Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Hornady ELD-X bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Rottweil R 903 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>> | 82% | 34,722 psi | 86% | 2329 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 34,925 psi | 86% | 2359 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,608 psi | 90% | 2392 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,245 psi | 89% | 2457 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 36,056 psi | 89% | 2395 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,360 psi | 87% | 2379 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,389 psi | 87% | 2398 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,519 psi | 85% | 1572 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,839 psi | 88% | 2385 fps | 96.3% |
| Lovex S062 | <<locked>> | 84% | 36,709 psi | 90% | 2359 fps | 97.8% |
| Norma 203B | <<locked>> | 84% | 36,637 psi | 90% | 2392 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 84% | 36,042 psi | 89% | 2398 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,896 psi | 86% | 1614 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 36,405 psi | 90% | 2474 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 36,666 psi | 90% | 2336 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 88% | 35,969 psi | 89% | 2385 fps | 97.1% |
| Shooters World Precision | <<locked>> | 84% | 36,709 psi | 90% | 2359 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 35,027 psi | 86% | 2267 fps | 99.7% |
| Somchem S355 | <<locked>> | 86% | 34,896 psi | 86% | 2346 fps | 96.5% |
| Somchem S365 | <<locked>> | 98% | 36,535 psi | 90% | 2474 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 82% | 35,186 psi | 87% | 2326 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 36,332 psi | 89% | 2333 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 88% | 35,418 psi | 87% | 2336 fps | 98% |
| Vihtavuori N540 | <<locked>> | 82% | 34,925 psi | 86% | 2323 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,463 psi | 90% | 2362 fps | 96.7% |
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% | 32,503 psi | 80% | 2283 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 30,777 psi | 76% | 2264 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,240 psi | 74% | 2247 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,098 psi | 84% | 2405 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 29,457 psi | 73% | 2244 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,243 psi | 82% | 2329 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,025 psi | 81% | 2343 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 63% | 1401 fps | 100% |
| IMR 4895 | <<locked>> | 80% | 33,402 psi | 82% | 2329 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 32,387 psi | 80% | 2267 fps | 96.6% |
| Norma 203B | <<locked>> | 82% | 34,418 psi | 85% | 2346 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 82% | 33,707 psi | 83% | 2343 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,657 psi | 63% | 1434 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,992 psi | 69% | 2247 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 34,447 psi | 85% | 2290 fps | 97.1% |
| Rottweil R 903 | 34 gr | 84% | 31,618 psi | 78% | 2290 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 32,387 psi | 80% | 2267 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,038 psi | 76% | 2182 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 32,764 psi | 81% | 2297 fps | 95.7% |
| Somchem S365 | 37.4 gr | 92% | 30,197 psi | 74% | 2316 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 33,214 psi | 82% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,098 psi | 84% | 2290 fps | 99.3% |
| Vihtavuori N150 | 32.4 gr | 80% | 27,427 psi | 68% | 2149 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,576 psi | 80% | 2274 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,256 psi | 79% | 2267 fps | 95% |
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 25 powders for 7 x 72 R loaded with the .284 | 150gr | Hornady ELD-X. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,474 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 85–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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, Rottweil R 903, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 150gr | Hornady ELD-X 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.