Load Specifications
Load data in caliber 7 x 72 R with .284 | 185gr | Nosler RDF 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, Accurate 4350 and Vihtavuori N555.
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>> | 90% | 35,520 psi | 87% | 2169 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,463 psi | 90% | 2126 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,347 psi | 90% | 2182 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,650 psi | 88% | 2195 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,780 psi | 86% | 2185 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 35,447 psi | 87% | 2247 fps | 96.1% |
| Bofors RP3 | <<locked>> | 82% | 35,737 psi | 88% | 2126 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 35,259 psi | 87% | 2133 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 87% | 1394 fps | 100% |
| IMR 4831 | <<locked>> | 92% | 36,680 psi | 90% | 2172 fps | 97.4% |
| Norma URP | <<locked>> | 90% | 36,114 psi | 89% | 2169 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,708 psi | 88% | 1430 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 35,592 psi | 88% | 2201 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,288 psi | 87% | 2182 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 35,940 psi | 89% | 2126 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,708 psi | 85% | 2126 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 36,724 psi | 90% | 2037 fps | 100% |
| Somchem S355 | <<locked>> | 82% | 34,693 psi | 85% | 2087 fps | 98.3% |
| Somchem S365 | <<locked>> | 94% | 36,477 psi | 90% | 2218 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 35,143 psi | 87% | 2077 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 88% | 35,491 psi | 87% | 2126 fps | 96.7% |
| Vihtavuori N550 | <<locked>> | 88% | 34,621 psi | 85% | 2126 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 98% | 34,795 psi | 86% | 2201 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,795 psi | 88% | 2113 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,763 psi | 76% | 2165 fps | 97.6% |
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 4350 | 32.9 gr | 86% | 30,806 psi | 76% | 2073 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,098 psi | 84% | 2080 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,213 psi | 79% | 2090 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,399 psi | 72% | 2054 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 27,485 psi | 68% | 2011 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 33,199 psi | 82% | 2198 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 33,634 psi | 83% | 2087 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,528 psi | 68% | 1959 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 64% | 1240 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 30,255 psi | 75% | 2041 fps | 95.2% |
| Norma URP | <<locked>> | 86% | 31,879 psi | 79% | 2083 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,368 psi | 65% | 1273 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,285 psi | 77% | 2110 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,054 psi | 81% | 2136 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,604 psi | 78% | 2041 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,547 psi | 80% | 2080 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,606 psi | 85% | 2005 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,721 psi | 81% | 2047 fps | 97.8% |
| Somchem S365 | 30.5 gr | 80% | 23,685 psi | 58% | 1906 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 30,966 psi | 76% | 1995 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 31,386 psi | 77% | 2037 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 86% | 32,721 psi | 81% | 2087 fps | 95.6% |
| Vihtavuori N555 | 34.5 gr | 92% | 28,761 psi | 71% | 2067 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,702 psi | 68% | 1936 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 27,398 psi | 67% | 2067 fps | 95.3% |
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 | 185gr | Nosler RDF. Alliant Reloder-26 delivers the highest muzzle velocity at 2,247 fps; across all powders the maximum-charge window runs from 1,394 fps to 2,247 fps. Alliant Reloder-23 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 76–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.284" calls for a 1:9.0 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. Somchem S365, Accurate 4350, Vihtavuori N555 rank at the top here: for 7 x 72 R with the .284 | 185gr | Nosler RDF 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.