Load Specifications
Load data in caliber 7 x 50 R with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Alliant Reloder-7 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% | 46,398 psi | 88% | 2313 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 98% | 46,702 psi | 88% | 2300 fps | 96.3% |
| ADI AR 2205 | <<locked>> | 84% | 47,036 psi | 89% | 2224 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 46,369 psi | 88% | 2395 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 45,745 psi | 86% | 2405 fps | 95.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 32,634 psi | 62% | 2215 fps | 96.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,741 psi | 77% | 2336 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 96% | 46,253 psi | 87% | 2356 fps | 99.2% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,731 psi | 88% | 2329 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,544 psi | 56% | 1401 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,483 psi | 84% | 2336 fps | 99.2% |
| IMR 4227 | <<locked>> | 90% | 46,151 psi | 87% | 2300 fps | 99.9% |
| Lovex D060 | <<locked>> | 84% | 47,311 psi | 89% | 2336 fps | 99.4% |
| Lovex S053 | <<locked>> | 92% | 46,775 psi | 88% | 2300 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 46,064 psi | 87% | 2408 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,327 psi | 55% | 1440 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 47,688 psi | 90% | 2365 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 47,311 psi | 89% | 2336 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 84% | 47,587 psi | 90% | 2313 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 46,035 psi | 87% | 2159 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 42,351 psi | 80% | 2329 fps | 96.2% |
| Vihtavuori N110 | <<locked>> | 86% | 46,717 psi | 88% | 2228 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 46,615 psi | 88% | 2356 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 39,581 psi | 75% | 2254 fps | 97.4% |
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% | 31,343 psi | 59% | 2054 fps | 95% |
| Accurate LT-30 | <<locked>> | 94% | 41,582 psi | 79% | 2221 fps | 95.1% |
| ADI AR 2205 | <<locked>> | 80% | 41,756 psi | 79% | 2149 fps | 100% |
| ADI AR 2207 | 17.8 gr | 80% | 26,847 psi | 51% | 2037 fps | 97.7% |
| ADI AR 2219 | <<locked>> | 98% | 42,888 psi | 81% | 2356 fps | 95% |
| Alliant AR-Comp | <<locked>> | 96% | 29,066 psi | 55% | 2129 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 92% | 31,894 psi | 60% | 2172 fps | 95.7% |
| Alliant Reloder-7 | 18.9 gr | 82% | 30,414 psi | 57% | 2073 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 41,307 psi | 78% | 2247 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,625 psi | 41% | 1250 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 30,182 psi | 57% | 2060 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 34,127 psi | 64% | 2100 fps | 98.5% |
| Lovex D060 | <<locked>> | 80% | 42,061 psi | 79% | 2251 fps | 98.7% |
| Lovex S053 | <<locked>> | 80% | 33,547 psi | 63% | 2090 fps | 99.9% |
| Norma 200 | <<locked>> | 84% | 28,152 psi | 53% | 2077 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,161 psi | 40% | 1276 fps | 100% |
| ReloadSwiss RS 36 | 18.5 gr | 80% | 32,938 psi | 62% | 2119 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 42,061 psi | 79% | 2251 fps | 98.7% |
| Shooters World SOCOM | <<locked>> | 80% | 41,684 psi | 79% | 2228 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,560 psi | 60% | 1949 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 40,176 psi | 76% | 2290 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 39,407 psi | 74% | 2129 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 27,166 psi | 51% | 2014 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 94% | 33,330 psi | 63% | 2139 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 24 powders for 7 x 50 R loaded with the .284 | 125gr | Lehigh Defense Controlled Chaos. Norma 200 delivers the highest muzzle velocity at 2,408 fps; across all powders the maximum-charge window runs from 1,401 fps to 2,408 fps. ADI AR 2219 gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.0 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. ADI AR 2207, Alliant Reloder-7, ReloadSwiss RS 36 rank at the top here: for 7 x 50 R with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.