Load Specifications
Load data in caliber 7 x 72 R with .284 | 160gr | Sierra Tipped MatchKing bullet and 25 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% | 36,593 psi | 90% | 2280 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 36,550 psi | 90% | 2306 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 36,680 psi | 90% | 2379 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,839 psi | 88% | 2297 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,506 psi | 90% | 2306 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,375 psi | 87% | 2362 fps | 97.1% |
| Bofors RP3 | <<locked>> | 84% | 35,404 psi | 87% | 2303 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,780 psi | 86% | 2293 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,593 psi | 90% | 2346 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,751 psi | 86% | 1519 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,376 psi | 90% | 2260 fps | 96.5% |
| Lovex S062 | <<locked>> | 82% | 36,100 psi | 89% | 2270 fps | 98.3% |
| Norma 203B | <<locked>> | 82% | 35,839 psi | 88% | 2300 fps | 97% |
| Ramshot Big Game | <<locked>> | 82% | 35,143 psi | 87% | 2303 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,201 psi | 87% | 1558 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,447 psi | 87% | 2375 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 86% | 35,331 psi | 87% | 2293 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 36,100 psi | 89% | 2270 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,666 psi | 90% | 2343 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,332 psi | 89% | 2211 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 36,390 psi | 90% | 2300 fps | 97.6% |
| Somchem S365 | <<locked>> | 96% | 35,766 psi | 88% | 2382 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 34,722 psi | 86% | 2244 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 82% | 36,347 psi | 90% | 2274 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,650 psi | 88% | 2274 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% | 34,272 psi | 84% | 2238 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,430 psi | 80% | 2224 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 34,490 psi | 85% | 2326 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,473 psi | 78% | 2201 fps | 96.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,272 psi | 84% | 2260 fps | 95.8% |
| Alliant Reloder-17 | 35.5 gr | 84% | 31,082 psi | 77% | 2257 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 30,821 psi | 76% | 2201 fps | 96.4% |
| Hodgdon Hybrid 100V | 35.1 gr | 90% | 30,676 psi | 76% | 2198 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,374 psi | 85% | 2297 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 64% | 1355 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,127 psi | 84% | 2215 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 33,866 psi | 83% | 2224 fps | 97.7% |
| Norma 203B | <<locked>> | 80% | 33,663 psi | 83% | 2251 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 33,025 psi | 81% | 2254 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 64% | 1388 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,080 psi | 72% | 2215 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 80% | 29,037 psi | 72% | 2152 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 33,866 psi | 83% | 2224 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,430 psi | 80% | 2247 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,155 psi | 79% | 2133 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 30,298 psi | 75% | 2165 fps | 95.5% |
| Somchem S365 | 35.3 gr | 88% | 27,934 psi | 69% | 2188 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 28,572 psi | 70% | 2110 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 34,171 psi | 84% | 2231 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,227 psi | 77% | 2175 fps | 95.5% |
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 25 powders for 7 x 72 R loaded with the .284 | 160gr | Sierra Tipped MatchKing. Somchem S365 delivers the highest muzzle velocity at 2,382 fps; across all powders the maximum-charge window runs from 1,519 fps to 2,382 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 86–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:10.0 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 | 160gr | Sierra Tipped MatchKing 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.