Load Specifications
Load data in caliber 7 x 72 R with .284 | 153gr | Peregrine Glider GRM bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Bofors RP3 and Accurate 4064.
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% | 35,708 psi | 88% | 2316 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 36,129 psi | 89% | 2339 fps | 98.9% |
| Accurate 4064 | <<locked>> | 88% | 35,810 psi | 88% | 2343 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 82% | 36,100 psi | 89% | 2316 fps | 96% |
| Alliant AR-Comp | <<locked>> | 82% | 36,695 psi | 90% | 2339 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 35,810 psi | 88% | 2336 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,708 psi | 88% | 2398 fps | 96% |
| Bofors RP3 | <<locked>> | 88% | 34,882 psi | 86% | 2333 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,013 psi | 89% | 2346 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 36,332 psi | 89% | 2326 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 34,882 psi | 86% | 2346 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,866 psi | 83% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 34,896 psi | 86% | 2280 fps | 96.2% |
| IMR 3031 | <<locked>> | 86% | 36,347 psi | 90% | 2362 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 34,954 psi | 86% | 2326 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 84% | 36,448 psi | 90% | 2346 fps | 99% |
| Lovex S062 | <<locked>> | 86% | 36,071 psi | 89% | 2310 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 35,447 psi | 87% | 2280 fps | 97.3% |
| Norma 202 | <<locked>> | 82% | 35,302 psi | 87% | 2293 fps | 99.2% |
| Norma 203B | <<locked>> | 86% | 35,911 psi | 88% | 2339 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,200 psi | 84% | 1562 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 35,766 psi | 88% | 2411 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 84% | 35,578 psi | 88% | 2277 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 90% | 34,809 psi | 86% | 2323 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 36,448 psi | 90% | 2346 fps | 99% |
| Shooters World Precision | <<locked>> | 86% | 36,071 psi | 89% | 2310 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 34,592 psi | 85% | 2218 fps | 99.6% |
| Somchem S355 | <<locked>> | 90% | 36,434 psi | 90% | 2339 fps | 96.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,447 psi | 87% | 2405 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 35,099 psi | 86% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 34,534 psi | 85% | 2280 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 35,259 psi | 87% | 2277 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 94% | 34,780 psi | 86% | 2287 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 34,925 psi | 86% | 2293 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,129 psi | 89% | 2310 fps | 96.2% |
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% | 28,964 psi | 71% | 2178 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 33,678 psi | 83% | 2290 fps | 98.4% |
| Accurate 4064 | 30 gr | 80% | 27,456 psi | 68% | 2156 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 80% | 34,040 psi | 84% | 2270 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 34,403 psi | 85% | 2300 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 31,459 psi | 77% | 2241 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 33,446 psi | 82% | 2343 fps | 95.1% |
| Bofors RP3 | 32.6 gr | 84% | 30,530 psi | 75% | 2238 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,591 psi | 83% | 2297 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 80% | 34,200 psi | 84% | 2280 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 30,530 psi | 75% | 2241 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,961 psi | 61% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 32,605 psi | 80% | 2231 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 30,066 psi | 74% | 2228 fps | 99.4% |
| IMR 4895 | <<locked>> | 82% | 32,663 psi | 80% | 2274 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 31,662 psi | 78% | 2247 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 29,617 psi | 73% | 2165 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 33,112 psi | 82% | 2231 fps | 96.6% |
| Norma 202 | <<locked>> | 80% | 33,214 psi | 82% | 2251 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 33,518 psi | 83% | 2287 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,048 psi | 62% | 1391 fps | 100% |
| ReloadSwiss RS 60 | 33.8 gr | 84% | 29,428 psi | 72% | 2251 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 31,589 psi | 78% | 2188 fps | 96% |
| Rottweil R 903 | <<locked>> | 88% | 32,692 psi | 81% | 2280 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,662 psi | 78% | 2247 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 29,617 psi | 73% | 2165 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,500 psi | 70% | 2090 fps | 98.3% |
| Somchem S355 | <<locked>> | 86% | 32,039 psi | 79% | 2244 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 29,283 psi | 72% | 2254 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 32,996 psi | 81% | 2178 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,110 psi | 74% | 2188 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 30,966 psi | 76% | 2185 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 88% | 28,718 psi | 71% | 2152 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 30,472 psi | 75% | 2198 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 33,910 psi | 84% | 2260 fps | 95.3% |
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 61 powders for 7 x 72 R loaded with the .284 | 153gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,411 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,411 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 61 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 153.0 gr projectile in 0.284" calls for a 1:8.0 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. ReloadSwiss RS 60, Bofors RP3, Accurate 4064 rank at the top here: for 7 x 72 R with the .284 | 153gr | 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.