Load Specifications
Load data in caliber 7 x 72 R with .284 | 139gr | Hornady CX bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 4064, Accurate 2495 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 35,230 psi | 87% | 2346 fps | 99.7% |
| Accurate 2495 | <<locked>> | 90% | 35,128 psi | 87% | 2415 fps | 99.9% |
| Accurate 2520 | <<locked>> | 84% | 35,476 psi | 87% | 2415 fps | 97.7% |
| Accurate 4064 | <<locked>> | 92% | 35,201 psi | 87% | 2434 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 36,564 psi | 90% | 2395 fps | 96% |
| Alliant AR-Comp | <<locked>> | 84% | 34,519 psi | 85% | 2411 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 36,158 psi | 89% | 2448 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,127 psi | 82% | 1575 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 35,172 psi | 87% | 2444 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 84% | 36,564 psi | 90% | 2395 fps | 96% |
| Lovex D073.6 | <<locked>> | 88% | 36,448 psi | 90% | 2448 fps | 97.9% |
| Lovex S062 | <<locked>> | 90% | 36,071 psi | 89% | 2405 fps | 96.1% |
| Norma 201 | <<locked>> | 86% | 35,839 psi | 88% | 2382 fps | 95.9% |
| Norma 202 | <<locked>> | 86% | 35,563 psi | 88% | 2398 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,373 psi | 82% | 1617 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 36,187 psi | 89% | 2500 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 82% | 34,925 psi | 86% | 2346 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 88% | 35,969 psi | 89% | 2379 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 36,448 psi | 90% | 2448 fps | 97.9% |
| Shooters World Precision | <<locked>> | 90% | 36,071 psi | 89% | 2405 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 35,839 psi | 88% | 2320 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 34,838 psi | 86% | 2320 fps | 98.8% |
| Somchem S321 | <<locked>> | 82% | 36,347 psi | 90% | 2415 fps | 96.4% |
| Somchem S335 | <<locked>> | 84% | 34,896 psi | 86% | 2320 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 35,679 psi | 88% | 2329 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 90% | 36,506 psi | 90% | 2425 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 88% | 35,824 psi | 88% | 2385 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 94% | 34,911 psi | 86% | 2379 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 84% | 36,535 psi | 90% | 2392 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 88% | 34,505 psi | 85% | 2375 fps | 97.8% |
| Winchester 748 | <<locked>> | 84% | 34,969 psi | 86% | 2418 fps | 96.6% |
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% | 32,750 psi | 81% | 2293 fps | 99.4% |
| Accurate 2495 | 29.1 gr | 80% | 24,990 psi | 62% | 2178 fps | 97.9% |
| Accurate 2520 | <<locked>> | 80% | 30,705 psi | 76% | 2310 fps | 96.2% |
| Accurate 4064 | 29.8 gr | 82% | 25,338 psi | 62% | 2198 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 34,403 psi | 85% | 2346 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 30,327 psi | 75% | 2320 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 31,676 psi | 78% | 2346 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,410 psi | 60% | 1407 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 28,747 psi | 71% | 2293 fps | 98% |
| IMR 8208 XBR | <<locked>> | 82% | 34,403 psi | 85% | 2346 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 82% | 29,573 psi | 73% | 2293 fps | 95.7% |
| Lovex S062 | <<locked>> | 88% | 33,910 psi | 84% | 2359 fps | 95.3% |
| Norma 201 | <<locked>> | 84% | 33,431 psi | 82% | 2329 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 29,211 psi | 72% | 2254 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,424 psi | 60% | 1440 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 34,113 psi | 84% | 2451 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 32,576 psi | 80% | 2293 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 86% | 33,808 psi | 83% | 2329 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 29,573 psi | 73% | 2293 fps | 95.7% |
| Shooters World Precision | <<locked>> | 88% | 33,910 psi | 84% | 2359 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,575 psi | 78% | 2228 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 25,469 psi | 63% | 2096 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 33,939 psi | 84% | 2362 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 30,879 psi | 76% | 2231 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 80% | 31,473 psi | 78% | 2241 fps | 99.1% |
| Vihtavuori N135 | 28.1 gr | 80% | 26,353 psi | 65% | 2195 fps | 98.1% |
| Vihtavuori N140 | <<locked>> | 80% | 27,717 psi | 68% | 2198 fps | 96% |
| Vihtavuori N150 | <<locked>> | 92% | 32,503 psi | 80% | 2326 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 82% | 34,011 psi | 84% | 2336 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 82% | 28,253 psi | 70% | 2224 fps | 95.6% |
| Winchester 748 | <<locked>> | 82% | 32,648 psi | 80% | 2365 fps | 95.7% |
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 66 powders for 7 x 72 R loaded with the .284 | 139gr | Hornady CX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,500 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,500 fps. Accurate 4350 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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. Accurate 4064, Accurate 2495, Vihtavuori N135 rank at the top here: for 7 x 72 R with the .284 | 139gr | Hornady CX 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.