Load Specifications
Load data in caliber 7 x 72 R with .284 | 110gr | Speer TNT bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 4064, SNPE Vectan Tubal 5000 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 2495 | <<locked>> | 84% | 35,911 psi | 88% | 2805 fps | 99.4% |
| Accurate 2520 | <<locked>> | 82% | 34,606 psi | 85% | 2759 fps | 96.2% |
| Accurate 4064 | <<locked>> | 90% | 36,506 psi | 90% | 2818 fps | 98% |
| Alliant AR-Comp | <<locked>> | 82% | 34,679 psi | 85% | 2782 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,634 psi | 83% | 1886 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 36,738 psi | 90% | 2848 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 84% | 34,606 psi | 85% | 2759 fps | 96.2% |
| Norma 202 | <<locked>> | 84% | 36,042 psi | 89% | 2769 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,750 psi | 83% | 1932 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 34,606 psi | 85% | 2759 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,926 psi | 88% | 2677 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 35,288 psi | 87% | 2680 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 35,346 psi | 87% | 2684 fps | 98% |
| Vihtavuori N133 | <<locked>> | 84% | 35,520 psi | 87% | 2687 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 86% | 34,911 psi | 86% | 2753 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 86% | 35,824 psi | 88% | 2746 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 86% | 35,534 psi | 88% | 2759 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 2495 | <<locked>> | 80% | 31,415 psi | 77% | 2694 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 32,213 psi | 79% | 2700 fps | 95.3% |
| Accurate 4064 | 37.4 gr | 82% | 28,253 psi | 70% | 2598 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 32,416 psi | 80% | 2726 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,976 psi | 62% | 1693 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 28,471 psi | 70% | 2621 fps | 96.6% |
| Lovex D073.6 | <<locked>> | 82% | 32,445 psi | 80% | 2703 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,778 psi | 78% | 2657 fps | 96% |
| ReloadSwiss RS 14 | 12.8 gr | 80% | 24,918 psi | 61% | 1729 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 32,445 psi | 80% | 2703 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,692 psi | 83% | 2621 fps | 96.6% |
| SNPE Vectan Tubal 5000 | 35.2 gr | 80% | 27,282 psi | 67% | 2467 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 33,272 psi | 82% | 2631 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 31,430 psi | 77% | 2585 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 80% | 28,543 psi | 70% | 2585 fps | 97.8% |
| Vihtavuori N140 | <<locked>> | 80% | 29,443 psi | 73% | 2575 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 82% | 31,154 psi | 77% | 2644 fps | 95.6% |
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 50 powders for 7 x 72 R loaded with the .284 | 110gr | Speer TNT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,886 fps to 2,871 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 83–90 %, leaving at least 10 % headroom. The 110.0 gr projectile in 0.284" calls for a 1:14.0 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, SNPE Vectan Tubal 5000, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 110gr | Speer TNT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, ADI AR 2208, ADI Benchmark 8208 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.