Load Specifications
Load data in caliber 7 x 72 R with .284 | 170gr | Rhino Solid Shank bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and Hodgdon Hybrid 100V.
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 4350 | <<locked>> | 90% | 35,085 psi | 86% | 2277 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,172 psi | 89% | 2238 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,129 psi | 89% | 2290 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,505 psi | 87% | 2310 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,432 psi | 85% | 2290 fps | 97.6% |
| Bofors RP3 | <<locked>> | 82% | 35,534 psi | 88% | 2241 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 36,709 psi | 90% | 2244 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,925 psi | 86% | 2241 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 87% | 1483 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,172 psi | 89% | 2198 fps | 97.3% |
| IMR 4831 | <<locked>> | 94% | 34,751 psi | 86% | 2251 fps | 96.2% |
| Norma URP | <<locked>> | 90% | 35,737 psi | 88% | 2277 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 88% | 1522 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 35,636 psi | 88% | 2323 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 35,752 psi | 88% | 2238 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,447 psi | 85% | 2234 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 36,390 psi | 90% | 2149 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 36,680 psi | 90% | 2241 fps | 98.4% |
| Somchem S365 | <<locked>> | 94% | 36,376 psi | 90% | 2333 fps | 99.4% |
| Unknown powder | <<locked>> | 88% | 36,738 psi | 90% | 2283 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 88% | 35,491 psi | 87% | 2201 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 98% | 34,519 psi | 85% | 2310 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,404 psi | 87% | 2218 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,821 psi | 76% | 2274 fps | 96.7% |
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 4350 | <<locked>> | 88% | 32,779 psi | 81% | 2228 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,939 psi | 84% | 2192 fps | 98.1% |
| Alliant Reloder-16 | 35.1 gr | 88% | 33,997 psi | 84% | 2244 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,211 psi | 72% | 2156 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 28,834 psi | 71% | 2149 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 33,330 psi | 82% | 2195 fps | 98% |
| Hodgdon H380 | <<locked>> | 80% | 34,214 psi | 84% | 2192 fps | 95.2% |
| Hodgdon Hybrid 100V | 34 gr | 86% | 29,022 psi | 71% | 2103 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 64% | 1319 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,953 psi | 84% | 2152 fps | 96.6% |
| IMR 4831 | <<locked>> | 92% | 32,648 psi | 80% | 2205 fps | 95.5% |
| Norma URP | <<locked>> | 88% | 33,605 psi | 83% | 2231 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 65% | 1352 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,082 psi | 77% | 2215 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,430 psi | 77% | 2146 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,387 psi | 80% | 2188 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,374 psi | 85% | 2113 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,343 psi | 80% | 2152 fps | 97.2% |
| Somchem S365 | 33.4 gr | 82% | 24,990 psi | 62% | 2047 fps | 95.2% |
| Unknown powder | <<locked>> | 86% | 34,563 psi | 85% | 2238 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 27,644 psi | 68% | 2028 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 94% | 30,472 psi | 75% | 2218 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,298 psi | 72% | 2077 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 28,863 psi | 71% | 2211 fps | 95.3% |
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 49 powders for 7 x 72 R loaded with the .284 | 170gr | Rhino Solid Shank. Alliant Reloder-26 delivers the highest muzzle velocity at 2,359 fps; across all powders the maximum-charge window runs from 1,483 fps to 2,359 fps. Accurate 3100 gives the best case fill at 100 %, and 49 of the 49 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 170.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-16, Somchem S365, Hodgdon Hybrid 100V rank at the top here: for 7 x 72 R with the .284 | 170gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Bofors RP7 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.