Load Specifications
Load data in caliber 7 x 72 R with .284 | 145gr | Barnes LRX BT bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 and Vihtavuori N150.
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>> | 86% | 36,492 psi | 90% | 2418 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 34,403 psi | 85% | 2402 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,651 psi | 90% | 2441 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,593 psi | 90% | 2507 fps | 96.2% |
| Bofors RP3 | <<locked>> | 88% | 35,868 psi | 88% | 2441 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,433 psi | 87% | 2425 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,476 psi | 87% | 2448 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,924 psi | 84% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,245 psi | 89% | 2395 fps | 96.4% |
| IMR 3031 | <<locked>> | 82% | 35,839 psi | 88% | 2441 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 35,911 psi | 88% | 2434 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 34,969 psi | 86% | 2402 fps | 98.6% |
| Lovex S062 | <<locked>> | 84% | 34,751 psi | 86% | 2369 fps | 97% |
| Norma 201 | <<locked>> | 82% | 36,042 psi | 89% | 2379 fps | 97.3% |
| Norma 202 | <<locked>> | 82% | 36,201 psi | 89% | 2402 fps | 99.2% |
| Norma 203B | <<locked>> | 86% | 36,695 psi | 90% | 2441 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,200 psi | 84% | 1637 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 34,345 psi | 85% | 2467 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 36,695 psi | 90% | 2385 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 90% | 36,056 psi | 89% | 2434 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 34,969 psi | 86% | 2402 fps | 98.6% |
| Shooters World Precision | <<locked>> | 84% | 34,751 psi | 86% | 2369 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,389 psi | 87% | 2320 fps | 99.6% |
| Somchem S341 | <<locked>> | 82% | 36,521 psi | 90% | 2405 fps | 95.8% |
| Somchem S355 | <<locked>> | 88% | 35,099 psi | 86% | 2398 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,448 psi | 90% | 2516 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 84% | 35,273 psi | 87% | 2379 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 36,535 psi | 90% | 2385 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 90% | 35,737 psi | 88% | 2388 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 34,983 psi | 86% | 2372 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,679 psi | 85% | 2392 fps | 96.1% |
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% | 29,747 psi | 73% | 2277 fps | 99.7% |
| Accurate 4064 | 32.1 gr | 80% | 28,195 psi | 69% | 2254 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,169 psi | 79% | 2343 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,403 psi | 85% | 2454 fps | 95.3% |
| Bofors RP3 | <<locked>> | 84% | 31,415 psi | 77% | 2339 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,286 psi | 82% | 2375 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,067 psi | 77% | 2339 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,251 psi | 62% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,721 psi | 83% | 2339 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 33,475 psi | 82% | 2392 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 33,678 psi | 83% | 2385 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 80% | 32,721 psi | 81% | 2356 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 30,560 psi | 75% | 2270 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 33,823 psi | 83% | 2333 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 33,910 psi | 84% | 2352 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 34,447 psi | 85% | 2392 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 62% | 1463 fps | 100% |
| ReloadSwiss RS 60 | 36.2 gr | 84% | 30,153 psi | 74% | 2356 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,314 psi | 80% | 2290 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 86% | 31,314 psi | 77% | 2329 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,721 psi | 81% | 2356 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 30,560 psi | 75% | 2270 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,254 psi | 72% | 2188 fps | 98.4% |
| Somchem S341 | <<locked>> | 80% | 34,287 psi | 84% | 2356 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 32,648 psi | 80% | 2343 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 30,240 psi | 74% | 2362 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 31,024 psi | 76% | 2293 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 32,097 psi | 79% | 2293 fps | 98.7% |
| Vihtavuori N150 | 34.1 gr | 84% | 29,124 psi | 72% | 2241 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 30,821 psi | 76% | 2280 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,285 psi | 80% | 2336 fps | 95.2% |
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 31 powders for 7 x 72 R loaded with the .284 | 145gr | Barnes LRX BT. Somchem S365 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,516 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 145.0 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, Somchem S365 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. ReloadSwiss RS 60, Accurate 4064, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 145gr | Barnes LRX BT 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.