Load Specifications
Load data in caliber 7 x 72 R with .284 | 135gr | CutEdge ER Raptor bullet and 30 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 and Accurate 4064.
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% | 36,579 psi | 90% | 2431 fps | 99.9% |
| Accurate 2495 | <<locked>> | 88% | 34,592 psi | 85% | 2461 fps | 99.9% |
| Accurate 2520 | <<locked>> | 84% | 35,694 psi | 88% | 2490 fps | 97.8% |
| Accurate 2520 | <<locked>> | 84% | 35,694 psi | 88% | 2490 fps | 97.8% |
| Accurate 4064 | <<locked>> | 90% | 34,896 psi | 86% | 2487 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 35,708 psi | 88% | 2438 fps | 95.9% |
| Alliant AR-Comp | <<locked>> | 84% | 36,056 psi | 89% | 2500 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 36,709 psi | 90% | 2530 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 84% | 35,578 psi | 88% | 2493 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,591 psi | 83% | 1637 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 35,723 psi | 88% | 2516 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 82% | 35,708 psi | 88% | 2438 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 86% | 35,694 psi | 88% | 2490 fps | 97.8% |
| Lovex S062 | <<locked>> | 88% | 35,360 psi | 87% | 2448 fps | 96% |
| Norma 201 | <<locked>> | 84% | 35,027 psi | 86% | 2425 fps | 95.8% |
| Norma 202 | <<locked>> | 84% | 35,085 psi | 86% | 2448 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,446 psi | 82% | 1670 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 35,607 psi | 88% | 2552 fps | 97% |
| Rottweil R 901 | <<locked>> | 82% | 36,245 psi | 89% | 2438 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 86% | 35,418 psi | 87% | 2428 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 35,694 psi | 88% | 2490 fps | 97.8% |
| Shooters World Precision | <<locked>> | 88% | 35,360 psi | 87% | 2448 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 34,853 psi | 86% | 2359 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 36,303 psi | 89% | 2408 fps | 99.2% |
| Somchem S335 | <<locked>> | 84% | 36,463 psi | 90% | 2411 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 84% | 34,722 psi | 86% | 2372 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 88% | 36,056 psi | 89% | 2474 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 86% | 34,650 psi | 85% | 2421 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 98% | 36,492 psi | 90% | 2477 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 86% | 34,476 psi | 85% | 2441 fps | 98% |
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% | 34,185 psi | 84% | 2382 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 26,281 psi | 65% | 2264 fps | 98.4% |
| Accurate 2520 | <<locked>> | 80% | 30,821 psi | 76% | 2382 fps | 96.3% |
| Accurate 2520 | <<locked>> | 80% | 30,821 psi | 76% | 2382 fps | 96.3% |
| Accurate 4064 | 31 gr | 80% | 24,947 psi | 61% | 2234 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,460 psi | 82% | 2385 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 31,618 psi | 78% | 2408 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 34,301 psi | 84% | 2477 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 33,040 psi | 81% | 2438 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,700 psi | 61% | 1460 fps | 100% |
| IMR 3031 | 29.7 gr | 80% | 27,746 psi | 68% | 2323 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 33,460 psi | 82% | 2385 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,008 psi | 71% | 2336 fps | 95.6% |
| Lovex S062 | <<locked>> | 86% | 33,388 psi | 82% | 2405 fps | 95.3% |
| Norma 201 | <<locked>> | 82% | 32,808 psi | 81% | 2375 fps | 95% |
| Norma 202 | <<locked>> | 80% | 30,661 psi | 76% | 2346 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,685 psi | 61% | 1493 fps | 100% |
| ReloadSwiss RS 60 | 37.4 gr | 90% | 33,185 psi | 82% | 2490 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 33,924 psi | 84% | 2385 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 33,141 psi | 82% | 2375 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,008 psi | 71% | 2336 fps | 95.6% |
| Shooters World Precision | <<locked>> | 86% | 33,388 psi | 82% | 2405 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,851 psi | 81% | 2316 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,527 psi | 65% | 2178 fps | 96.4% |
| Somchem S335 | <<locked>> | 80% | 32,010 psi | 79% | 2316 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 30,530 psi | 75% | 2280 fps | 99% |
| Vihtavuori N135 | <<locked>> | 80% | 27,644 psi | 68% | 2283 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 28,572 psi | 70% | 2277 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 94% | 32,155 psi | 79% | 2382 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 28,297 psi | 70% | 2290 fps | 95.9% |
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 64 powders for 7 x 72 R loaded with the .284 | 135gr | CutEdge ER Raptor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,552 fps. Accurate 4350 gives the best case fill at 100 %, and 64 of the 64 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 135.0 gr projectile in 0.284" calls for a 1:8.5 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. ReloadSwiss RS 60, IMR 3031, Accurate 4064 rank at the top here: for 7 x 72 R with the .284 | 135gr | CutEdge ER Raptor 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.