Load Specifications
Load data in caliber 7 x 50 R with .284 | 132gr | Peregrine VLR-4 bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Alliant Reloder-7 and ADI AR 2207.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 45,121 psi | 85% | 2221 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 98% | 46,079 psi | 87% | 2215 fps | 96.5% |
| Accurate No. 11 FS | <<locked>> | 82% | 47,630 psi | 90% | 2228 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 46,180 psi | 87% | 2136 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 45,382 psi | 86% | 2300 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 44,991 psi | 85% | 2316 fps | 96% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 31,894 psi | 60% | 2133 fps | 96.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 39,247 psi | 74% | 2238 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 96% | 45,353 psi | 86% | 2264 fps | 99.3% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,209 psi | 87% | 2244 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 96% | 47,776 psi | 90% | 2251 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,312 psi | 55% | 1345 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,598 psi | 82% | 2244 fps | 99.3% |
| IMR 4227 | <<locked>> | 90% | 45,411 psi | 86% | 2211 fps | 99.9% |
| Lovex D060 | <<locked>> | 84% | 46,485 psi | 88% | 2244 fps | 99.4% |
| Lovex S053 | <<locked>> | 92% | 45,934 psi | 87% | 2208 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 44,527 psi | 84% | 2306 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,456 psi | 54% | 1375 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 46,644 psi | 88% | 2270 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 46,485 psi | 88% | 2244 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 84% | 46,572 psi | 88% | 2221 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 47,500 psi | 90% | 2100 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 41,655 psi | 79% | 2241 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 86% | 45,876 psi | 87% | 2139 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 45,687 psi | 86% | 2264 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,769 psi | 73% | 2169 fps | 97.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 30,530 psi | 58% | 1975 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 94% | 40,727 psi | 77% | 2136 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 45,078 psi | 85% | 2195 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 41,263 psi | 78% | 2070 fps | 100% |
| ADI AR 2207 | 17.1 gr | 80% | 26,020 psi | 49% | 1955 fps | 97.8% |
| ADI AR 2219 | <<locked>> | 98% | 41,916 psi | 79% | 2267 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 96% | 28,210 psi | 53% | 2044 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 90% | 28,964 psi | 55% | 2041 fps | 95% |
| Alliant Reloder-7 | 18.1 gr | 82% | 29,341 psi | 55% | 1985 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 40,553 psi | 77% | 2162 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 92% | 42,235 psi | 80% | 2169 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,495 psi | 41% | 1204 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 27,673 psi | 52% | 1939 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 33,446 psi | 63% | 2018 fps | 98.6% |
| Lovex D060 | <<locked>> | 80% | 41,568 psi | 79% | 2165 fps | 98.8% |
| Lovex S053 | <<locked>> | 80% | 32,648 psi | 62% | 2005 fps | 100% |
| Norma 200 | <<locked>> | 84% | 26,934 psi | 51% | 1988 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,972 psi | 40% | 1230 fps | 100% |
| ReloadSwiss RS 36 | 17.8 gr | 80% | 32,372 psi | 61% | 2041 fps | 98.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,568 psi | 79% | 2165 fps | 98.8% |
| Shooters World SOCOM | <<locked>> | 80% | 41,104 psi | 78% | 2142 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,937 psi | 58% | 1870 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 39,392 psi | 74% | 2205 fps | 95.8% |
| Vihtavuori N110 | <<locked>> | 80% | 38,290 psi | 72% | 2037 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,411 psi | 50% | 1936 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 92% | 30,472 psi | 58% | 2014 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 26 powders for 7 x 50 R loaded with the .284 | 132gr | Peregrine VLR-4. ADI AR 2219 delivers the highest muzzle velocity at 2,316 fps; across all powders the maximum-charge window runs from 1,345 fps to 2,316 fps. ADI AR 2219 gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 132.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2219, Alliant AR-Comp, Alliant Reloder-10x 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 36, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 7 x 50 R with the .284 | 132gr | Peregrine VLR-4 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.