Load Specifications
Load data in caliber 7 x 50 R with .284 | 127gr | Geco ZERO LG bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Accurate 1680 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>> | 96% | 47,630 psi | 90% | 2264 fps | 98.3% |
| Accurate No. 11 FS | <<locked>> | 84% | 47,471 psi | 90% | 2244 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 46,151 psi | 87% | 2152 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 43,613 psi | 82% | 2297 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 35,491 psi | 67% | 2188 fps | 96.2% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 46,615 psi | 88% | 2297 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,514 psi | 54% | 1345 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 40,132 psi | 76% | 2198 fps | 98% |
| IMR 4227 | <<locked>> | 94% | 47,326 psi | 89% | 2251 fps | 99.8% |
| Lovex D060 | <<locked>> | 86% | 46,282 psi | 87% | 2251 fps | 98.9% |
| Lovex D063 | <<locked>> | 82% | 45,165 psi | 85% | 2228 fps | 98.8% |
| Lovex S053 | <<locked>> | 96% | 47,558 psi | 90% | 2251 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 40,350 psi | 76% | 2264 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,644 psi | 52% | 1371 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 45,847 psi | 87% | 2277 fps | 99.7% |
| Shooters World Blackout | <<locked>> | 82% | 45,165 psi | 85% | 2228 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 46,282 psi | 87% | 2251 fps | 98.9% |
| Shooters World SOCOM | <<locked>> | 86% | 46,050 psi | 87% | 2228 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 46,340 psi | 88% | 2110 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 45,020 psi | 85% | 2152 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 44,019 psi | 83% | 2264 fps | 100% |
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 | 19.4 gr | 86% | 33,953 psi | 64% | 2051 fps | 95.2% |
| Accurate No. 11 FS | <<locked>> | 80% | 41,524 psi | 78% | 2162 fps | 99.9% |
| ADI AR 2205 | <<locked>> | 80% | 38,638 psi | 73% | 2047 fps | 100% |
| ADI AR 2207 | 16.2 gr | 80% | 23,728 psi | 45% | 1909 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 33,417 psi | 63% | 2149 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 88% | 32,227 psi | 61% | 2060 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,508 psi | 39% | 1194 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 30,487 psi | 58% | 2011 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 30,821 psi | 58% | 1978 fps | 97.1% |
| Lovex D060 | <<locked>> | 80% | 38,885 psi | 73% | 2133 fps | 97.6% |
| Lovex D063 | <<locked>> | 80% | 42,554 psi | 80% | 2188 fps | 98.4% |
| Lovex S053 | <<locked>> | 80% | 29,892 psi | 56% | 1969 fps | 99.4% |
| Norma 200 | <<locked>> | 90% | 29,341 psi | 55% | 2060 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,957 psi | 38% | 1220 fps | 100% |
| ReloadSwiss RS 36 | 16.8 gr | 80% | 29,356 psi | 55% | 1991 fps | 96.5% |
| Shooters World Blackout | <<locked>> | 80% | 42,554 psi | 80% | 2188 fps | 98.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 38,885 psi | 73% | 2133 fps | 97.6% |
| Shooters World SOCOM | <<locked>> | 80% | 38,043 psi | 72% | 2106 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 28,572 psi | 54% | 1850 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 35,433 psi | 67% | 2018 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 24,192 psi | 46% | 1893 fps | 97.3% |
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 35 powders for 7 x 50 R loaded with the .284 | 127gr | Geco ZERO LG. ADI AR 2207 delivers the highest muzzle velocity at 2,297 fps; across all powders the maximum-charge window runs from 1,345 fps to 2,297 fps. Accurate 2015 gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate LT-30, Accurate LT-32 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, Accurate 1680, ADI AR 2207 rank at the top here: for 7 x 50 R with the .284 | 127gr | Geco ZERO LG they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2015, Accurate LT-32, ADI AR 2219 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.