Load Specifications
Load data in caliber 7 x 72 R with .283 | 130gr | Frontier PH HPFB 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, ReloadSwiss RS 14 and Hodgdon TrailBoss.
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>> | 86% | 36,158 psi | 89% | 2549 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 36,289 psi | 89% | 2566 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 36,230 psi | 89% | 2572 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 82% | 36,579 psi | 90% | 2575 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,926 psi | 88% | 2566 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 84% | 1706 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 36,419 psi | 90% | 2595 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 84% | 36,506 psi | 90% | 2569 fps | 98.1% |
| Lovex S062 | <<locked>> | 86% | 36,245 psi | 89% | 2530 fps | 96.3% |
| Norma 201 | <<locked>> | 82% | 35,621 psi | 88% | 2500 fps | 96.1% |
| Norma 202 | <<locked>> | 82% | 35,491 psi | 87% | 2520 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,040 psi | 84% | 1739 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 35,737 psi | 88% | 2628 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 84% | 35,882 psi | 88% | 2500 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 36,506 psi | 90% | 2569 fps | 98.1% |
| Shooters World Precision | <<locked>> | 86% | 36,245 psi | 89% | 2530 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 34,664 psi | 85% | 2438 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,694 psi | 88% | 2625 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 82% | 35,012 psi | 86% | 2438 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 84% | 34,548 psi | 85% | 2503 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 84% | 35,201 psi | 87% | 2497 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 94% | 34,853 psi | 86% | 2507 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 34,867 psi | 86% | 2513 fps | 98.1% |
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 2495 | <<locked>> | 80% | 29,660 psi | 73% | 2402 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 33,823 psi | 83% | 2510 fps | 97.3% |
| Accurate 4064 | <<locked>> | 80% | 28,065 psi | 69% | 2372 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 80% | 34,301 psi | 84% | 2530 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,576 psi | 83% | 2510 fps | 96% |
| Hodgdon TrailBoss | 11.5 gr | 80% | 25,208 psi | 62% | 1522 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 30,081 psi | 74% | 2444 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 31,749 psi | 78% | 2461 fps | 96.7% |
| Lovex S062 | <<locked>> | 84% | 33,881 psi | 83% | 2477 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 33,518 psi | 83% | 2451 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 33,156 psi | 82% | 2464 fps | 97.8% |
| ReloadSwiss RS 14 | 11.7 gr | 80% | 25,266 psi | 62% | 1555 fps | 100% |
| ReloadSwiss RS 60 | 38.4 gr | 86% | 31,430 psi | 77% | 2507 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 82% | 33,808 psi | 83% | 2451 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,749 psi | 78% | 2461 fps | 96.7% |
| Shooters World Precision | <<locked>> | 84% | 33,881 psi | 83% | 2477 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,500 psi | 70% | 2290 fps | 97.2% |
| Somchem S365 | <<locked>> | 98% | 33,431 psi | 82% | 2566 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 32,880 psi | 81% | 2392 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 80% | 30,139 psi | 74% | 2402 fps | 99.2% |
| Vihtavuori N140 | <<locked>> | 80% | 30,908 psi | 76% | 2395 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 92% | 32,779 psi | 81% | 2457 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 30,719 psi | 76% | 2411 fps | 96.9% |
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 54 powders for 7 x 72 R loaded with the .283 | 130gr | Frontier PH HPFB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,628 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,628 fps. Hodgdon TrailBoss 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 83–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.283" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 4831, 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. ReloadSwiss RS 60, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 7 x 72 R with the .283 | 130gr | Frontier PH HPFB 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.