Load Specifications
Load data in caliber 7 x 72 R with .284 | 151gr | Warner Tool Co. Flat Line bullet and 29 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 34,838 psi | 86% | 2306 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 35,186 psi | 87% | 2339 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,766 psi | 86% | 2326 fps | 96.6% |
| Bofors RP3 | <<locked>> | 88% | 36,390 psi | 90% | 2375 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,592 psi | 88% | 2349 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,766 psi | 88% | 2375 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 85% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,405 psi | 90% | 2323 fps | 96.5% |
| IMR 3031 | <<locked>> | 82% | 36,172 psi | 89% | 2369 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 36,013 psi | 89% | 2359 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 35,172 psi | 87% | 2329 fps | 98.6% |
| Lovex S062 | <<locked>> | 84% | 35,114 psi | 86% | 2297 fps | 97.1% |
| Norma 201 | <<locked>> | 82% | 36,695 psi | 90% | 2316 fps | 97.5% |
| Norma 202 | <<locked>> | 82% | 36,390 psi | 90% | 2326 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,432 psi | 85% | 1578 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 34,635 psi | 85% | 2395 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 82% | 34,766 psi | 86% | 2267 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 90% | 36,274 psi | 89% | 2362 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 35,172 psi | 87% | 2329 fps | 98.6% |
| Shooters World Precision | <<locked>> | 84% | 35,114 psi | 86% | 2297 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,853 psi | 88% | 2320 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,520 psi | 87% | 2247 fps | 99.6% |
| Somchem S355 | <<locked>> | 88% | 35,114 psi | 86% | 2323 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,622 psi | 90% | 2441 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 84% | 35,708 psi | 88% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 34,432 psi | 85% | 2270 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 90% | 35,810 psi | 88% | 2316 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 35,215 psi | 87% | 2303 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,911 psi | 86% | 2323 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% | 30,632 psi | 75% | 2218 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 29,008 psi | 71% | 2198 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,429 psi | 75% | 2224 fps | 95% |
| Bofors RP3 | <<locked>> | 84% | 31,749 psi | 78% | 2274 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,678 psi | 83% | 2306 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,502 psi | 78% | 2274 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,237 psi | 62% | 1371 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,084 psi | 84% | 2274 fps | 95.8% |
| IMR 3031 | <<locked>> | 80% | 33,721 psi | 83% | 2320 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 33,982 psi | 84% | 2313 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 32,866 psi | 81% | 2280 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 30,792 psi | 76% | 2201 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 34,374 psi | 85% | 2267 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 34,316 psi | 85% | 2283 fps | 98.9% |
| ReloadSwiss RS 14 | 10.6 gr | 80% | 25,396 psi | 63% | 1404 fps | 100% |
| ReloadSwiss RS 60 | 33.3 gr | 82% | 28,500 psi | 70% | 2231 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 32,808 psi | 81% | 2224 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 31,676 psi | 78% | 2264 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,866 psi | 81% | 2280 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 30,792 psi | 76% | 2201 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,649 psi | 83% | 2274 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,486 psi | 73% | 2119 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 33,170 psi | 82% | 2280 fps | 95.5% |
| Somchem S365 | <<locked>> | 94% | 30,458 psi | 75% | 2293 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 31,314 psi | 77% | 2224 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,503 psi | 80% | 2228 fps | 98.8% |
| Vihtavuori N150 | 32.2 gr | 84% | 29,544 psi | 73% | 2178 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,169 psi | 77% | 2215 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,706 psi | 81% | 2274 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 53 powders for 7 x 72 R loaded with the .284 | 151gr | Warner Tool Co. Flat Line. Somchem S365 delivers the highest muzzle velocity at 2,441 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,441 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 72–90 %, leaving at least 10 % headroom. The 151.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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. ReloadSwiss RS 60, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 151gr | Warner Tool Co. Flat Line 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.