Load Specifications
Load data in caliber 7 x 72 R with .284 | 150gr | RWS Speed Tip Professional bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, Rottweil R 903 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>> | 84% | 36,579 psi | 90% | 2359 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 34,505 psi | 85% | 2343 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,216 psi | 89% | 2379 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,708 psi | 88% | 2438 fps | 96.2% |
| Bofors RP3 | <<locked>> | 86% | 35,375 psi | 87% | 2375 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,853 psi | 86% | 2359 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,056 psi | 86% | 2385 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,374 psi | 85% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,708 psi | 85% | 2310 fps | 96.2% |
| IMR 3031 | <<locked>> | 84% | 36,724 psi | 90% | 2402 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,186 psi | 87% | 2362 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 36,709 psi | 90% | 2382 fps | 99.1% |
| Lovex S062 | <<locked>> | 84% | 36,303 psi | 89% | 2346 fps | 97.6% |
| Norma 203B | <<locked>> | 84% | 35,984 psi | 89% | 2372 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 86% | 1604 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,882 psi | 88% | 2454 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 35,984 psi | 89% | 2316 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 88% | 35,592 psi | 88% | 2372 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 36,709 psi | 90% | 2382 fps | 99.1% |
| Shooters World Precision | <<locked>> | 84% | 36,303 psi | 89% | 2346 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 36,680 psi | 90% | 2293 fps | 99.8% |
| Somchem S355 | <<locked>> | 86% | 34,519 psi | 85% | 2333 fps | 96.2% |
| Somchem S365 | <<locked>> | 98% | 36,027 psi | 89% | 2454 fps | 98% |
| Vihtavuori N135 | <<locked>> | 82% | 34,722 psi | 86% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 35,404 psi | 87% | 2313 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 92% | 35,302 psi | 87% | 2333 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 82% | 35,027 psi | 86% | 2329 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,056 psi | 89% | 2346 fps | 96.4% |
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% | 32,053 psi | 79% | 2270 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 30,298 psi | 75% | 2251 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,849 psi | 74% | 2234 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 88% | 33,649 psi | 83% | 2385 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 31,053 psi | 76% | 2277 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,793 psi | 81% | 2313 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 30,719 psi | 76% | 2280 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,570 psi | 63% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 32,808 psi | 81% | 2267 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 32,314 psi | 80% | 2310 fps | 99.7% |
| IMR 4895 | <<locked>> | 80% | 32,982 psi | 81% | 2313 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 34,389 psi | 85% | 2336 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 31,966 psi | 79% | 2251 fps | 96.3% |
| Norma 203B | <<locked>> | 82% | 33,765 psi | 83% | 2323 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 63% | 1430 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,746 psi | 68% | 2234 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 34,069 psi | 84% | 2274 fps | 96.9% |
| Rottweil R 903 | 33.6 gr | 84% | 31,241 psi | 77% | 2274 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,389 psi | 85% | 2336 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 31,966 psi | 79% | 2251 fps | 96.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,661 psi | 76% | 2169 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 32,401 psi | 80% | 2283 fps | 95.5% |
| Somchem S365 | 37 gr | 92% | 29,965 psi | 74% | 2303 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 32,735 psi | 81% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,214 psi | 82% | 2267 fps | 99.1% |
| Vihtavuori N150 | 32 gr | 84% | 27,485 psi | 68% | 2149 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,895 psi | 81% | 2283 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,779 psi | 83% | 2293 fps | 95.5% |
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 51 powders for 7 x 72 R loaded with the .284 | 150gr | RWS Speed Tip Professional. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,454 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,454 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon TrailBoss, IMR 4831 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. Somchem S365, Rottweil R 903, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 150gr | RWS Speed Tip Professional they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2208, Alliant Power Pro 2000-MR 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.