Load Specifications
Load data in caliber 7 x 72 R with .284 | 132gr | Peregrine VLR-4 bullet and 27 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 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% | 35,723 psi | 88% | 2523 fps | 99.9% |
| Accurate 2520 | <<locked>> | 82% | 34,330 psi | 85% | 2503 fps | 97.5% |
| Accurate 4064 | <<locked>> | 90% | 36,230 psi | 89% | 2556 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 82% | 36,521 psi | 90% | 2497 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 82% | 34,635 psi | 85% | 2516 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,318 psi | 89% | 2549 fps | 95.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 36,463 psi | 90% | 2556 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,765 psi | 83% | 1677 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 34,563 psi | 85% | 2536 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 82% | 36,521 psi | 90% | 2497 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 84% | 34,330 psi | 85% | 2503 fps | 97.5% |
| Lovex S062 | <<locked>> | 88% | 36,361 psi | 90% | 2516 fps | 96.4% |
| Norma 201 | <<locked>> | 84% | 35,839 psi | 88% | 2487 fps | 96.2% |
| Norma 202 | <<locked>> | 84% | 35,911 psi | 88% | 2510 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,605 psi | 83% | 1713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 36,622 psi | 90% | 2625 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 36,187 psi | 89% | 2487 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 34,330 psi | 85% | 2503 fps | 97.5% |
| Shooters World Precision | <<locked>> | 88% | 36,361 psi | 90% | 2516 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,795 psi | 88% | 2425 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 35,215 psi | 87% | 2428 fps | 99% |
| Somchem S335 | <<locked>> | 82% | 35,041 psi | 86% | 2425 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 84% | 35,418 psi | 87% | 2428 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 86% | 34,838 psi | 86% | 2493 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 86% | 35,665 psi | 88% | 2487 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 96% | 35,157 psi | 87% | 2490 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 35,375 psi | 87% | 2503 fps | 98.3% |
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% | 27,238 psi | 67% | 2326 fps | 98.7% |
| Accurate 2520 | <<locked>> | 80% | 31,865 psi | 78% | 2448 fps | 96.7% |
| Accurate 4064 | 32.4 gr | 80% | 25,831 psi | 64% | 2300 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,287 psi | 84% | 2448 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 32,358 psi | 80% | 2467 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 33,808 psi | 83% | 2493 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,836 psi | 78% | 2448 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,889 psi | 61% | 1496 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 28,456 psi | 70% | 2382 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 34,287 psi | 84% | 2448 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 29,820 psi | 73% | 2395 fps | 95.9% |
| Lovex S062 | <<locked>> | 86% | 34,142 psi | 84% | 2464 fps | 95.6% |
| Norma 201 | <<locked>> | 82% | 33,649 psi | 83% | 2438 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 31,560 psi | 78% | 2408 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,889 psi | 61% | 1532 fps | 100% |
| ReloadSwiss RS 60 | 38.2 gr | 88% | 31,937 psi | 79% | 2500 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 84% | 33,982 psi | 84% | 2438 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,820 psi | 73% | 2395 fps | 95.9% |
| Shooters World Precision | <<locked>> | 86% | 34,142 psi | 84% | 2464 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,562 psi | 83% | 2372 fps | 97.8% |
| SNPE Vectan Tubal 5000 | 31.3 gr | 80% | 27,093 psi | 67% | 2234 fps | 96.7% |
| Somchem S335 | <<locked>> | 80% | 32,909 psi | 81% | 2379 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 31,357 psi | 77% | 2339 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 28,413 psi | 70% | 2343 fps | 98.8% |
| Vihtavuori N140 | <<locked>> | 80% | 29,399 psi | 72% | 2339 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 92% | 30,908 psi | 76% | 2392 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 29,008 psi | 71% | 2349 fps | 96.2% |
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 61 powders for 7 x 72 R loaded with the .284 | 132gr | Peregrine VLR-4. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,625 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,625 fps. Accurate 4350 gives the best case fill at 100 %, and 61 of the 61 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 132.0 gr projectile in 0.284" calls for a 1:9.5 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, Accurate 4064, SNPE Vectan Tubal 5000 rank at the top here: for 7 x 72 R with the .284 | 132gr | Peregrine VLR-4 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.