locked>> | 82% | 34,505 psi | 85% | 2533 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 34,780 psi | 86% | 2562 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,419 psi | 90% | 2595 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 35,839 psi | 88% | 2595 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,331 psi | 87% | 2602 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,316 psi | 85% | 1739 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 34,722 psi | 86% | 2582 fps | 99.7% |
| Lovex S062 | <<locked>> | 84% | 36,608 psi | 90% | 2566 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,592 psi | 85% | 1781 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 36,114 psi | 89% | 2674 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 36,347 psi | 90% | 2536 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 88% | 35,752 psi | 88% | 2585 fps | 96% |
| Shooters World Precision | <<locked>> | 84% | 36,608 psi | 90% | 2566 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 34,737 psi | 86% | 2464 fps | 99.3% |
| Somchem S365 | <<locked>> | 98% | 36,390 psi | 90% | 2674 fps | 97.3% |
| Vihtavuori N135 | <<locked>> | 82% | 35,070 psi | 86% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,042 psi | 89% | 2536 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 88% | 35,215 psi | 87% | 2536 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 82% | 34,621 psi | 85% | 2520 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 2495 | <<locked>> | 80% | 32,256 psi | 79% | 2480 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 30,530 psi | 75% | 2457 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 34,127 psi | 84% | 2543 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 33,547 psi | 83% | 2543 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,982 psi | 81% | 2543 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 63% | 1552 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 32,445 psi | 80% | 2526 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 32,256 psi | 79% | 2461 fps | 95.5% |
| ReloadSwiss RS 14 | 12.6 gr | 80% | 25,744 psi | 63% | 1594 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,863 psi | 74% | 2497 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 34,156 psi | 84% | 2484 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 86% | 33,475 psi | 82% | 2533 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 32,256 psi | 79% | 2461 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,705 psi | 76% | 2372 fps | 98.4% |
| Somchem S365 | 42.8 gr | 94% | 32,169 psi | 79% | 2566 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 32,764 psi | 81% | 2484 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 33,794 psi | 83% | 2487 fps | 98.6% |
| Vihtavuori N150 | 38 gr | 84% | 30,951 psi | 76% | 2431 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 32,532 psi | 80% | 2470 fps | 97.9% |
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 46 powders for 7 x 72 R loaded with the .284 | 130gr | Speer Soft Point. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,674 fps; across all powders the maximum-charge window runs from 1,739 fps to 2,674 fps. Alliant Reloder-23 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 76–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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. Somchem S365, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 130gr | Speer Soft Point 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.