Load Specifications
Load data in caliber 7 x 72 R with .284 | 180gr | Lapua ScenarL bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N555, Somchem S365 and Winchester StaBALL HD.
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 4350 | <<locked>> | 88% | 35,998 psi | 89% | 2241 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,274 psi | 89% | 2251 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 84% | 35,766 psi | 88% | 2267 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 35,157 psi | 87% | 2264 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,824 psi | 88% | 2329 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 35,462 psi | 87% | 2205 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,651 psi | 90% | 2198 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,491 psi | 87% | 1457 fps | 100% |
| IMR 4831 | <<locked>> | 92% | 35,563 psi | 88% | 2218 fps | 97.4% |
| Lovex S065 | <<locked>> | 84% | 35,810 psi | 88% | 2156 fps | 95.8% |
| Norma URP | <<locked>> | 88% | 36,405 psi | 90% | 2241 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,056 psi | 89% | 1493 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 35,578 psi | 88% | 2270 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,578 psi | 88% | 2254 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,071 psi | 89% | 2267 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 36,230 psi | 89% | 2195 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 35,810 psi | 88% | 2156 fps | 95.8% |
| Somchem S365 | <<locked>> | 92% | 36,738 psi | 90% | 2290 fps | 99.8% |
| Unknown powder | <<locked>> | 84% | 34,838 psi | 86% | 2195 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 86% | 35,781 psi | 88% | 2156 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 84% | 34,737 psi | 86% | 2172 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 84% | 35,259 psi | 87% | 2215 fps | 97% |
| Vihtavuori N555 | <<locked>> | 96% | 35,346 psi | 87% | 2277 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 35,650 psi | 88% | 2178 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,083 psi | 81% | 2306 fps | 99.1% |
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 4350 | <<locked>> | 82% | 29,370 psi | 72% | 2100 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,356 psi | 75% | 2113 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,488 psi | 78% | 2172 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 90% | 27,659 psi | 68% | 2080 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 33,475 psi | 82% | 2277 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,918 psi | 64% | 1978 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,316 psi | 85% | 2152 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 65% | 1299 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 29,486 psi | 73% | 2087 fps | 95.3% |
| Lovex S065 | <<locked>> | 82% | 33,736 psi | 83% | 2110 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 30,037 psi | 74% | 2103 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 66% | 1332 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,504 psi | 83% | 2228 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,285 psi | 77% | 2162 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 33,794 psi | 83% | 2215 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,011 psi | 84% | 2149 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 33,736 psi | 83% | 2110 fps | 95.1% |
| Somchem S365 | 33.2 gr | 80% | 25,150 psi | 62% | 2011 fps | 96.6% |
| Unknown powder | <<locked>> | 82% | 32,779 psi | 81% | 2152 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,660 psi | 73% | 2028 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 80% | 30,501 psi | 75% | 2080 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 30,966 psi | 76% | 2123 fps | 95.4% |
| Vihtavuori N555 | 36 gr | 88% | 27,485 psi | 68% | 2093 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,385 psi | 72% | 2041 fps | 97% |
| Winchester StaBALL HD | 39.7 gr | 92% | 25,933 psi | 64% | 2093 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 | 180gr | Lapua ScenarL. Alliant Reloder-26 delivers the highest muzzle velocity at 2,329 fps; across all powders the maximum-charge window runs from 1,457 fps to 2,329 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 81–90 %, leaving at least 10 % headroom. The 180.0 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, Winchester StaBALL HD 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. Vihtavuori N555, Somchem S365, Winchester StaBALL HD rank at the top here: for 7 x 72 R with the .284 | 180gr | Lapua ScenarL 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.