Load Specifications
Load data in caliber 7 x 50 R with .284 | 139gr | Barnes LRX BT 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, ADI AR 2207 and Alliant Reloder-7.
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% | 45,295 psi | 86% | 2142 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 98% | 46,151 psi | 87% | 2139 fps | 96.8% |
| Accurate No. 11 FS | <<locked>> | 82% | 47,805 psi | 90% | 2149 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 46,673 psi | 88% | 2064 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 46,035 psi | 87% | 2224 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 44,933 psi | 85% | 2234 fps | 96.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 32,097 psi | 61% | 2064 fps | 97.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 39,929 psi | 75% | 2169 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 96% | 45,310 psi | 86% | 2182 fps | 99.4% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,470 psi | 88% | 2169 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 96% | 47,703 psi | 90% | 2169 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,457 psi | 56% | 1296 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,395 psi | 82% | 2159 fps | 99.4% |
| IMR 4227 | <<locked>> | 90% | 45,426 psi | 86% | 2129 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 46,862 psi | 89% | 2165 fps | 99.6% |
| Lovex S053 | <<locked>> | 92% | 46,659 psi | 88% | 2136 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 44,802 psi | 85% | 2231 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,645 psi | 54% | 1322 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 47,166 psi | 89% | 2195 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 46,862 psi | 89% | 2165 fps | 99.6% |
| Shooters World SOCOM | <<locked>> | 84% | 46,905 psi | 89% | 2146 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 45,281 psi | 86% | 1998 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 41,727 psi | 79% | 2165 fps | 96.7% |
| Vihtavuori N110 | <<locked>> | 86% | 46,064 psi | 87% | 2060 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 46,282 psi | 87% | 2188 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,841 psi | 73% | 2093 fps | 97.8% |
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% | 30,618 psi | 58% | 1906 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 94% | 40,596 psi | 77% | 2057 fps | 95.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 45,049 psi | 85% | 2113 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 41,510 psi | 78% | 1995 fps | 100% |
| ADI AR 2207 | 16.4 gr | 80% | 26,179 psi | 49% | 1890 fps | 98.1% |
| ADI AR 2219 | <<locked>> | 98% | 42,380 psi | 80% | 2195 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 96% | 28,239 psi | 53% | 1975 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 90% | 29,095 psi | 55% | 1972 fps | 95.4% |
| Alliant Reloder-7 | 16.9 gr | 80% | 27,499 psi | 52% | 1877 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 37,913 psi | 72% | 2044 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 92% | 42,540 psi | 80% | 2096 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,321 psi | 40% | 1152 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 27,818 psi | 53% | 1873 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 33,562 psi | 63% | 1946 fps | 98.8% |
| Lovex D060 | <<locked>> | 80% | 41,756 psi | 79% | 2090 fps | 99% |
| Lovex S053 | <<locked>> | 80% | 32,706 psi | 62% | 1932 fps | 100% |
| Norma 200 | <<locked>> | 84% | 26,977 psi | 51% | 1919 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,827 psi | 39% | 1178 fps | 100% |
| ReloadSwiss RS 36 | 17 gr | 80% | 32,213 psi | 61% | 1962 fps | 98.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,756 psi | 79% | 2090 fps | 99% |
| Shooters World SOCOM | <<locked>> | 80% | 41,133 psi | 78% | 2067 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,169 psi | 59% | 1804 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 37,130 psi | 70% | 2090 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 38,711 psi | 73% | 1969 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,556 psi | 50% | 1870 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 92% | 30,269 psi | 57% | 1942 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 26 powders for 7 x 50 R loaded with the .284 | 139gr | Barnes LRX BT. ADI AR 2219 delivers the highest muzzle velocity at 2,234 fps; across all powders the maximum-charge window runs from 1,296 fps to 2,234 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 139.0 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, ADI AR 2207, Alliant Reloder-7 rank at the top here: for 7 x 50 R with the .284 | 139gr | Barnes LRX BT 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.