Load Specifications
Load data in caliber 7 x 50 R with .284 | 145gr | Prvi Partizan SP bullet and 41 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 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% | 45,411 psi | 86% | 2175 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,497 psi | 82% | 2228 fps | 99.3% |
| Accurate 2460 | <<locked>> | 98% | 45,310 psi | 86% | 2270 fps | 97.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,807 psi | 60% | 2116 fps | 97.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,466 psi | 78% | 2254 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 92% | 46,122 psi | 87% | 2175 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 92% | 46,659 psi | 88% | 2178 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 90% | 45,107 psi | 85% | 2221 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 46,006 psi | 87% | 2293 fps | 98.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,393 psi | 76% | 2254 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 47,529 psi | 90% | 2297 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 46,760 psi | 88% | 2224 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 46,775 psi | 88% | 2211 fps | 98.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 46,920 psi | 89% | 2238 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 98% | 47,195 psi | 89% | 2310 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 98% | 47,819 psi | 90% | 2326 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 88% | 45,223 psi | 85% | 2172 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,256 psi | 59% | 1342 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,566 psi | 73% | 2231 fps | 97.8% |
| IMR 4198 | <<locked>> | 96% | 47,355 psi | 89% | 2244 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 45,629 psi | 86% | 2156 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 46,688 psi | 88% | 2290 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 98% | 44,976 psi | 85% | 2264 fps | 95.7% |
| Lovex S053 | <<locked>> | 86% | 47,297 psi | 89% | 2156 fps | 100% |
| Norma 200 | <<locked>> | 92% | 45,150 psi | 85% | 2247 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 38,841 psi | 73% | 2192 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,169 psi | 59% | 1378 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 45,252 psi | 85% | 2188 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 46,688 psi | 88% | 2283 fps | 96.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,308 psi | 82% | 2228 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 92% | 46,688 psi | 88% | 2290 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 45,788 psi | 86% | 2008 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 45,774 psi | 86% | 2290 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 46,093 psi | 87% | 2264 fps | 99.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,497 psi | 82% | 2172 fps | 96.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,379 psi | 78% | 2172 fps | 97.4% |
| Vihtavuori N120 | <<locked>> | 90% | 45,295 psi | 86% | 2185 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 46,093 psi | 87% | 2221 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,438 psi | 80% | 2178 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,722 psi | 66% | 2133 fps | 97.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 37,507 psi | 71% | 2142 fps | 95.8% |
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% | 37,362 psi | 71% | 2054 fps | 99% |
| Accurate 2015 | <<locked>> | 86% | 28,326 psi | 54% | 1959 fps | 95.6% |
| Accurate 2460 | <<locked>> | 92% | 37,028 psi | 70% | 2142 fps | 95.1% |
| Accurate 2495 | <<locked>> | 94% | 26,063 psi | 49% | 1991 fps | 95.4% |
| Accurate 2520 | <<locked>> | 98% | 38,914 psi | 74% | 2211 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 32,430 psi | 61% | 1946 fps | 95.2% |
| Accurate LT-32 | <<locked>> | 86% | 39,465 psi | 75% | 2067 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 33,127 psi | 63% | 2037 fps | 100% |
| ADI AR 2219 | 22.2 gr | 84% | 33,446 psi | 63% | 2077 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 82% | 23,612 psi | 45% | 1886 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,586 psi | 52% | 1949 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,867 psi | 66% | 2037 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 32,039 psi | 61% | 1972 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 98% | 44,251 psi | 84% | 2198 fps | 95% |
| Hodgdon H322 | <<locked>> | 88% | 34,287 psi | 65% | 2093 fps | 95.6% |
| Hodgdon H335 | 24.6 gr | 90% | 37,188 psi | 70% | 2156 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 35,824 psi | 68% | 2018 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,076 psi | 44% | 1198 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 32,111 psi | 61% | 2103 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 29,994 psi | 57% | 1949 fps | 98.2% |
| IMR 4227 | <<locked>> | 80% | 40,698 psi | 77% | 2083 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 40,509 psi | 77% | 2198 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 96% | 42,293 psi | 80% | 2224 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 39,711 psi | 75% | 2051 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,125 psi | 59% | 2011 fps | 98.5% |
| Norma 202 | <<locked>> | 98% | 36,550 psi | 69% | 2152 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,713 psi | 43% | 1224 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,001 psi | 76% | 2113 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 41,307 psi | 78% | 2201 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 96% | 38,450 psi | 73% | 2149 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 88% | 40,509 psi | 77% | 2198 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,449 psi | 71% | 1900 fps | 100% |
| SNPE Vectan SP 10 | 24 gr | 88% | 37,811 psi | 71% | 2162 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 30,182 psi | 57% | 1982 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 38,334 psi | 72% | 2093 fps | 95.5% |
| Somchem S335 | <<locked>> | 94% | 34,592 psi | 65% | 2057 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 33,359 psi | 63% | 2008 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,760 psi | 51% | 1880 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 86% | 28,152 psi | 53% | 1916 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 92% | 27,209 psi | 51% | 1972 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 98% | 35,331 psi | 67% | 2103 fps | 95.1% |
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 41 powders for 7 x 50 R loaded with the .284 | 145gr | Prvi Partizan SP. Hodgdon H335 delivers the highest muzzle velocity at 2,326 fps; across all powders the maximum-charge window runs from 1,342 fps to 2,326 fps. Accurate 2015 gives the best case fill at 100 %, and 41 of the 41 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 145.0 gr projectile in 0.284" calls for a 1:13.0 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. SNPE Vectan SP 10, ADI AR 2219, Hodgdon H335 rank at the top here: for 7 x 50 R with the .284 | 145gr | Prvi Partizan SP 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.