Load Specifications
Load data in caliber 7 x 72 R with .284 | 115gr | CutEdge ESP Raptor bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Accurate 4064 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 2015 | <<locked>> | 82% | 35,998 psi | 89% | 2661 fps | 99.5% |
| Accurate 2495 | <<locked>> | 86% | 35,897 psi | 88% | 2746 fps | 99.5% |
| Accurate 2520 | <<locked>> | 84% | 35,143 psi | 87% | 2713 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 36,608 psi | 90% | 2759 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 84% | 35,360 psi | 87% | 2733 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,286 psi | 82% | 1824 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 35,157 psi | 87% | 2746 fps | 99% |
| Lovex D073.6 | <<locked>> | 86% | 35,143 psi | 87% | 2713 fps | 96.7% |
| Norma 202 | <<locked>> | 86% | 36,666 psi | 90% | 2720 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,344 psi | 82% | 1867 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 35,766 psi | 88% | 2664 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 35,143 psi | 87% | 2713 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 36,651 psi | 90% | 2631 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 36,056 psi | 89% | 2635 fps | 98.5% |
| Somchem S335 | <<locked>> | 84% | 36,013 psi | 89% | 2638 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 86% | 36,230 psi | 89% | 2641 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 88% | 35,331 psi | 87% | 2700 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 88% | 36,550 psi | 90% | 2697 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 88% | 36,289 psi | 89% | 2713 fps | 97.6% |
| Winchester 748 | <<locked>> | 82% | 36,463 psi | 90% | 2749 fps | 96.1% |
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 2015 | <<locked>> | 80% | 33,576 psi | 83% | 2605 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 29,109 psi | 72% | 2575 fps | 98.1% |
| Accurate 2520 | <<locked>> | 82% | 32,779 psi | 81% | 2654 fps | 95.8% |
| Accurate 4064 | 36.6 gr | 84% | 28,137 psi | 69% | 2543 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 30,922 psi | 76% | 2628 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,511 psi | 60% | 1631 fps | 100% |
| IMR 3031 | 33.3 gr | 80% | 27,195 psi | 67% | 2526 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 84% | 32,779 psi | 81% | 2654 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 30,110 psi | 74% | 2556 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,424 psi | 60% | 1667 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 33,475 psi | 82% | 2605 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 32,779 psi | 81% | 2654 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,430 psi | 80% | 2530 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 27,804 psi | 68% | 2428 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 31,589 psi | 78% | 2530 fps | 97% |
| Vihtavuori N133 | <<locked>> | 80% | 30,153 psi | 74% | 2493 fps | 98.1% |
| Vihtavuori N135 | 33.7 gr | 80% | 27,180 psi | 67% | 2490 fps | 97.5% |
| Vihtavuori N140 | <<locked>> | 80% | 28,123 psi | 69% | 2480 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 82% | 29,733 psi | 73% | 2549 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 33,881 psi | 83% | 2687 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 54 powders for 7 x 72 R loaded with the .284 | 115gr | CutEdge ESP Raptor. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,799 fps; across all powders the maximum-charge window runs from 1,824 fps to 2,799 fps. Hodgdon Hybrid 100V 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 80–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.284" calls for a 1:12.0 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. IMR 3031, Accurate 4064, Vihtavuori N135 rank at the top here: for 7 x 72 R with the .284 | 115gr | CutEdge ESP Raptor 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.