Load Specifications
Load data in caliber 7 x 72 R with .284 | 160gr | Speer Deep Curl Soft Point bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Hodgdon Hybrid 100V 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4350 | <<locked>> | 90% | 35,244 psi | 87% | 2365 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,274 psi | 89% | 2326 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,100 psi | 89% | 2379 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,636 psi | 88% | 2398 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,650 psi | 85% | 2379 fps | 97.3% |
| Bofors RP3 | <<locked>> | 82% | 35,549 psi | 88% | 2326 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 35,143 psi | 87% | 2329 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 86% | 1549 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,187 psi | 89% | 2283 fps | 97% |
| IMR 4831 | <<locked>> | 94% | 34,882 psi | 86% | 2339 fps | 95.9% |
| Norma URP | <<locked>> | 90% | 35,955 psi | 89% | 2369 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 87% | 1588 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 35,621 psi | 88% | 2408 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 35,708 psi | 88% | 2323 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,621 psi | 85% | 2323 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 36,390 psi | 90% | 2238 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 36,709 psi | 90% | 2329 fps | 98.1% |
| Somchem S365 | <<locked>> | 94% | 36,303 psi | 89% | 2421 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 88% | 35,462 psi | 87% | 2287 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 98% | 34,563 psi | 85% | 2395 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,534 psi | 88% | 2303 fps | 97.7% |
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% | 32,793 psi | 81% | 2310 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,924 psi | 84% | 2277 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,866 psi | 83% | 2323 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,356 psi | 72% | 2238 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,719 psi | 76% | 2280 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 33,431 psi | 82% | 2280 fps | 97.7% |
| Hodgdon Hybrid 100V | 35.9 gr | 86% | 29,211 psi | 72% | 2188 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 64% | 1381 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,084 psi | 84% | 2238 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 32,880 psi | 81% | 2293 fps | 95.1% |
| Norma URP | <<locked>> | 88% | 33,649 psi | 83% | 2316 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 65% | 1414 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,270 psi | 77% | 2303 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,343 psi | 77% | 2228 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,401 psi | 80% | 2270 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,272 psi | 84% | 2195 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 32,358 psi | 80% | 2234 fps | 96.8% |
| Somchem S365 | 36 gr | 84% | 26,527 psi | 65% | 2172 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,572 psi | 68% | 2106 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 96% | 32,590 psi | 80% | 2349 fps | 95.7% |
| Winchester 6.5 StaBALL | 38 gr | 82% | 29,283 psi | 72% | 2156 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 44 powders for 7 x 72 R loaded with the .284 | 160gr | Speer Deep Curl Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,448 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,448 fps. Accurate 3100 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.5 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. Somchem S365, Hodgdon Hybrid 100V, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .284 | 160gr | Speer Deep Curl Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, 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.