Load Specifications
Load data in caliber 7 x 72 R with .284 | 139gr | Hornady GMX bullet and 27 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% | 35,766 psi | 88% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 35,998 psi | 89% | 2490 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,940 psi | 89% | 2480 fps | 96.5% |
| Bofors RP3 | <<locked>> | 88% | 35,099 psi | 86% | 2477 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,042 psi | 89% | 2490 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 36,564 psi | 90% | 2474 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,867 psi | 86% | 2487 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,069 psi | 84% | 1640 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 34,969 psi | 86% | 2480 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 84% | 36,579 psi | 90% | 2493 fps | 98.6% |
| Lovex S062 | <<locked>> | 86% | 36,158 psi | 89% | 2454 fps | 97% |
| Norma 201 | <<locked>> | 82% | 35,592 psi | 88% | 2425 fps | 96.8% |
| Norma 202 | <<locked>> | 82% | 35,389 psi | 87% | 2438 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,968 psi | 84% | 1677 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,056 psi | 89% | 2562 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 35,897 psi | 88% | 2425 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 90% | 35,012 psi | 86% | 2467 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 84% | 36,579 psi | 90% | 2493 fps | 98.6% |
| Shooters World Precision | <<locked>> | 86% | 36,158 psi | 89% | 2454 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 34,621 psi | 85% | 2359 fps | 99.3% |
| Somchem S355 | <<locked>> | 90% | 36,419 psi | 90% | 2480 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,839 psi | 88% | 2556 fps | 97.2% |
| Vihtavuori N135 | <<locked>> | 84% | 34,432 psi | 85% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 35,984 psi | 89% | 2431 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 90% | 34,737 psi | 86% | 2425 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 86% | 36,579 psi | 90% | 2461 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,216 psi | 89% | 2480 fps | 96.2% |
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% | 28,993 psi | 71% | 2313 fps | 99.4% |
| Accurate 4064 | 32.6 gr | 80% | 27,514 psi | 68% | 2290 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 33,736 psi | 83% | 2434 fps | 95.8% |
| Bofors RP3 | <<locked>> | 86% | 32,909 psi | 81% | 2428 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,576 psi | 83% | 2434 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 80% | 34,316 psi | 85% | 2425 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,532 psi | 80% | 2428 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,918 psi | 61% | 1460 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 32,721 psi | 81% | 2431 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 31,850 psi | 78% | 2388 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 31,879 psi | 79% | 2356 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 33,141 psi | 82% | 2369 fps | 96% |
| Norma 202 | <<locked>> | 80% | 33,170 psi | 82% | 2388 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,237 psi | 62% | 1499 fps | 100% |
| ReloadSwiss RS 60 | 36.7 gr | 84% | 29,414 psi | 72% | 2382 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 31,676 psi | 78% | 2326 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 88% | 32,793 psi | 81% | 2418 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,850 psi | 78% | 2388 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 31,879 psi | 79% | 2356 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,703 psi | 71% | 2224 fps | 97.9% |
| Somchem S355 | <<locked>> | 88% | 34,200 psi | 84% | 2431 fps | 95.4% |
| Somchem S365 | <<locked>> | 96% | 31,444 psi | 77% | 2444 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 30,356 psi | 75% | 2333 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 31,386 psi | 77% | 2333 fps | 98.2% |
| Vihtavuori N150 | 35.5 gr | 86% | 30,530 psi | 75% | 2326 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 30,095 psi | 74% | 2313 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,055 psi | 84% | 2431 fps | 95.4% |
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 55 powders for 7 x 72 R loaded with the .284 | 139gr | Hornady GMX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,562 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 55 of the 55 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 139.0 gr projectile in 0.284" calls for a 1:10.5 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 | 139gr | Hornady GMX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2208, Alliant Power Pro 2000-MR 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.