Load Specifications
Load data in caliber 7 x 50 R with .284 | 168gr | Sierra MatchKing bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Hodgdon H322 and SNPE Vectan SP 10.
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>> | 86% | 46,586 psi | 88% | 1978 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,556 psi | 84% | 2031 fps | 99.8% |
| Accurate 2460 | <<locked>> | 98% | 46,340 psi | 88% | 2073 fps | 98.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,677 psi | 62% | 1936 fps | 98.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,830 psi | 81% | 2064 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 92% | 47,050 psi | 89% | 1978 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 92% | 47,601 psi | 90% | 1985 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 90% | 46,151 psi | 87% | 2014 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 47,239 psi | 89% | 2093 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,510 psi | 78% | 2057 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 47,297 psi | 89% | 2149 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 96% | 46,093 psi | 87% | 2057 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 45,107 psi | 85% | 1988 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 47,848 psi | 90% | 2014 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 98% | 45,223 psi | 85% | 2008 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 96% | 45,324 psi | 86% | 2070 fps | 99% |
| Hodgdon H335 | <<locked>> | 96% | 45,818 psi | 87% | 2083 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 88% | 46,137 psi | 87% | 1978 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,343 psi | 59% | 1201 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,537 psi | 75% | 2041 fps | 98.8% |
| IMR 4198 | <<locked>> | 94% | 45,455 psi | 86% | 2001 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 46,572 psi | 88% | 1952 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 47,688 psi | 90% | 2087 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 98% | 46,398 psi | 88% | 2073 fps | 97% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 37,449 psi | 71% | 1998 fps | 95.9% |
| Lovex S053 | <<locked>> | 84% | 45,759 psi | 86% | 1923 fps | 100% |
| Norma 200 | <<locked>> | 92% | 45,948 psi | 87% | 2041 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,161 psi | 76% | 2011 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,430 psi | 59% | 1234 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 45,832 psi | 87% | 1982 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 47,790 psi | 90% | 2083 fps | 97.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,237 psi | 84% | 2034 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 92% | 47,688 psi | 90% | 2087 fps | 97.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 37,449 psi | 71% | 1998 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 47,166 psi | 89% | 1818 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 46,920 psi | 89% | 2093 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 46,978 psi | 89% | 2057 fps | 99.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,266 psi | 84% | 1978 fps | 97.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,462 psi | 67% | 1867 fps | 96.8% |
| Somchem S321 | <<locked>> | 98% | 44,991 psi | 85% | 2073 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,032 psi | 79% | 1975 fps | 98.3% |
| Vihtavuori N120 | <<locked>> | 90% | 46,282 psi | 87% | 1978 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 47,224 psi | 89% | 2021 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,221 psi | 82% | 1985 fps | 99.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,520 psi | 67% | 1949 fps | 98.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,203 psi | 72% | 1955 fps | 97.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 36,492 psi | 69% | 1946 fps | 96% |
| Winchester 748ᴾ | <<locked>> | 100% | 42,902 psi | 81% | 2064 fps | 96% |
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% | 38,580 psi | 73% | 1873 fps | 99.6% |
| Accurate 2015 | <<locked>> | 80% | 24,424 psi | 46% | 1690 fps | 95.1% |
| Accurate 2460 | <<locked>> | 88% | 33,228 psi | 63% | 1883 fps | 95.1% |
| Accurate 2495 | <<locked>> | 90% | 23,656 psi | 45% | 1755 fps | 95.5% |
| Accurate 2520 | <<locked>> | 94% | 34,693 psi | 66% | 1942 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 33,156 psi | 63% | 1775 fps | 96.5% |
| Accurate LT-32 | <<locked>> | 82% | 35,447 psi | 67% | 1808 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 34,272 psi | 65% | 1857 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 30,168 psi | 57% | 1821 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 22,858 psi | 43% | 1693 fps | 96.7% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 44,077 psi | 83% | 2106 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,210 psi | 53% | 1778 fps | 97.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,781 psi | 68% | 1857 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,038 psi | 59% | 1768 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 94% | 40,248 psi | 76% | 1936 fps | 95% |
| Hodgdon H322 | 19.3 gr | 84% | 31,401 psi | 59% | 1847 fps | 95.7% |
| Hodgdon H335 | 21.1 gr | 86% | 33,402 psi | 63% | 1893 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 36,622 psi | 69% | 1841 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,279 psi | 44% | 1073 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 27,514 psi | 52% | 1811 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 30,951 psi | 58% | 1778 fps | 99.1% |
| IMR 4227 | <<locked>> | 80% | 41,582 psi | 79% | 1890 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 36,405 psi | 69% | 1929 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 94% | 40,335 psi | 76% | 1991 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 98% | 35,375 psi | 67% | 1965 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 40,915 psi | 77% | 1864 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,155 psi | 61% | 1837 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 33,243 psi | 63% | 1896 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,003 psi | 43% | 1099 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,060 psi | 78% | 1919 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 37,449 psi | 71% | 1939 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 90% | 33,054 psi | 62% | 1857 fps | 95% |
| Shooters World AR Plus | <<locked>> | 84% | 36,405 psi | 69% | 1929 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 98% | 35,375 psi | 67% | 1965 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,305 psi | 72% | 1716 fps | 100% |
| SNPE Vectan SP 10 | 20.6 gr | 84% | 34,113 psi | 64% | 1900 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,327 psi | 55% | 1778 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 34,940 psi | 66% | 1844 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 31,401 psi | 59% | 1798 fps | 95.5% |
| Somchem S321 | <<locked>> | 96% | 42,047 psi | 79% | 2034 fps | 95.3% |
| Somchem S335 | <<locked>> | 88% | 29,776 psi | 56% | 1778 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 34,461 psi | 65% | 1827 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,688 psi | 52% | 1722 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 25,585 psi | 48% | 1680 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 88% | 24,976 psi | 47% | 1739 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 94% | 31,807 psi | 60% | 1847 fps | 95% |
| Vihtavuori N540 | <<locked>> | 98% | 34,621 psi | 65% | 1913 fps | 95.4% |
| Winchester 748 | <<locked>> | 98% | 40,176 psi | 76% | 2021 fps | 95.2% |
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 48 powders for 7 x 50 R loaded with the .284 | 168gr | Sierra MatchKing. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,149 fps; across all powders the maximum-charge window runs from 1,201 fps to 2,149 fps. Accurate 2015 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. Hodgdon H335, Hodgdon H322, SNPE Vectan SP 10 rank at the top here: for 7 x 50 R with the .284 | 168gr | Sierra MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.