Load Specifications
Load data in caliber 7 x 50 R with .284 | 160gr | Prvi Partizan PSP BT bullet and 43 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Hodgdon H335.
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% | 45,672 psi | 86% | 2031 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,874 psi | 83% | 2087 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 45,411 psi | 86% | 2123 fps | 97.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,937 psi | 60% | 1982 fps | 98.1% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,814 psi | 79% | 2113 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 92% | 46,311 psi | 87% | 2031 fps | 98.9% |
| Accurate LT-32 | <<locked>> | 92% | 46,862 psi | 89% | 2034 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 92% | 47,892 psi | 90% | 2103 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 45,948 psi | 87% | 2142 fps | 98.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,915 psi | 77% | 2110 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 47,543 psi | 90% | 2142 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 47,398 psi | 90% | 2080 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 47,137 psi | 89% | 2070 fps | 99.2% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 47,688 psi | 90% | 2100 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 98% | 47,239 psi | 89% | 2159 fps | 99% |
| Hodgdon H335 | <<locked>> | 96% | 45,034 psi | 85% | 2136 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 88% | 45,469 psi | 86% | 2031 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,241 psi | 59% | 1240 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,493 psi | 73% | 2083 fps | 98.3% |
| IMR 4198 | <<locked>> | 96% | 47,268 psi | 89% | 2090 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 46,209 psi | 87% | 2011 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 45,672 psi | 86% | 2110 fps | 96.3% |
| Lovex D073.5 | <<locked>> | 98% | 45,324 psi | 86% | 2119 fps | 96.4% |
| Lovex S053 | <<locked>> | 86% | 47,282 psi | 89% | 2005 fps | 100% |
| Norma 200 | <<locked>> | 92% | 45,498 psi | 86% | 2100 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 38,986 psi | 74% | 2051 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,256 psi | 59% | 1276 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 45,194 psi | 85% | 2037 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 47,050 psi | 89% | 2139 fps | 97.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,120 psi | 81% | 2080 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 92% | 46,905 psi | 89% | 2142 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 46,398 psi | 88% | 1870 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 46,108 psi | 87% | 2146 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 46,572 psi | 88% | 2116 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,178 psi | 82% | 2024 fps | 97.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 34,606 psi | 65% | 1906 fps | 96.1% |
| Somchem S321ᴾ | <<locked>> | 100% | 47,036 psi | 89% | 2162 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,408 psi | 78% | 2028 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 90% | 45,556 psi | 86% | 2037 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 46,166 psi | 87% | 2073 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,163 psi | 80% | 2031 fps | 99.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,534 psi | 65% | 1991 fps | 98.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 37,681 psi | 71% | 2005 fps | 96.5% |
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% | 37,507 psi | 71% | 1916 fps | 99.3% |
| Accurate 2015 | <<locked>> | 84% | 26,861 psi | 51% | 1798 fps | 95.7% |
| Accurate 2460 | <<locked>> | 90% | 34,635 psi | 65% | 1962 fps | 95% |
| Accurate 2495 | <<locked>> | 92% | 24,685 psi | 47% | 1834 fps | 95.5% |
| Accurate 2520 | <<locked>> | 96% | 36,405 psi | 69% | 2031 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 32,445 psi | 61% | 1818 fps | 95.9% |
| Accurate LT-32 | <<locked>> | 84% | 37,014 psi | 70% | 1890 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 33,402 psi | 63% | 1903 fps | 100% |
| ADI AR 2219 | 19.9 gr | 82% | 31,299 psi | 59% | 1900 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 22,263 psi | 42% | 1726 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,905 psi | 53% | 1824 fps | 97.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,911 psi | 66% | 1900 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,139 psi | 57% | 1804 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 96% | 42,003 psi | 79% | 2021 fps | 95% |
| Hodgdon H322 | <<locked>> | 86% | 32,590 psi | 62% | 1926 fps | 95.6% |
| Hodgdon H335 | 22.1 gr | 88% | 34,795 psi | 66% | 1975 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 35,810 psi | 68% | 1883 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,872 psi | 43% | 1106 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 28,834 psi | 54% | 1896 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 30,400 psi | 57% | 1824 fps | 98.7% |
| IMR 4227 | <<locked>> | 80% | 40,785 psi | 77% | 1942 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 42,525 psi | 80% | 2067 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 96% | 42,337 psi | 80% | 2080 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 40,205 psi | 76% | 1916 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,256 psi | 59% | 1880 fps | 98.9% |
| Norma 202 | <<locked>> | 96% | 34,606 psi | 65% | 1978 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,047 psi | 44% | 1138 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,118 psi | 76% | 1969 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 39,059 psi | 74% | 2024 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 92% | 34,592 psi | 65% | 1942 fps | 95% |
| Shooters World AR Plus | <<locked>> | 86% | 38,072 psi | 72% | 2014 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,289 psi | 70% | 1762 fps | 100% |
| SNPE Vectan SP 10 | 21.6 gr | 86% | 35,592 psi | 67% | 1985 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 28,689 psi | 54% | 1818 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 36,172 psi | 68% | 1919 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 32,851 psi | 62% | 1877 fps | 95.5% |
| Somchem S321 | <<locked>> | 98% | 43,990 psi | 83% | 2119 fps | 95.3% |
| Somchem S335 | <<locked>> | 92% | 32,793 psi | 62% | 1890 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 33,634 psi | 64% | 1877 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,035 psi | 51% | 1762 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 26,658 psi | 50% | 1755 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 90% | 25,817 psi | 49% | 1811 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 98% | 35,317 psi | 67% | 1965 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 43 powders for 7 x 50 R loaded with the .284 | 160gr | Prvi Partizan PSP BT. Somchem S321 delivers the highest muzzle velocity at 2,162 fps; across all powders the maximum-charge window runs from 1,240 fps to 2,162 fps. Accurate 2015 gives the best case fill at 100 %, and 43 of the 43 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 160.0 gr projectile in 0.284" calls for a 1:11.5 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. ADI AR 2219, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for 7 x 50 R with the .284 | 160gr | Prvi Partizan PSP BT they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss 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.