Load Specifications
Load data in caliber 7 x 72 R with .284 | 108gr | Reichenberg HDB Universal bullet and 18 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 4064, Accurate 2495 and Vihtavuori N135.
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>> | 88% | 35,433 psi | 87% | 2795 fps | 99.4% |
| Accurate 2520 | <<locked>> | 84% | 35,984 psi | 89% | 2815 fps | 96.4% |
| Accurate 4064 | <<locked>> | 90% | 35,549 psi | 88% | 2818 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 84% | 36,347 psi | 90% | 2844 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,533 psi | 83% | 1900 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 35,781 psi | 88% | 2848 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 86% | 36,230 psi | 89% | 2818 fps | 96.5% |
| Norma 202 | <<locked>> | 84% | 35,230 psi | 87% | 2769 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,634 psi | 83% | 1946 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 36,709 psi | 90% | 2766 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 86% | 36,230 psi | 89% | 2818 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,099 psi | 86% | 2677 fps | 96.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 36,477 psi | 90% | 2726 fps | 98.2% |
| Somchem S335 | <<locked>> | 82% | 34,592 psi | 85% | 2684 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 84% | 34,679 psi | 85% | 2687 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 94% | 36,521 psi | 90% | 2805 fps | 99.1% |
| Vihtavuori N140 | <<locked>> | 86% | 34,969 psi | 86% | 2743 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 86% | 34,693 psi | 85% | 2759 fps | 96.6% |
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 2495 | 36.2 gr | 80% | 27,093 psi | 67% | 2572 fps | 97.2% |
| Accurate 2520 | <<locked>> | 82% | 33,707 psi | 83% | 2759 fps | 95.6% |
| Accurate 4064 | 38 gr | 84% | 29,283 psi | 72% | 2648 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 31,807 psi | 78% | 2733 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,845 psi | 61% | 1703 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 27,920 psi | 69% | 2625 fps | 96% |
| Lovex D073.6 | <<locked>> | 84% | 33,707 psi | 83% | 2759 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 30,966 psi | 76% | 2654 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,787 psi | 61% | 1739 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 34,476 psi | 85% | 2710 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 33,707 psi | 83% | 2759 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,127 psi | 82% | 2628 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 28,398 psi | 70% | 2520 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 32,503 psi | 80% | 2631 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 80% | 30,647 psi | 75% | 2585 fps | 97.9% |
| Vihtavuori N135 | 34.4 gr | 82% | 25,266 psi | 62% | 2497 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 82% | 30,792 psi | 76% | 2635 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 84% | 32,343 psi | 80% | 2697 fps | 95.7% |
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 48 powders for 7 x 72 R loaded with the .284 | 108gr | Reichenberg HDB Universal. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,900 fps to 2,864 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 82–90 %, leaving at least 10 % headroom. The 108.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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. Accurate 4064, Accurate 2495, Vihtavuori N135 rank at the top here: for 7 x 72 R with the .284 | 108gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, ADI Benchmark 8208, Alliant Reloder- TS 15.5 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.