Load Specifications
Load data in caliber 7 x 72 R with .284 | 120gr | CutEdge ER Raptor bullet and 21 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>> | 84% | 36,318 psi | 89% | 2585 fps | 99.5% |
| Accurate 2495 | <<locked>> | 88% | 36,129 psi | 89% | 2674 fps | 99.6% |
| Accurate 2520 | <<locked>> | 86% | 35,563 psi | 88% | 2641 fps | 96.7% |
| Accurate 4064 | <<locked>> | 94% | 36,709 psi | 90% | 2684 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 86% | 35,868 psi | 88% | 2661 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 35,099 psi | 86% | 2598 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,924 psi | 81% | 1742 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 35,433 psi | 87% | 2671 fps | 99% |
| Lovex D073.6 | <<locked>> | 88% | 35,563 psi | 88% | 2641 fps | 96.7% |
| Norma 202 | <<locked>> | 86% | 34,853 psi | 86% | 2595 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,011 psi | 81% | 1785 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 36,013 psi | 89% | 2585 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 35,563 psi | 88% | 2641 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 35,172 psi | 87% | 2513 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 36,463 psi | 90% | 2562 fps | 98.5% |
| Somchem S335 | <<locked>> | 86% | 36,405 psi | 90% | 2562 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 82% | 36,724 psi | 90% | 2552 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 88% | 36,651 psi | 90% | 2566 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 90% | 35,636 psi | 88% | 2628 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 88% | 34,635 psi | 85% | 2572 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 90% | 36,579 psi | 90% | 2641 fps | 97.6% |
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 2015 | <<locked>> | 80% | 32,068 psi | 79% | 2490 fps | 98.7% |
| Accurate 2495 | <<locked>> | 80% | 27,282 psi | 67% | 2454 fps | 97.5% |
| Accurate 2520 | <<locked>> | 82% | 30,835 psi | 76% | 2526 fps | 95% |
| Accurate 4064 | 34.5 gr | 86% | 28,123 psi | 69% | 2470 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 29,312 psi | 72% | 2507 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 80% | 32,866 psi | 81% | 2546 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,410 psi | 60% | 1562 fps | 100% |
| IMR 3031 | 30.7 gr | 80% | 25,846 psi | 64% | 2405 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 84% | 30,835 psi | 76% | 2526 fps | 95% |
| Norma 202 | <<locked>> | 82% | 30,574 psi | 75% | 2490 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,323 psi | 60% | 1598 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 31,952 psi | 79% | 2487 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 30,835 psi | 76% | 2526 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,821 psi | 76% | 2411 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,513 psi | 65% | 2313 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 30,153 psi | 74% | 2415 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 80% | 34,693 psi | 85% | 2510 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 28,631 psi | 71% | 2375 fps | 97.6% |
| Vihtavuori N135 | 31 gr | 80% | 25,585 psi | 63% | 2369 fps | 96.8% |
| Vihtavuori N140 | <<locked>> | 82% | 28,558 psi | 70% | 2418 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 84% | 29,979 psi | 74% | 2480 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 21 powders for 7 x 72 R loaded with the .284 | 120gr | CutEdge ER Raptor. Accurate 4064 delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,684 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 81–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. 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 | 120gr | CutEdge ER Raptor they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.