Load Specifications
Load data in caliber 7 x 72 R with .284 | 160gr | Brenneke TAG bullet and 28 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4064 | <<locked>> | 82% | 34,650 psi | 85% | 2297 fps | 99.8% |
| Accurate 4350 | <<locked>> | 92% | 35,259 psi | 87% | 2369 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 82% | 35,331 psi | 87% | 2274 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,709 psi | 90% | 2339 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,535 psi | 90% | 2385 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,303 psi | 89% | 2415 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,764 psi | 81% | 2333 fps | 96.4% |
| Bofors RP3 | <<locked>> | 84% | 35,781 psi | 88% | 2336 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,462 psi | 87% | 2336 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,418 psi | 87% | 2349 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,838 psi | 86% | 1545 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,534 psi | 85% | 2251 fps | 96.4% |
| IMR 4831 | <<locked>> | 96% | 35,070 psi | 86% | 2346 fps | 95.8% |
| Lovex S062 | <<locked>> | 82% | 36,680 psi | 90% | 2306 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 36,434 psi | 90% | 2336 fps | 97.5% |
| Norma URP | <<locked>> | 92% | 36,230 psi | 89% | 2375 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 82% | 36,042 psi | 89% | 2349 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,896 psi | 86% | 1575 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 36,230 psi | 89% | 2425 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 86% | 36,013 psi | 89% | 2333 fps | 98.1% |
| Shooters World Precision | <<locked>> | 82% | 36,680 psi | 90% | 2306 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,085 psi | 86% | 2336 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,780 psi | 86% | 2208 fps | 99.9% |
| Somchem S355 | <<locked>> | 84% | 34,896 psi | 86% | 2297 fps | 97.5% |
| Somchem S365 | <<locked>> | 96% | 36,651 psi | 90% | 2428 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 35,418 psi | 87% | 2283 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,679 psi | 85% | 2402 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,289 psi | 89% | 2320 fps | 97.9% |
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 4064 | <<locked>> | 80% | 32,489 psi | 80% | 2251 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 32,996 psi | 81% | 2320 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 33,243 psi | 82% | 2228 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,126 psi | 79% | 2241 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,418 psi | 85% | 2339 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 82% | 29,617 psi | 73% | 2247 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,879 psi | 76% | 2287 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 31,227 psi | 77% | 2238 fps | 97% |
| Hodgdon Hybrid 100V | 36 gr | 88% | 29,254 psi | 72% | 2192 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,069 psi | 81% | 2293 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 63% | 1375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,445 psi | 80% | 2205 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 32,938 psi | 81% | 2300 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 34,214 psi | 84% | 2257 fps | 98.1% |
| Norma 203B | <<locked>> | 80% | 34,229 psi | 84% | 2290 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 34,069 psi | 84% | 2329 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 33,663 psi | 83% | 2297 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,831 psi | 64% | 1407 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,559 psi | 73% | 2257 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 80% | 29,414 psi | 72% | 2188 fps | 95.9% |
| Shooters World Precision | <<locked>> | 80% | 34,214 psi | 84% | 2257 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,850 psi | 76% | 2238 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,605 psi | 80% | 2165 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 30,530 psi | 75% | 2198 fps | 96.1% |
| Somchem S365 | 36.2 gr | 86% | 26,571 psi | 65% | 2175 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,008 psi | 71% | 2146 fps | 97% |
| Vihtavuori N555 | <<locked>> | 98% | 32,590 psi | 80% | 2356 fps | 95.6% |
| Winchester 6.5 StaBALL | 38.2 gr | 84% | 29,617 psi | 73% | 2165 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 52 powders for 7 x 72 R loaded with the .284 | 160gr | Brenneke TAG. Alliant Reloder-26 delivers the highest muzzle velocity at 2,457 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,457 fps. Accurate 3100 gives the best case fill at 100 %, and 52 of the 52 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 160.0 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, Alliant Reloder-26 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 | Brenneke TAG 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.