Load Specifications
Load data in caliber 7 x 72 R with .283 | 140gr | Rhino Penetrator bullet and 25 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 2495 | <<locked>> | 84% | 35,723 psi | 88% | 2441 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 35,839 psi | 88% | 2467 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,288 psi | 87% | 2454 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 34,650 psi | 85% | 2454 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,361 psi | 90% | 2484 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 36,535 psi | 90% | 2510 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 84% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,289 psi | 89% | 2438 fps | 96.1% |
| IMR 3031 | <<locked>> | 84% | 36,042 psi | 89% | 2487 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 82% | 36,071 psi | 89% | 2464 fps | 98.6% |
| Lovex S062 | <<locked>> | 84% | 35,563 psi | 88% | 2425 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,432 psi | 85% | 1673 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,273 psi | 87% | 2530 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 35,404 psi | 87% | 2398 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 88% | 34,838 psi | 86% | 2448 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,071 psi | 89% | 2464 fps | 98.6% |
| Shooters World Precision | <<locked>> | 84% | 35,563 psi | 88% | 2425 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,998 psi | 89% | 2372 fps | 99.6% |
| Somchem S355 | <<locked>> | 88% | 35,810 psi | 88% | 2454 fps | 96.1% |
| Somchem S365 | <<locked>> | 98% | 35,143 psi | 87% | 2526 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 82% | 36,535 psi | 90% | 2375 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 36,419 psi | 90% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 34,766 psi | 86% | 2395 fps | 99% |
| Vihtavuori N150 | <<locked>> | 94% | 36,579 psi | 90% | 2451 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 36,709 psi | 90% | 2457 fps | 99.1% |
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% | 31,401 psi | 77% | 2349 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 29,747 psi | 73% | 2326 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 33,185 psi | 82% | 2405 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 32,503 psi | 80% | 2405 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,258 psi | 84% | 2434 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,227 psi | 79% | 2408 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,353 psi | 62% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,113 psi | 84% | 2388 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,633 psi | 78% | 2388 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 33,605 psi | 83% | 2411 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 31,502 psi | 78% | 2329 fps | 95.5% |
| ReloadSwiss RS 14 | 11.5 gr | 80% | 25,469 psi | 63% | 1493 fps | 100% |
| ReloadSwiss RS 60 | 36.1 gr | 82% | 29,008 psi | 71% | 2356 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 33,344 psi | 82% | 2349 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 86% | 32,430 psi | 80% | 2395 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,605 psi | 83% | 2411 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 31,502 psi | 78% | 2329 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,066 psi | 74% | 2244 fps | 98.4% |
| Somchem S355 | <<locked>> | 86% | 33,721 psi | 83% | 2405 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 31,227 psi | 77% | 2425 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 34,301 psi | 84% | 2329 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,981 psi | 79% | 2352 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 32,416 psi | 80% | 2343 fps | 98.5% |
| Vihtavuori N150 | 34.1 gr | 86% | 28,732 psi | 71% | 2267 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 32,271 psi | 79% | 2359 fps | 98.1% |
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 50 powders for 7 x 72 R loaded with the .283 | 140gr | Rhino Penetrator. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,536 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,536 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.283" calls for a 1:10.5 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 .283 | 140gr | Rhino Penetrator 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.