Load Specifications
Load data in caliber 7 x 72 R with .284 | 160gr | Barnes TSX FB bullet and 30 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% | 34,360 psi | 85% | 2247 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 34,780 psi | 86% | 2280 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 84% | 35,549 psi | 88% | 2254 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,637 psi | 90% | 2316 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,940 psi | 86% | 2280 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,492 psi | 90% | 2392 fps | 97.4% |
| Bofors RP3 | <<locked>> | 86% | 35,998 psi | 89% | 2320 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,563 psi | 88% | 2313 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,433 psi | 87% | 2326 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,476 psi | 85% | 1516 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,925 psi | 86% | 2238 fps | 96% |
| IMR 4895 | <<locked>> | 82% | 35,737 psi | 88% | 2310 fps | 97% |
| Lovex S062 | <<locked>> | 82% | 34,476 psi | 85% | 2241 fps | 97.8% |
| Norma 203B | <<locked>> | 84% | 36,593 psi | 90% | 2316 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 84% | 36,230 psi | 89% | 2329 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,505 psi | 85% | 1549 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,172 psi | 89% | 2365 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 36,332 psi | 89% | 2398 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 82% | 36,303 psi | 89% | 2257 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 88% | 35,940 psi | 89% | 2313 fps | 97.7% |
| Shooters World Precision | <<locked>> | 82% | 34,476 psi | 85% | 2241 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,259 psi | 87% | 2316 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 35,215 psi | 87% | 2195 fps | 99.9% |
| Somchem S355 | <<locked>> | 86% | 35,027 psi | 86% | 2277 fps | 97.2% |
| Somchem S365 | <<locked>> | 98% | 36,608 psi | 90% | 2402 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 35,259 psi | 87% | 2251 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,230 psi | 89% | 2257 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 88% | 35,447 psi | 87% | 2264 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 34,824 psi | 86% | 2247 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,550 psi | 90% | 2297 fps | 97.4% |
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% | 32,053 psi | 79% | 2201 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 30,400 psi | 75% | 2188 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 82% | 33,330 psi | 82% | 2208 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,197 psi | 74% | 2178 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 32,735 psi | 81% | 2231 fps | 95.2% |
| Alliant Reloder-17 | 36.1 gr | 86% | 31,937 psi | 79% | 2283 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 29,356 psi | 72% | 2172 fps | 95.8% |
| Hodgdon Hybrid 100V | 35.6 gr | 92% | 31,285 psi | 77% | 2218 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,967 psi | 81% | 2270 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 63% | 1352 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 32,938 psi | 81% | 2192 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 33,460 psi | 82% | 2260 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 32,271 psi | 79% | 2195 fps | 97.2% |
| Norma 203B | <<locked>> | 80% | 32,097 psi | 79% | 2221 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 31,647 psi | 78% | 2228 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,643 psi | 63% | 1385 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 33,562 psi | 83% | 2310 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,007 psi | 69% | 2188 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,272 psi | 84% | 2215 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 29,298 psi | 72% | 2165 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 32,271 psi | 79% | 2195 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 33,083 psi | 81% | 2267 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,995 psi | 76% | 2113 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 30,719 psi | 76% | 2182 fps | 95.7% |
| Somchem S365 | 35.8 gr | 90% | 28,311 psi | 70% | 2201 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 33,156 psi | 82% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,200 psi | 84% | 2218 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,340 psi | 67% | 2083 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 32,677 psi | 80% | 2201 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,111 psi | 79% | 2198 fps | 95.8% |
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 53 powders for 7 x 72 R loaded with the .284 | 160gr | Barnes TSX FB. Somchem S365 delivers the highest muzzle velocity at 2,402 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,402 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 53 of the 53 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 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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, Alliant Reloder-17, Hodgdon Hybrid 100V rank at the top here: for 7 x 72 R with the .284 | 160gr | Barnes TSX FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Alliant Reloder-26, Hodgdon H380 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.