Load Specifications
Load data in caliber 7 x 72 R with .284 | 160gr | Peregrine VRG-3 bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Hodgdon Hybrid 100V and Winchester 6.5 StaBALL.
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 2495 | <<locked>> | 82% | 36,216 psi | 89% | 2297 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 36,230 psi | 89% | 2293 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 34,243 psi | 84% | 2287 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 36,535 psi | 90% | 2329 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 82% | 35,041 psi | 86% | 2264 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 82% | 34,766 psi | 86% | 2254 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,419 psi | 90% | 2329 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,158 psi | 89% | 2323 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,492 psi | 90% | 2329 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,318 psi | 89% | 2375 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,781 psi | 88% | 2398 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,607 psi | 88% | 2392 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,372 psi | 80% | 2320 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,169 psi | 79% | 2313 fps | 96% |
| Bofors RP3 | <<locked>> | 84% | 35,476 psi | 87% | 2326 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 35,201 psi | 87% | 2320 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,954 psi | 86% | 2323 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,722 psi | 86% | 2313 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,548 psi | 85% | 1535 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 86% | 1535 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,724 psi | 90% | 2293 fps | 97% |
| IMR 4064 | <<locked>> | 82% | 36,463 psi | 90% | 2283 fps | 96.8% |
| IMR 4831 | <<locked>> | 94% | 36,506 psi | 90% | 2372 fps | 96.2% |
| IMR 4831 | <<locked>> | 94% | 36,274 psi | 89% | 2362 fps | 96.1% |
| Lovex S062 | <<locked>> | 82% | 36,361 psi | 90% | 2297 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 36,056 psi | 89% | 2290 fps | 98.5% |
| Norma 203B | <<locked>> | 82% | 36,114 psi | 89% | 2326 fps | 97.3% |
| Norma 203B | <<locked>> | 82% | 35,824 psi | 88% | 2320 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 82% | 35,505 psi | 87% | 2333 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 82% | 35,259 psi | 87% | 2326 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,925 psi | 86% | 1575 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,809 psi | 86% | 1568 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,723 psi | 88% | 2408 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,505 psi | 87% | 2402 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 86% | 35,694 psi | 88% | 2323 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 86% | 35,433 psi | 87% | 2316 fps | 97.8% |
| Shooters World Precision | <<locked>> | 82% | 36,361 psi | 90% | 2297 fps | 98.5% |
| Shooters World Precision | <<locked>> | 82% | 36,056 psi | 89% | 2290 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,838 psi | 86% | 2326 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,592 psi | 85% | 2316 fps | 96.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,738 psi | 90% | 2241 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,463 psi | 90% | 2234 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 34,577 psi | 85% | 2283 fps | 97.4% |
| Somchem S355 | <<locked>> | 86% | 36,550 psi | 90% | 2323 fps | 97.9% |
| Somchem S365 | <<locked>> | 96% | 36,143 psi | 89% | 2415 fps | 99% |
| Somchem S365 | <<locked>> | 96% | 35,911 psi | 88% | 2408 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 35,114 psi | 86% | 2274 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 34,882 psi | 86% | 2267 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 36,550 psi | 90% | 2300 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 82% | 36,564 psi | 90% | 2297 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,200 psi | 84% | 2388 fps | 96.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,997 psi | 84% | 2379 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,882 psi | 88% | 2306 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,679 psi | 88% | 2297 fps | 97.5% |
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% | 33,910 psi | 84% | 2251 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,895 psi | 83% | 2251 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 32,126 psi | 79% | 2241 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,097 psi | 79% | 2238 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 32,938 psi | 81% | 2218 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 32,677 psi | 80% | 2208 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,807 psi | 78% | 2231 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,560 psi | 78% | 2224 fps | 96.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,287 psi | 84% | 2283 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,200 psi | 84% | 2326 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,241 psi | 77% | 2287 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,285 psi | 77% | 2287 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,501 psi | 75% | 2270 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,356 psi | 75% | 2264 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 30,922 psi | 76% | 2228 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 30,661 psi | 76% | 2218 fps | 96.7% |
| Hodgdon Hybrid 100V | 36.3 gr | 90% | 30,864 psi | 76% | 2228 fps | 95.8% |
| Hodgdon Hybrid 100V | 36.3 gr | 90% | 30,676 psi | 76% | 2221 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,672 psi | 63% | 1371 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 63% | 1365 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,476 psi | 85% | 2247 fps | 96.3% |
| IMR 4064 | <<locked>> | 80% | 34,229 psi | 84% | 2238 fps | 96.1% |
| IMR 4831 | <<locked>> | 92% | 33,997 psi | 84% | 2320 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 33,779 psi | 83% | 2313 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 33,881 psi | 83% | 2247 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 33,895 psi | 83% | 2244 fps | 97.9% |
| Norma 203B | <<locked>> | 80% | 33,649 psi | 83% | 2274 fps | 96.6% |
| Norma 203B | <<locked>> | 80% | 33,634 psi | 83% | 2270 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 33,141 psi | 82% | 2280 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 33,185 psi | 82% | 2280 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,802 psi | 64% | 1404 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 64% | 1404 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,341 psi | 72% | 2247 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,124 psi | 72% | 2241 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 80% | 29,095 psi | 72% | 2175 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 28,863 psi | 71% | 2169 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 33,881 psi | 83% | 2247 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 33,895 psi | 83% | 2244 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,371 psi | 75% | 2221 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,314 psi | 80% | 2267 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,300 psi | 80% | 2156 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,285 psi | 80% | 2152 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 30,211 psi | 74% | 2185 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 30,226 psi | 74% | 2185 fps | 95.8% |
| Somchem S365 | 35.7 gr | 86% | 26,368 psi | 65% | 2165 fps | 95.2% |
| Somchem S365 | 35.7 gr | 86% | 26,179 psi | 64% | 2159 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 28,732 psi | 71% | 2136 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,500 psi | 70% | 2126 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,360 psi | 85% | 2254 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 34,113 psi | 84% | 2247 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 98% | 32,126 psi | 79% | 2339 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 31,937 psi | 79% | 2333 fps | 95.2% |
| Winchester 6.5 StaBALL | 37.7 gr | 84% | 29,457 psi | 73% | 2156 fps | 95.1% |
| Winchester 6.5 StaBALL | 37.7 gr | 84% | 29,283 psi | 72% | 2149 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 54 powders for 7 x 72 R loaded with the .284 | 160gr | Peregrine VRG-3. Somchem S365 delivers the highest muzzle velocity at 2,415 fps; across all powders the maximum-charge window runs from 1,535 fps to 2,415 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 79–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 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. Somchem S365, Hodgdon Hybrid 100V, Winchester 6.5 StaBALL rank at the top here: for 7 x 72 R with the .284 | 160gr | Peregrine VRG-3 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.