Load Specifications
Load data in caliber 7 x 50 R with .284 | 140gr | Sierra GameKing bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, 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>> | 90% | 46,441 psi | 88% | 2178 fps | 99.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 37,913 psi | 72% | 2139 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 96% | 47,239 psi | 89% | 2175 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 96% | 47,863 psi | 90% | 2178 fps | 95.7% |
| ADI AR 2205 | <<locked>> | 82% | 47,181 psi | 89% | 2087 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 47,413 psi | 90% | 2257 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 46,354 psi | 88% | 2280 fps | 97.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 35,766 psi | 68% | 2159 fps | 98.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 44,266 psi | 84% | 2251 fps | 99.4% |
| Alliant Reloder-7 | <<locked>> | 94% | 47,123 psi | 89% | 2224 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 47,485 psi | 90% | 2208 fps | 98% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 44,512 psi | 84% | 2254 fps | 96.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 45,136 psi | 85% | 2270 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 92% | 46,441 psi | 88% | 2175 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,603 psi | 58% | 1325 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 47,369 psi | 89% | 2238 fps | 99.9% |
| IMR 4227 | <<locked>> | 88% | 46,775 psi | 88% | 2165 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 47,514 psi | 90% | 2198 fps | 99.8% |
| Lovex S053 | <<locked>> | 90% | 47,587 psi | 90% | 2162 fps | 100% |
| Norma 200 | <<locked>> | 98% | 47,659 psi | 90% | 2280 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,921 psi | 57% | 1352 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 45,861 psi | 87% | 2195 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 47,514 psi | 90% | 2198 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 82% | 47,152 psi | 89% | 2169 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 46,412 psi | 88% | 2021 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 46,035 psi | 87% | 2280 fps | 96.2% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 45,614 psi | 86% | 2244 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 84% | 47,659 psi | 90% | 2090 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 47,587 psi | 90% | 2218 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 42,772 psi | 81% | 2169 fps | 98.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 37,217 psi | 70% | 2083 fps | 96.8% |
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% | 33,765 psi | 64% | 1982 fps | 97.2% |
| Accurate 2015 | <<locked>> | 94% | 31,633 psi | 60% | 2028 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 88% | 37,260 psi | 70% | 2024 fps | 95.4% |
| Accurate LT-32 | <<locked>> | 94% | 44,817 psi | 85% | 2136 fps | 95% |
| ADI AR 2205 | <<locked>> | 80% | 44,121 psi | 83% | 2047 fps | 100% |
| ADI AR 2207 | 17.4 gr | 80% | 29,037 psi | 55% | 1959 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 92% | 37,898 psi | 72% | 2146 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 90% | 26,426 psi | 50% | 1949 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 27,311 psi | 52% | 1942 fps | 95.3% |
| Alliant Reloder-7 | 18 gr | 80% | 30,676 psi | 58% | 1952 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 36,956 psi | 70% | 2051 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 96% | 39,450 psi | 75% | 2172 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 98% | 42,250 psi | 80% | 2224 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 86% | 38,551 psi | 73% | 2054 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,336 psi | 42% | 1178 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 27,064 psi | 51% | 1870 fps | 95.8% |
| IMR 4227 | <<locked>> | 80% | 36,898 psi | 70% | 2021 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 44,440 psi | 84% | 2152 fps | 99.6% |
| Lovex S053 | <<locked>> | 80% | 35,752 psi | 68% | 1991 fps | 100% |
| Norma 200 | 18.2 gr | 80% | 26,934 psi | 51% | 1923 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,944 psi | 41% | 1204 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 35,476 psi | 67% | 2034 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 44,440 psi | 84% | 2152 fps | 99.6% |
| Shooters World SOCOM | <<locked>> | 80% | 44,672 psi | 84% | 2136 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,837 psi | 64% | 1854 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 43,091 psi | 81% | 2238 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 33,939 psi | 64% | 2051 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 42,467 psi | 80% | 2024 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,312 psi | 55% | 1936 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 28,558 psi | 54% | 1916 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 96% | 33,504 psi | 63% | 2018 fps | 95.7% |
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 50 R loaded with the .284 | 140gr | Sierra GameKing. ADI AR 2219 delivers the highest muzzle velocity at 2,280 fps; across all powders the maximum-charge window runs from 1,325 fps to 2,280 fps. Accurate 2015 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 (365 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. Norma 200, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 7 x 50 R with the .284 | 140gr | Sierra GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2495, Accurate 2520, Alliant Power Pro 1200-R 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.