Load Specifications
Load data in caliber 7 x 72 R with .283 | 160gr | Rhino Penetrator bullet and 30 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Alliant Reloder-17 and Winchester 6.5 StaBALL.
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% | 35,694 psi | 88% | 2257 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 35,998 psi | 89% | 2290 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 84% | 36,216 psi | 89% | 2257 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,360 psi | 87% | 2280 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,737 psi | 88% | 2283 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,824 psi | 86% | 2339 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 34,650 psi | 85% | 2280 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,129 psi | 89% | 2313 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 36,158 psi | 89% | 2329 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 86% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,143 psi | 89% | 2264 fps | 97.3% |
| IMR 3031 | <<locked>> | 82% | 35,940 psi | 89% | 2300 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 35,607 psi | 88% | 2238 fps | 96.1% |
| IMR 4895 | <<locked>> | 82% | 36,550 psi | 90% | 2313 fps | 97.1% |
| Lovex S062 | <<locked>> | 82% | 35,302 psi | 87% | 2247 fps | 98% |
| Norma 203B | <<locked>> | 82% | 35,070 psi | 86% | 2274 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 82% | 34,505 psi | 85% | 2280 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 86% | 1545 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 34,882 psi | 86% | 2356 fps | 99% |
| Rottweil R 903 | <<locked>> | 86% | 34,592 psi | 85% | 2270 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 35,302 psi | 87% | 2247 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,013 psi | 89% | 2320 fps | 96.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 35,824 psi | 88% | 2198 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 35,926 psi | 88% | 2283 fps | 97.3% |
| Somchem S365 | <<locked>> | 96% | 35,215 psi | 87% | 2362 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 36,347 psi | 90% | 2260 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,724 psi | 90% | 2257 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 92% | 36,506 psi | 90% | 2277 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 36,347 psi | 90% | 2274 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,954 psi | 86% | 2251 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 2495 | <<locked>> | 80% | 33,402 psi | 82% | 2215 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 31,589 psi | 78% | 2198 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 82% | 34,229 psi | 84% | 2215 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,995 psi | 76% | 2185 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,533 psi | 83% | 2238 fps | 95.4% |
| Alliant Reloder-17 | 35.8 gr | 86% | 32,706 psi | 81% | 2290 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 30,342 psi | 75% | 2185 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,097 psi | 79% | 2224 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,894 psi | 79% | 2234 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,744 psi | 63% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,866 psi | 83% | 2215 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 33,808 psi | 83% | 2257 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,359 psi | 82% | 2192 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,243 psi | 84% | 2264 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 33,388 psi | 82% | 2205 fps | 97.4% |
| Norma 203B | <<locked>> | 80% | 32,909 psi | 81% | 2228 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 32,430 psi | 80% | 2234 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 64% | 1381 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,761 psi | 71% | 2195 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 80% | 28,543 psi | 70% | 2133 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 33,388 psi | 82% | 2205 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,792 psi | 78% | 2224 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,676 psi | 78% | 2113 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 29,588 psi | 73% | 2142 fps | 95.1% |
| Somchem S365 | 34.7 gr | 88% | 27,441 psi | 68% | 2165 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 33,968 psi | 84% | 2215 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,418 psi | 85% | 2211 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 26,919 psi | 66% | 2064 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,113 psi | 84% | 2228 fps | 99.3% |
| Winchester 6.5 StaBALL | 36.7 gr | 86% | 30,763 psi | 76% | 2156 fps | 95.1% |
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 56 powders for 7 x 72 R loaded with the .283 | 160gr | Rhino Penetrator. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,372 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,372 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 56 of the 56 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.283" calls for a 1:9.5 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, Alliant Reloder-17, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .283 | 160gr | Rhino Penetrator they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-16, Alliant Reloder-26, Hodgdon H380 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.