Load Specifications
Load data in caliber 7 x 72 R with .284 | 120gr | Barnes TSX BT bullet and 21 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 SNPE Vectan Tubal 5000.
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% | 35,404 psi | 87% | 2657 fps | 99.8% |
| Accurate 2520 | <<locked>> | 82% | 35,491 psi | 87% | 2657 fps | 97.3% |
| Accurate 4064 | <<locked>> | 90% | 35,737 psi | 88% | 2687 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 82% | 34,272 psi | 84% | 2651 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 36,187 psi | 89% | 2690 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,402 psi | 82% | 1785 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 34,882 psi | 86% | 2684 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 86% | 36,434 psi | 90% | 2690 fps | 97.5% |
| Norma 202 | <<locked>> | 84% | 35,578 psi | 88% | 2641 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,504 psi | 83% | 1827 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 36,114 psi | 89% | 2746 fps | 96.5% |
| Rottweil R 901 | <<locked>> | 82% | 36,738 psi | 90% | 2631 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 36,434 psi | 90% | 2690 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,375 psi | 87% | 2549 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 34,621 psi | 85% | 2552 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 34,664 psi | 85% | 2556 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 35,317 psi | 87% | 2562 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 88% | 36,521 psi | 90% | 2671 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 86% | 35,969 psi | 89% | 2628 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 86% | 34,461 psi | 85% | 2608 fps | 97.4% |
| Winchester 748 | <<locked>> | 82% | 34,664 psi | 85% | 2654 fps | 96% |
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 | 34.7 gr | 80% | 26,948 psi | 66% | 2448 fps | 98% |
| Accurate 2520 | <<locked>> | 80% | 32,837 psi | 81% | 2592 fps | 96.4% |
| Accurate 4064 | 35.5 gr | 82% | 27,238 psi | 67% | 2464 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 32,169 psi | 79% | 2605 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 33,794 psi | 83% | 2631 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,569 psi | 61% | 1591 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 30,530 psi | 75% | 2572 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,544 psi | 73% | 2516 fps | 95% |
| Norma 202 | <<locked>> | 80% | 31,024 psi | 76% | 2530 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,772 psi | 61% | 1634 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 33,866 psi | 83% | 2687 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 34,635 psi | 85% | 2582 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,544 psi | 73% | 2516 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,272 psi | 82% | 2500 fps | 97.1% |
| SNPE Vectan Tubal 5000 | 33.5 gr | 80% | 26,876 psi | 66% | 2352 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 32,692 psi | 81% | 2507 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 80% | 33,214 psi | 82% | 2516 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 28,079 psi | 69% | 2467 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 29,298 psi | 72% | 2464 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 28,181 psi | 69% | 2444 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 32,430 psi | 80% | 2598 fps | 95.1% |
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 58 powders for 7 x 72 R loaded with the .284 | 120gr | Barnes TSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,746 fps; across all powders the maximum-charge window runs from 1,785 fps to 2,746 fps. Accurate 4350 gives the best case fill at 100 %, and 58 of the 58 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 120.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Hodgdon Hybrid 100V, 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. Accurate 4064, Accurate 2495, SNPE Vectan Tubal 5000 rank at the top here: for 7 x 72 R with the .284 | 120gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2206H, ADI AR 2208 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.