Load Specifications
Load data in caliber 7 x 72 R with .284 | 140gr | Barnes Solid bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Vihtavuori N150 and ReloadSwiss RS 14.
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>> | 84% | 34,534 psi | 85% | 2408 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 34,737 psi | 86% | 2438 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,550 psi | 90% | 2470 fps | 96.6% |
| Bofors RP3 | <<locked>> | 88% | 35,940 psi | 89% | 2470 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,709 psi | 90% | 2477 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,404 psi | 87% | 2474 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,185 psi | 84% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,839 psi | 88% | 2418 fps | 95.8% |
| IMR 3031 | <<locked>> | 82% | 35,694 psi | 88% | 2474 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 82% | 34,998 psi | 86% | 2434 fps | 98.2% |
| Lovex S062 | <<locked>> | 84% | 34,577 psi | 85% | 2392 fps | 96.4% |
| Norma 201 | <<locked>> | 82% | 36,230 psi | 89% | 2411 fps | 96.9% |
| Norma 202 | <<locked>> | 82% | 36,172 psi | 89% | 2431 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,505 psi | 85% | 1667 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,477 psi | 90% | 2546 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 84% | 36,579 psi | 90% | 2411 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 90% | 35,810 psi | 88% | 2461 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 34,998 psi | 86% | 2434 fps | 98.2% |
| Shooters World Precision | <<locked>> | 84% | 34,577 psi | 85% | 2392 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,317 psi | 87% | 2349 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,434 psi | 90% | 2543 fps | 97.3% |
| Vihtavuori N135 | <<locked>> | 84% | 35,244 psi | 87% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 36,434 psi | 90% | 2418 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 90% | 35,404 psi | 87% | 2415 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 34,983 psi | 86% | 2402 fps | 98.6% |
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% | 30,269 psi | 75% | 2316 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 28,645 psi | 71% | 2293 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,184 psi | 79% | 2372 fps | 95.1% |
| Bofors RP3 | <<locked>> | 86% | 33,663 psi | 83% | 2421 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,490 psi | 85% | 2431 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,098 psi | 82% | 2418 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,222 psi | 62% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,678 psi | 83% | 2369 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 33,431 psi | 82% | 2425 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 32,561 psi | 80% | 2379 fps | 97.5% |
| Lovex S062 | <<locked>> | 82% | 32,474 psi | 80% | 2343 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 34,055 psi | 84% | 2362 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 33,982 psi | 84% | 2382 fps | 98.5% |
| ReloadSwiss RS 14 | 11.2 gr | 80% | 25,309 psi | 62% | 1483 fps | 100% |
| ReloadSwiss RS 60 | 36 gr | 84% | 30,052 psi | 74% | 2375 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 32,561 psi | 80% | 2323 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 33,547 psi | 83% | 2411 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,561 psi | 80% | 2379 fps | 97.5% |
| Shooters World Precision | <<locked>> | 82% | 32,474 psi | 80% | 2343 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,327 psi | 72% | 2218 fps | 98.1% |
| Somchem S365 | <<locked>> | 96% | 32,227 psi | 79% | 2441 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 31,096 psi | 77% | 2323 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,126 psi | 79% | 2323 fps | 98.3% |
| Vihtavuori N150 | 34.8 gr | 86% | 31,154 psi | 77% | 2316 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 30,690 psi | 76% | 2306 fps | 97.4% |
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 53 powders for 7 x 72 R loaded with the .284 | 140gr | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,546 fps. Hodgdon TrailBoss 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 74–90 %, leaving at least 10 % headroom. The 140.0 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, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 140gr | Barnes Solid 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.