Load Specifications
Load data in caliber 7 x 72 R with .284 | 140gr | Woodleigh PP SN bullet and 22 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>> | 84% | 35,998 psi | 89% | 2487 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,302 psi | 87% | 2470 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 34,577 psi | 85% | 2467 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,230 psi | 89% | 2507 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,056 psi | 89% | 2520 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 85% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,926 psi | 88% | 2451 fps | 96.4% |
| IMR 3031 | <<locked>> | 82% | 35,723 psi | 88% | 2497 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 36,550 psi | 90% | 2510 fps | 96.2% |
| Lovex S062 | <<locked>> | 82% | 35,317 psi | 87% | 2438 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,867 psi | 86% | 1703 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 34,795 psi | 86% | 2543 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 86% | 34,476 psi | 85% | 2461 fps | 96.3% |
| Shooters World Precision | <<locked>> | 82% | 35,317 psi | 87% | 2438 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 35,636 psi | 88% | 2385 fps | 99.7% |
| Somchem S355 | <<locked>> | 86% | 35,723 psi | 88% | 2470 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 35,041 psi | 86% | 2546 fps | 97.6% |
| Vihtavuori N135 | <<locked>> | 82% | 36,071 psi | 89% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,680 psi | 90% | 2451 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 92% | 36,564 psi | 90% | 2470 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 36,274 psi | 89% | 2467 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,114 psi | 86% | 2438 fps | 95.9% |
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% | 31,531 psi | 78% | 2385 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,864 psi | 76% | 2365 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 30,211 psi | 74% | 2362 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,982 psi | 84% | 2454 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,794 psi | 83% | 2467 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,585 psi | 63% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,649 psi | 83% | 2398 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 33,533 psi | 83% | 2451 fps | 99.8% |
| IMR 4895 | <<locked>> | 80% | 34,229 psi | 84% | 2454 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 33,083 psi | 81% | 2385 fps | 96.5% |
| ReloadSwiss RS 14 | 12.2 gr | 80% | 25,976 psi | 64% | 1526 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,601 psi | 70% | 2369 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 84% | 32,489 psi | 80% | 2411 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 33,083 psi | 81% | 2385 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,618 psi | 78% | 2297 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 33,707 psi | 83% | 2425 fps | 95.7% |
| Somchem S365 | 40.5 gr | 92% | 31,038 psi | 76% | 2444 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 33,881 psi | 83% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,330 psi | 85% | 2402 fps | 99.2% |
| Vihtavuori N150 | 35.1 gr | 84% | 28,587 psi | 70% | 2283 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,982 psi | 84% | 2418 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,837 psi | 81% | 2382 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 44 powders for 7 x 72 R loaded with the .284 | 140gr | Woodleigh PP SN. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,562 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 78–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:13.0 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 | 140gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Power Pro 2000-MR, Alliant Reloder-16 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.