Load Specifications
Load data in caliber 7 x 72 R with .284 | 145gr | Peregrine Glider GRM bullet and 33 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% | 34,577 psi | 85% | 2369 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 34,954 psi | 86% | 2398 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 82% | 35,723 psi | 88% | 2398 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 34,708 psi | 85% | 2385 fps | 96.2% |
| Bofors RP3 | <<locked>> | 90% | 36,448 psi | 90% | 2434 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,896 psi | 86% | 2392 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 35,708 psi | 88% | 2385 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 36,100 psi | 89% | 2441 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,736 psi | 83% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 36,709 psi | 90% | 2388 fps | 96.2% |
| IMR 3031 | <<locked>> | 84% | 36,347 psi | 90% | 2438 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 35,317 psi | 87% | 2395 fps | 98.4% |
| Lovex S062 | <<locked>> | 86% | 35,143 psi | 87% | 2359 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 36,738 psi | 90% | 2375 fps | 97.2% |
| Norma 202 | <<locked>> | 82% | 34,447 psi | 85% | 2349 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,026 psi | 84% | 1614 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 34,911 psi | 86% | 2457 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 35,027 psi | 86% | 2333 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 92% | 36,347 psi | 90% | 2425 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 35,317 psi | 87% | 2395 fps | 98.4% |
| Shooters World Precision | <<locked>> | 86% | 35,143 psi | 87% | 2359 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 36,622 psi | 90% | 2310 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 35,868 psi | 88% | 2313 fps | 99.5% |
| Somchem S335 | <<locked>> | 82% | 36,027 psi | 89% | 2316 fps | 99.4% |
| Somchem S355 | <<locked>> | 90% | 35,317 psi | 87% | 2385 fps | 95.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,664 psi | 85% | 2454 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 82% | 36,637 psi | 90% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 35,795 psi | 88% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 34,867 psi | 86% | 2336 fps | 99% |
| Vihtavuori N150 | <<locked>> | 92% | 36,114 psi | 89% | 2379 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 86% | 35,824 psi | 88% | 2372 fps | 98.8% |
| Winchester 748 | <<locked>> | 82% | 36,085 psi | 89% | 2418 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 35,215 psi | 87% | 2385 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% | 28,152 psi | 69% | 2228 fps | 99.4% |
| Accurate 4064 | 30.7 gr | 80% | 26,716 psi | 66% | 2205 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 33,257 psi | 82% | 2352 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 32,735 psi | 81% | 2339 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 31,720 psi | 78% | 2333 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 32,619 psi | 80% | 2343 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 80% | 33,402 psi | 82% | 2333 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 33,866 psi | 83% | 2388 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,034 psi | 62% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,374 psi | 85% | 2336 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,836 psi | 78% | 2339 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 30,734 psi | 76% | 2293 fps | 97.1% |
| Lovex S062 | <<locked>> | 82% | 30,966 psi | 76% | 2264 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 32,401 psi | 80% | 2280 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 32,460 psi | 80% | 2303 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,077 psi | 62% | 1440 fps | 100% |
| ReloadSwiss RS 60 | 35.4 gr | 86% | 30,719 psi | 76% | 2349 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 30,632 psi | 75% | 2234 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 33,895 psi | 83% | 2372 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,734 psi | 76% | 2293 fps | 97.1% |
| Shooters World Precision | <<locked>> | 82% | 30,966 psi | 76% | 2264 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,505 psi | 85% | 2267 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,920 psi | 69% | 2139 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 33,721 psi | 83% | 2270 fps | 99% |
| Somchem S355 | <<locked>> | 88% | 33,301 psi | 82% | 2343 fps | 95.1% |
| Somchem S365 | <<locked>> | 98% | 32,460 psi | 80% | 2398 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 34,490 psi | 85% | 2277 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 29,399 psi | 72% | 2241 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 30,443 psi | 75% | 2241 fps | 98% |
| Vihtavuori N150 | 33.4 gr | 86% | 29,704 psi | 73% | 2238 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 29,124 psi | 72% | 2224 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 33,460 psi | 82% | 2362 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 32,996 psi | 81% | 2336 fps | 95% |
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 59 powders for 7 x 72 R loaded with the .284 | 145gr | Peregrine Glider GRM. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,480 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,480 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 59 of the 59 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 145.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, 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, Accurate 4064, Vihtavuori N150 rank at the top here: for 7 x 72 R with the .284 | 145gr | Peregrine Glider GRM 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.