Load Specifications
Load data in caliber 7 x 72 R with .284 | 165gr | Sierra Tipped GameKing bullet and 27 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 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 2495 | <<locked>> | 82% | 36,260 psi | 89% | 2224 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 36,289 psi | 89% | 2254 fps | 99.9% |
| Accurate 4350 | <<locked>> | 94% | 36,419 psi | 90% | 2320 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 36,709 psi | 90% | 2228 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,607 psi | 88% | 2244 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,260 psi | 89% | 2254 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,186 psi | 87% | 2310 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 34,925 psi | 86% | 2244 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,579 psi | 90% | 2283 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,492 psi | 90% | 2293 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,577 psi | 85% | 1476 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,042 psi | 89% | 2208 fps | 96.6% |
| Lovex S062 | <<locked>> | 82% | 35,781 psi | 88% | 2215 fps | 98.3% |
| Norma 203B | <<locked>> | 82% | 35,621 psi | 88% | 2244 fps | 97% |
| Ramshot Big Game | <<locked>> | 82% | 34,809 psi | 86% | 2247 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 86% | 1516 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,244 psi | 87% | 2323 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 86% | 35,143 psi | 87% | 2244 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 35,781 psi | 88% | 2215 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,390 psi | 90% | 2287 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,274 psi | 89% | 2165 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 36,201 psi | 89% | 2247 fps | 97.7% |
| Somchem S365 | <<locked>> | 96% | 35,404 psi | 87% | 2326 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 36,521 psi | 90% | 2218 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 36,622 psi | 90% | 2234 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 36,143 psi | 89% | 2221 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,128 psi | 87% | 2218 fps | 97.2% |
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% | 33,823 psi | 83% | 2182 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,024 psi | 79% | 2169 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 34,258 psi | 84% | 2274 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 32,474 psi | 80% | 2139 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,415 psi | 77% | 2156 fps | 96.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,939 psi | 84% | 2205 fps | 95.8% |
| Alliant Reloder-17 | 34.3 gr | 84% | 30,806 psi | 76% | 2205 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 30,530 psi | 75% | 2149 fps | 96.5% |
| Hodgdon Hybrid 100V | 33.9 gr | 90% | 30,385 psi | 75% | 2146 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,214 psi | 84% | 2247 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,744 psi | 63% | 1319 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,026 psi | 84% | 2165 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 33,489 psi | 82% | 2169 fps | 97.7% |
| Norma 203B | <<locked>> | 80% | 33,344 psi | 82% | 2198 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 32,663 psi | 80% | 2201 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,962 psi | 64% | 1352 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,935 psi | 71% | 2165 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 80% | 28,689 psi | 71% | 2100 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 33,489 psi | 82% | 2169 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,053 psi | 79% | 2192 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,981 psi | 79% | 2083 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 29,965 psi | 74% | 2113 fps | 95.6% |
| Somchem S365 | 34.1 gr | 88% | 27,702 psi | 68% | 2136 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 34,374 psi | 85% | 2182 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 28,282 psi | 70% | 2057 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 33,910 psi | 84% | 2178 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,125 psi | 77% | 2126 fps | 95.6% |
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 27 powders for 7 x 72 R loaded with the .284 | 165gr | Sierra Tipped GameKing. Somchem S365 delivers the highest muzzle velocity at 2,326 fps; across all powders the maximum-charge window runs from 1,476 fps to 2,326 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 27 of the 27 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 85–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. 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, Alliant Reloder-17, Hodgdon Hybrid 100V rank at the top here: for 7 x 72 R with the .284 | 165gr | Sierra Tipped GameKing they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.