Load Specifications
Load data in caliber 7 x 50 R with .284 | 142gr | Lehigh Defense Controlled Chaos bullet and 29 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and ReloadSwiss RS 36.
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% | 47,848 psi | 90% | 2156 fps | 99.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 36,114 psi | 68% | 2070 fps | 96.7% |
| Accurate LT-30 | <<locked>> | 96% | 45,310 psi | 86% | 2106 fps | 97% |
| ADI AR 2205 | <<locked>> | 82% | 45,788 psi | 86% | 2028 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 45,614 psi | 86% | 2192 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 47,442 psi | 90% | 2251 fps | 97.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,360 psi | 65% | 2090 fps | 98.4% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,250 psi | 80% | 2178 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 94% | 45,600 psi | 86% | 2162 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 45,658 psi | 86% | 2139 fps | 97.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 42,931 psi | 81% | 2185 fps | 96.2% |
| Hodgdon H4198 | <<locked>> | 94% | 47,543 psi | 90% | 2146 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,182 psi | 57% | 1289 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 45,847 psi | 87% | 2172 fps | 99.8% |
| IMR 4227 | <<locked>> | 88% | 45,353 psi | 86% | 2106 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 46,006 psi | 87% | 2133 fps | 99.7% |
| Lovex S053 | <<locked>> | 90% | 46,151 psi | 87% | 2103 fps | 100% |
| Norma 200 | <<locked>> | 98% | 45,498 psi | 86% | 2211 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,515 psi | 56% | 1316 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 46,572 psi | 88% | 2162 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 46,006 psi | 87% | 2133 fps | 99.7% |
| Shooters World SOCOM | <<locked>> | 82% | 46,079 psi | 87% | 2113 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 47,282 psi | 89% | 1995 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 47,166 psi | 89% | 2251 fps | 96.1% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,309 psi | 84% | 2182 fps | 97.6% |
| Vihtavuori N110 | <<locked>> | 84% | 46,267 psi | 87% | 2034 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 45,803 psi | 87% | 2159 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 41,495 psi | 78% | 2110 fps | 98.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 36,114 psi | 68% | 2024 fps | 96.2% |
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% | 32,358 psi | 61% | 1916 fps | 96.5% |
| Accurate 2015 | <<locked>> | 96% | 32,111 psi | 61% | 1998 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 90% | 37,913 psi | 72% | 1995 fps | 95.2% |
| ADI AR 2205 | <<locked>> | 80% | 43,265 psi | 82% | 1998 fps | 100% |
| ADI AR 2207 | 16.6 gr | 80% | 28,094 psi | 53% | 1906 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 94% | 39,537 psi | 75% | 2133 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 92% | 27,195 psi | 51% | 1932 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 86% | 27,789 psi | 52% | 1916 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 29,936 psi | 57% | 1903 fps | 96.5% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 38,029 psi | 72% | 2028 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 98% | 40,030 psi | 76% | 2139 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 88% | 39,682 psi | 75% | 2031 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,133 psi | 42% | 1152 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 26,252 psi | 50% | 1814 fps | 95.1% |
| IMR 4227 | <<locked>> | 80% | 35,853 psi | 68% | 1965 fps | 99.4% |
| Lovex D060 | <<locked>> | 80% | 43,482 psi | 82% | 2096 fps | 99.4% |
| Lovex S053 | <<locked>> | 80% | 34,635 psi | 65% | 1939 fps | 100% |
| Norma 200 | 17.4 gr | 80% | 26,165 psi | 49% | 1870 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,727 psi | 41% | 1178 fps | 100% |
| ReloadSwiss RS 36 | 17.3 gr | 80% | 34,592 psi | 65% | 1982 fps | 99.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,482 psi | 82% | 2096 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 80% | 42,917 psi | 81% | 2070 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,011 psi | 62% | 1808 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 43,990 psi | 83% | 2208 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 34,896 psi | 66% | 2028 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 40,973 psi | 77% | 1969 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,413 psi | 54% | 1883 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 88% | 29,182 psi | 55% | 1893 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 98% | 34,214 psi | 65% | 1991 fps | 95.6% |
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 49 powders for 7 x 50 R loaded with the .284 | 142gr | Lehigh Defense Controlled Chaos. ADI AR 2219 delivers the highest muzzle velocity at 2,251 fps; across all powders the maximum-charge window runs from 1,289 fps to 2,251 fps. Accurate 2015 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.284" calls for a 1:9.5 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. ADI AR 2207, Norma 200, ReloadSwiss RS 36 rank at the top here: for 7 x 50 R with the .284 | 142gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2460, Accurate 2495, Accurate 2520 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.