Load Specifications
Load data in caliber 7 x 72 R with .284 | 140gr | Barnes TTSX BT bullet and 29 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 Vihtavuori N150.
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% | 34,940 psi | 86% | 2431 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 35,186 psi | 87% | 2457 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 82% | 36,303 psi | 89% | 2467 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,259 psi | 87% | 2451 fps | 96.2% |
| Bofors RP3 | <<locked>> | 88% | 34,432 psi | 85% | 2448 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,389 psi | 87% | 2457 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 36,071 psi | 89% | 2448 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,649 psi | 83% | 1617 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 34,389 psi | 85% | 2454 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 84% | 35,853 psi | 88% | 2461 fps | 98.4% |
| Lovex S062 | <<locked>> | 86% | 35,433 psi | 87% | 2421 fps | 96.7% |
| Norma 201 | <<locked>> | 82% | 34,795 psi | 86% | 2392 fps | 96.5% |
| Norma 202 | <<locked>> | 82% | 34,882 psi | 86% | 2411 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,910 psi | 84% | 1660 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 35,317 psi | 87% | 2523 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 35,143 psi | 87% | 2392 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 92% | 36,695 psi | 90% | 2487 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 35,853 psi | 88% | 2461 fps | 98.4% |
| Shooters World Precision | <<locked>> | 86% | 35,433 psi | 87% | 2421 fps | 96.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 36,477 psi | 90% | 2379 fps | 99.5% |
| Somchem S335 | <<locked>> | 82% | 36,158 psi | 89% | 2375 fps | 99.4% |
| Somchem S355 | <<locked>> | 90% | 35,752 psi | 88% | 2451 fps | 95.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,186 psi | 87% | 2520 fps | 96.9% |
| Vihtavuori N135 | <<locked>> | 86% | 36,260 psi | 89% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 35,201 psi | 87% | 2398 fps | 99% |
| Vihtavuori N150 | <<locked>> | 92% | 36,448 psi | 90% | 2441 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 86% | 36,260 psi | 89% | 2438 fps | 98.8% |
| Winchester 748 | <<locked>> | 82% | 36,289 psi | 89% | 2480 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,592 psi | 88% | 2451 fps | 95.9% |
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% | 28,442 psi | 70% | 2283 fps | 99.3% |
| Accurate 4064 | 31.9 gr | 80% | 26,948 psi | 66% | 2260 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 33,852 psi | 83% | 2418 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 33,011 psi | 81% | 2398 fps | 95.4% |
| Bofors RP3 | <<locked>> | 86% | 32,198 psi | 79% | 2395 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,127 psi | 82% | 2408 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 80% | 33,576 psi | 83% | 2392 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,976 psi | 62% | 1447 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 32,097 psi | 79% | 2402 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 31,082 psi | 77% | 2356 fps | 97.1% |
| Lovex S062 | <<locked>> | 82% | 31,140 psi | 77% | 2320 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 32,619 psi | 80% | 2339 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 32,663 psi | 80% | 2362 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,005 psi | 62% | 1480 fps | 100% |
| ReloadSwiss RS 60 | 36.8 gr | 86% | 31,009 psi | 76% | 2408 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 31,169 psi | 77% | 2297 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 90% | 34,345 psi | 85% | 2438 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,082 psi | 77% | 2356 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 31,140 psi | 77% | 2320 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,195 psi | 69% | 2198 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 33,939 psi | 84% | 2329 fps | 99% |
| Somchem S355 | <<locked>> | 88% | 33,504 psi | 83% | 2398 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 31,038 psi | 76% | 2415 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 29,733 psi | 73% | 2303 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 30,879 psi | 76% | 2303 fps | 98% |
| Vihtavuori N150 | 34.7 gr | 86% | 29,921 psi | 74% | 2297 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 29,472 psi | 73% | 2283 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 34,055 psi | 84% | 2431 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 33,431 psi | 82% | 2402 fps | 95.1% |
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 29 powders for 7 x 72 R loaded with the .284 | 140gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,523 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,523 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 29 of the 29 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 140.0 gr projectile in 0.284" calls for a 1:10.0 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, Accurate 4064, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 140gr | Barnes TTSX BT 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.