Load Specifications
Load data in caliber 7 x 72 R with .284 | 175gr | Hornady ELD-X bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, Somchem S365 and Hodgdon Hybrid 100V.
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 4064 | <<locked>> | 82% | 35,172 psi | 87% | 2159 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 36,114 psi | 89% | 2182 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 35,302 psi | 87% | 2224 fps | 96.3% |
| Accurate 4350 | <<locked>> | 92% | 36,434 psi | 90% | 2254 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 35,375 psi | 87% | 2129 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,158 psi | 89% | 2152 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,550 psi | 90% | 2188 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,302 psi | 87% | 2172 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,535 psi | 90% | 2238 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,186 psi | 87% | 2218 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,027 psi | 89% | 2257 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,635 psi | 85% | 2238 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,706 psi | 81% | 2188 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,402 psi | 82% | 2215 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 35,998 psi | 89% | 2192 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 34,432 psi | 85% | 2169 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,346 psi | 87% | 2188 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,274 psi | 89% | 2215 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,780 psi | 86% | 1427 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,940 psi | 86% | 1437 fps | 100% |
| IMR 4831 | <<locked>> | 94% | 36,579 psi | 90% | 2228 fps | 96.7% |
| IMR 4831 | <<locked>> | 92% | 35,186 psi | 87% | 2211 fps | 96.4% |
| Norma 203B | <<locked>> | 82% | 36,477 psi | 90% | 2188 fps | 97.8% |
| Norma URP | <<locked>> | 92% | 36,085 psi | 89% | 2224 fps | 96.2% |
| Norma URP | <<locked>> | 90% | 34,751 psi | 86% | 2208 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 82% | 35,781 psi | 88% | 2198 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,317 psi | 87% | 1463 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,476 psi | 87% | 1476 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,998 psi | 89% | 2267 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 34,650 psi | 85% | 2247 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 36,376 psi | 90% | 2270 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 36,230 psi | 89% | 2188 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 34,664 psi | 85% | 2169 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,070 psi | 86% | 2188 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,781 psi | 88% | 2211 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,882 psi | 86% | 2067 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 35,723 psi | 88% | 2090 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 35,070 psi | 86% | 2152 fps | 97.8% |
| Somchem S355 | <<locked>> | 84% | 35,868 psi | 88% | 2175 fps | 98.2% |
| Somchem S365 | <<locked>> | 96% | 36,434 psi | 90% | 2274 fps | 99.3% |
| Somchem S365 | <<locked>> | 94% | 35,288 psi | 87% | 2260 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 35,549 psi | 88% | 2142 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 36,303 psi | 89% | 2165 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 90% | 35,563 psi | 88% | 2178 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 90% | 36,521 psi | 90% | 2208 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 90% | 35,795 psi | 88% | 2215 fps | 96% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,534 psi | 85% | 2251 fps | 96.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,447 psi | 87% | 2280 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,274 psi | 89% | 2172 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 34,534 psi | 85% | 2149 fps | 97.8% |
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 4064 | <<locked>> | 80% | 33,098 psi | 82% | 2116 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 33,779 psi | 83% | 2139 fps | 99.9% |
| Accurate 4350 | <<locked>> | 90% | 32,851 psi | 81% | 2175 fps | 95.4% |
| Accurate 4350 | <<locked>> | 88% | 31,647 psi | 78% | 2156 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 33,098 psi | 82% | 2080 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 33,895 psi | 83% | 2106 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,184 psi | 79% | 2100 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,054 psi | 81% | 2126 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,534 psi | 85% | 2192 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,025 psi | 81% | 2169 fps | 95.3% |
| Alliant Reloder-17 | 33.5 gr | 82% | 29,689 psi | 73% | 2110 fps | 95.6% |
| Alliant Reloder-17 | 32.6 gr | 80% | 28,471 psi | 70% | 2087 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,951 psi | 76% | 2146 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 29,718 psi | 73% | 2126 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 31,604 psi | 78% | 2103 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 32,474 psi | 80% | 2129 fps | 97.8% |
| Hodgdon Hybrid 100V | 33.1 gr | 88% | 29,486 psi | 73% | 2057 fps | 95.6% |
| Hodgdon Hybrid 100V | 32.4 gr | 86% | 28,456 psi | 70% | 2041 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 64% | 1276 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 64% | 1283 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 32,285 psi | 80% | 2142 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 33,199 psi | 82% | 2169 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 34,113 psi | 84% | 2142 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 34,084 psi | 84% | 2182 fps | 95.5% |
| Norma URP | <<locked>> | 88% | 32,837 psi | 81% | 2165 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 33,562 psi | 83% | 2149 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 65% | 1309 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 65% | 1316 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,646 psi | 73% | 2119 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,298 psi | 75% | 2146 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,113 psi | 84% | 2221 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 29,675 psi | 73% | 2054 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,516 psi | 75% | 2080 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,792 psi | 76% | 2093 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,502 psi | 78% | 2119 fps | 96.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,837 psi | 81% | 2028 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,388 psi | 82% | 2047 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 30,922 psi | 76% | 2067 fps | 96.6% |
| Somchem S355 | <<locked>> | 80% | 31,459 psi | 77% | 2083 fps | 96.9% |
| Somchem S365 | 32.5 gr | 84% | 25,251 psi | 62% | 2001 fps | 95.1% |
| Somchem S365 | 32.5 gr | 84% | 25,817 psi | 64% | 2028 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,196 psi | 72% | 2011 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 29,965 psi | 74% | 2037 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 88% | 33,547 psi | 83% | 2139 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 88% | 34,214 psi | 84% | 2162 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 88% | 33,562 psi | 83% | 2169 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 30,530 psi | 75% | 2162 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 31,386 psi | 77% | 2192 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,849 psi | 74% | 2034 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,543 psi | 70% | 2011 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 50 powders for 7 x 72 R loaded with the .284 | 175gr | Hornady ELD-X. Vihtavuori N555 delivers the highest muzzle velocity at 2,280 fps; across all powders the maximum-charge window runs from 1,427 fps to 2,280 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 50 of the 50 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 175.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-23, Hodgdon TrailBoss 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. Alliant Reloder-17, Somchem S365, Hodgdon Hybrid 100V rank at the top here: for 7 x 72 R with the .284 | 175gr | 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.