Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | Berger Classic Hybrid Hunter bullet and 22 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 ReloadSwiss RS 14.
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% | 34,751 psi | 86% | 2369 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 36,172 psi | 89% | 2398 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 36,579 psi | 90% | 2405 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,839 psi | 88% | 2470 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 35,549 psi | 88% | 2402 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,012 psi | 86% | 2392 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,592 psi | 85% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,550 psi | 90% | 2362 fps | 96.2% |
| Lovex S062 | <<locked>> | 82% | 36,289 psi | 89% | 2369 fps | 98% |
| Norma 203B | <<locked>> | 82% | 35,911 psi | 88% | 2395 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 82% | 35,389 psi | 87% | 2402 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,983 psi | 86% | 1634 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 35,781 psi | 88% | 2480 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 86% | 35,737 psi | 88% | 2395 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 36,289 psi | 89% | 2369 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,766 psi | 86% | 2395 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 36,535 psi | 90% | 2313 fps | 99.9% |
| Somchem S355 | <<locked>> | 84% | 34,461 psi | 85% | 2352 fps | 96.7% |
| Somchem S365 | <<locked>> | 96% | 36,071 psi | 89% | 2484 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 35,085 psi | 86% | 2346 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 36,579 psi | 90% | 2372 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,810 psi | 88% | 2372 fps | 96.9% |
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% | 32,430 psi | 80% | 2316 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,763 psi | 78% | 2300 fps | 96.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,403 psi | 85% | 2359 fps | 95.5% |
| Alliant Reloder-17 | 37.8 gr | 84% | 31,488 psi | 78% | 2359 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 31,183 psi | 77% | 2300 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,908 psi | 76% | 2293 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,933 psi | 64% | 1427 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,418 psi | 85% | 2316 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 34,200 psi | 84% | 2323 fps | 97.5% |
| Norma 203B | <<locked>> | 80% | 33,823 psi | 83% | 2349 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 33,127 psi | 82% | 2349 fps | 95.3% |
| ReloadSwiss RS 14 | 11.8 gr | 80% | 26,078 psi | 64% | 1460 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,457 psi | 73% | 2316 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 80% | 29,269 psi | 72% | 2247 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 34,200 psi | 84% | 2323 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,532 psi | 80% | 2343 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,300 psi | 80% | 2228 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 30,313 psi | 75% | 2254 fps | 95.1% |
| Somchem S365 | 37.5 gr | 88% | 28,166 psi | 69% | 2280 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 28,776 psi | 71% | 2201 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 80% | 34,200 psi | 84% | 2323 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,575 psi | 78% | 2274 fps | 95.2% |
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 45 powders for 7 x 72 R loaded with the .284 | 150gr | Berger Classic Hybrid Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,503 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,503 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 150.0 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-26, 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, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 150gr | Berger Classic Hybrid Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Reloder-26, Hodgdon H380 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.