Load Specifications
Load data in caliber 7 x 72 R with .284 | 140gr | Remington PSP 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 4064 | <<locked>> | 82% | 35,099 psi | 86% | 2480 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,564 psi | 90% | 2513 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,289 psi | 89% | 2585 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 36,129 psi | 89% | 2516 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,360 psi | 87% | 2503 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 86% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 36,651 psi | 90% | 2467 fps | 95.9% |
| Lovex S062 | <<locked>> | 82% | 36,651 psi | 90% | 2480 fps | 97.8% |
| Norma 203B | <<locked>> | 82% | 36,390 psi | 90% | 2510 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 82% | 35,969 psi | 89% | 2520 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 87% | 1726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 36,158 psi | 89% | 2595 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 86% | 35,984 psi | 89% | 2507 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 36,651 psi | 90% | 2480 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,838 psi | 86% | 2382 fps | 99.7% |
| Somchem S355 | <<locked>> | 84% | 34,911 psi | 86% | 2464 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 36,651 psi | 90% | 2602 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 90% | 35,868 psi | 88% | 2467 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,419 psi | 90% | 2487 fps | 96.8% |
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% | 32,909 psi | 81% | 2428 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,169 psi | 79% | 2408 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,910 psi | 84% | 2523 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 31,473 psi | 78% | 2405 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,460 psi | 82% | 2457 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 64% | 1506 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,621 psi | 85% | 2421 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 34,403 psi | 85% | 2431 fps | 97.2% |
| Norma 203B | <<locked>> | 80% | 34,142 psi | 84% | 2457 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,576 psi | 83% | 2464 fps | 95% |
| ReloadSwiss RS 14 | 12.6 gr | 80% | 26,005 psi | 64% | 1539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,718 psi | 73% | 2418 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 82% | 31,633 psi | 78% | 2402 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 34,403 psi | 85% | 2431 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,648 psi | 80% | 2333 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 32,750 psi | 81% | 2415 fps | 95.7% |
| Somchem S365 | 40.2 gr | 88% | 28,601 psi | 70% | 2388 fps | 95.1% |
| Vihtavuori N150 | 35.5 gr | 82% | 27,891 psi | 69% | 2274 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,966 psi | 79% | 2379 fps | 95% |
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 41 powders for 7 x 72 R loaded with the .284 | 140gr | Remington PSP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,618 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,618 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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 | 140gr | Remington PSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Reloder-16, Alliant Reloder-26 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.