Load Specifications
Load data in caliber 7 x 72 R with .284 | 130gr | NorthFork Bonded Core bullet and 23 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Vihtavuori N150 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% | 34,766 psi | 86% | 2526 fps | 99.9% |
| Accurate 4064 | <<locked>> | 86% | 35,056 psi | 86% | 2556 fps | 98.8% |
| Bofors RP3 | <<locked>> | 88% | 36,201 psi | 89% | 2589 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 35,752 psi | 88% | 2592 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,011 psi | 84% | 1713 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 35,012 psi | 86% | 2572 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 82% | 35,331 psi | 87% | 2552 fps | 97.9% |
| Lovex S062 | <<locked>> | 84% | 34,780 psi | 86% | 2510 fps | 96.1% |
| Norma 201 | <<locked>> | 82% | 36,521 psi | 90% | 2530 fps | 96.6% |
| Norma 202 | <<locked>> | 82% | 36,477 psi | 90% | 2552 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,272 psi | 84% | 1755 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 34,606 psi | 85% | 2608 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 34,737 psi | 86% | 2484 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 90% | 36,071 psi | 89% | 2575 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 35,331 psi | 87% | 2552 fps | 97.9% |
| Shooters World Precision | <<locked>> | 84% | 34,780 psi | 86% | 2510 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,549 psi | 88% | 2464 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,738 psi | 90% | 2664 fps | 97% |
| Vihtavuori N133 | <<locked>> | 82% | 35,781 psi | 88% | 2464 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 84% | 35,375 psi | 87% | 2530 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 84% | 36,114 psi | 89% | 2526 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 94% | 35,955 psi | 89% | 2539 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 35,737 psi | 88% | 2539 fps | 98.5% |
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% | 30,472 psi | 75% | 2428 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 28,819 psi | 71% | 2402 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 33,808 psi | 83% | 2533 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,518 psi | 83% | 2536 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 62% | 1532 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 30,893 psi | 76% | 2474 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 32,953 psi | 81% | 2497 fps | 97.2% |
| Lovex S062 | <<locked>> | 82% | 32,808 psi | 81% | 2461 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 34,200 psi | 84% | 2477 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 34,098 psi | 84% | 2497 fps | 98.2% |
| ReloadSwiss RS 14 | 12 gr | 80% | 25,382 psi | 63% | 1568 fps | 100% |
| ReloadSwiss RS 60 | 39.5 gr | 86% | 32,474 psi | 80% | 2549 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 32,547 psi | 80% | 2428 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 33,939 psi | 84% | 2530 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,953 psi | 81% | 2497 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 32,808 psi | 81% | 2461 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,399 psi | 72% | 2323 fps | 97.7% |
| Somchem S365 | <<locked>> | 96% | 32,532 psi | 80% | 2552 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 33,692 psi | 83% | 2421 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 31,198 psi | 77% | 2434 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 31,792 psi | 78% | 2425 fps | 97.9% |
| Vihtavuori N150 | 37.1 gr | 90% | 31,604 psi | 78% | 2438 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 31,575 psi | 78% | 2441 fps | 97.3% |
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 23 powders for 7 x 72 R loaded with the .284 | 130gr | NorthFork Bonded Core. Somchem S365 delivers the highest muzzle velocity at 2,664 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,664 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 23 of the 23 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Vihtavuori N150, ReloadSwiss RS 14 rank at the top here: for 7 x 72 R with the .284 | 130gr | NorthFork Bonded Core 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.