Load Specifications
Load data in caliber 7 x 72 R with .284 | 180gr | Berger Hybrid Target bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and Accurate 4350.
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% | 34,867 psi | 86% | 2192 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,027 psi | 89% | 2156 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,824 psi | 88% | 2205 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,346 psi | 87% | 2224 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,389 psi | 85% | 2208 fps | 97.9% |
| Bofors RP3 | <<locked>> | 82% | 35,534 psi | 88% | 2159 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 82% | 36,448 psi | 90% | 2159 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,737 psi | 86% | 2156 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 87% | 1421 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,129 psi | 89% | 2116 fps | 97.6% |
| IMR 4831 | <<locked>> | 94% | 34,563 psi | 85% | 2169 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 35,810 psi | 88% | 2198 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 87% | 1450 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 35,375 psi | 87% | 2234 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,940 psi | 86% | 2208 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 84% | 35,447 psi | 87% | 2152 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,519 psi | 85% | 2156 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 36,361 psi | 90% | 2067 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 36,608 psi | 90% | 2159 fps | 98.6% |
| Somchem S365 | <<locked>> | 94% | 36,100 psi | 89% | 2244 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 88% | 35,201 psi | 87% | 2113 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 88% | 36,724 psi | 90% | 2178 fps | 96.8% |
| Vihtavuori N550 | <<locked>> | 86% | 34,505 psi | 85% | 2172 fps | 96.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,695 psi | 90% | 2274 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,491 psi | 87% | 2139 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,603 psi | 75% | 2192 fps | 97.1% |
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 | 33.4 gr | 86% | 30,560 psi | 75% | 2103 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,736 psi | 83% | 2110 fps | 98.3% |
| Alliant Reloder-16 | 32.5 gr | 86% | 31,821 psi | 78% | 2113 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,225 psi | 72% | 2080 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 28,776 psi | 71% | 2073 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 33,199 psi | 82% | 2113 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 34,142 psi | 84% | 2113 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,209 psi | 67% | 1982 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 65% | 1266 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,852 psi | 83% | 2070 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 30,821 psi | 76% | 2087 fps | 95.1% |
| Norma URP | <<locked>> | 86% | 31,430 psi | 77% | 2103 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,498 psi | 65% | 1299 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,154 psi | 77% | 2139 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 32,721 psi | 81% | 2162 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 31,241 psi | 77% | 2064 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,372 psi | 80% | 2110 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,301 psi | 84% | 2031 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,387 psi | 80% | 2073 fps | 97.5% |
| Somchem S365 | 31.7 gr | 82% | 24,932 psi | 61% | 1975 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 27,557 psi | 68% | 1955 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 84% | 32,271 psi | 79% | 2090 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 84% | 32,372 psi | 80% | 2126 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 30,414 psi | 75% | 2139 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,369 psi | 67% | 1955 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 98% | 28,776 psi | 71% | 2139 fps | 95.9% |
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 26 powders for 7 x 72 R loaded with the .284 | 180gr | Berger Hybrid Target. Vihtavuori N555 delivers the highest muzzle velocity at 2,274 fps; across all powders the maximum-charge window runs from 1,421 fps to 2,274 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 180.0 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. Alliant Reloder-16, Somchem S365, Accurate 4350 rank at the top here: for 7 x 72 R with the .284 | 180gr | Berger Hybrid Target 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.