Load Specifications
Load data in caliber 7 x 50 R with .285 | 139gr | Prvi Partizan SP bullet and 44 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 Shooters World AR Plus.
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% | 47,587 psi | 90% | 2297 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,035 psi | 87% | 2352 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 47,732 psi | 90% | 2398 fps | 97.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 34,098 psi | 64% | 2238 fps | 98.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,438 psi | 80% | 2372 fps | 96.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,438 psi | 80% | 2372 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 90% | 45,339 psi | 86% | 2257 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 90% | 45,832 psi | 87% | 2260 fps | 97% |
| ADI AR 2207 | <<locked>> | 90% | 47,123 psi | 89% | 2339 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 44,991 psi | 85% | 2372 fps | 98.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,525 psi | 80% | 2379 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 96% | 47,152 psi | 89% | 2382 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 46,311 psi | 87% | 2310 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 46,340 psi | 88% | 2297 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 98% | 46,818 psi | 88% | 2329 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 98% | 45,498 psi | 86% | 2382 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 94% | 47,659 psi | 90% | 2418 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 90% | 46,847 psi | 88% | 2290 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,705 psi | 60% | 1414 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 36,651 psi | 69% | 2287 fps | 97.5% |
| IMR 4198 | <<locked>> | 94% | 46,862 psi | 89% | 2329 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 47,645 psi | 90% | 2274 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 44,657 psi | 84% | 2336 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 96% | 45,034 psi | 85% | 2359 fps | 96% |
| Lovex S053 | <<locked>> | 84% | 46,572 psi | 88% | 2234 fps | 100% |
| Norma 200 | <<locked>> | 92% | 47,703 psi | 90% | 2372 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 41,234 psi | 78% | 2323 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,575 psi | 60% | 1450 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 46,818 psi | 88% | 2300 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 46,006 psi | 87% | 2369 fps | 96.7% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 45,281 psi | 86% | 2349 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 90% | 46,224 psi | 87% | 2375 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 47,674 psi | 90% | 2116 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 45,658 psi | 86% | 2382 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 45,266 psi | 86% | 2343 fps | 99.2% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 45,237 psi | 85% | 2290 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 36,245 psi | 68% | 2156 fps | 96.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 43,337 psi | 82% | 2290 fps | 98% |
| Vihtavuori N120 | <<locked>> | 90% | 47,311 psi | 89% | 2300 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 45,571 psi | 86% | 2306 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 44,237 psi | 84% | 2297 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 36,405 psi | 69% | 2251 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 39,117 psi | 74% | 2260 fps | 96.5% |
| Winchester 748 | <<locked>> | 98% | 45,571 psi | 86% | 2408 fps | 95.9% |
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% | 38,957 psi | 74% | 2165 fps | 99.3% |
| Accurate 2015 | <<locked>> | 84% | 28,268 psi | 53% | 2034 fps | 95.8% |
| Accurate 2460 | <<locked>> | 90% | 36,564 psi | 69% | 2221 fps | 95.2% |
| Accurate 2495 | <<locked>> | 92% | 26,397 psi | 50% | 2073 fps | 95.7% |
| Accurate 2520 | <<locked>> | 98% | 39,494 psi | 75% | 2323 fps | 95.6% |
| Accurate 2520 | <<locked>> | 98% | 39,494 psi | 75% | 2323 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 33,504 psi | 63% | 2051 fps | 95.8% |
| Accurate LT-32 | <<locked>> | 84% | 38,348 psi | 72% | 2136 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 34,722 psi | 66% | 2146 fps | 100% |
| ADI AR 2219 | 23.6 gr | 82% | 32,793 psi | 62% | 2149 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 23,090 psi | 44% | 1946 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,935 psi | 55% | 2057 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,100 psi | 68% | 2146 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,705 psi | 60% | 2044 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 96% | 43,874 psi | 83% | 2287 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 88% | 33,547 psi | 63% | 2165 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 86% | 36,172 psi | 68% | 2224 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 34,911 psi | 66% | 2087 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,235 psi | 44% | 1260 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 30,951 psi | 58% | 2162 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 31,444 psi | 59% | 2060 fps | 98.7% |
| IMR 4227 | <<locked>> | 80% | 42,351 psi | 80% | 2198 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 41,568 psi | 79% | 2287 fps | 95% |
| Lovex D073.5 | <<locked>> | 94% | 42,018 psi | 79% | 2310 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 41,553 psi | 78% | 2165 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,779 psi | 62% | 2126 fps | 98.9% |
| Norma 202 | <<locked>> | 96% | 36,419 psi | 69% | 2238 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,887 psi | 43% | 1286 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,814 psi | 79% | 2228 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 40,654 psi | 77% | 2280 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 92% | 35,955 psi | 68% | 2188 fps | 95% |
| Shooters World AR Plus | 25.7 gr | 86% | 40,118 psi | 76% | 2280 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,769 psi | 73% | 1998 fps | 100% |
| SNPE Vectan SP 10 | 25.6 gr | 86% | 37,449 psi | 71% | 2244 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,907 psi | 56% | 2057 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 37,637 psi | 71% | 2165 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 34,243 psi | 65% | 2119 fps | 95.6% |
| Somchem S335 | <<locked>> | 90% | 32,227 psi | 61% | 2090 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 34,940 psi | 66% | 2116 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,253 psi | 53% | 1991 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 27,615 psi | 52% | 1982 fps | 95% |
| Vihtavuori N135 | <<locked>> | 90% | 27,093 psi | 51% | 2047 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 96% | 34,693 psi | 66% | 2175 fps | 95.1% |
| Winchester 748 | <<locked>> | 96% | 42,627 psi | 81% | 2359 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 71 powders for 7 x 50 R loaded with the .285 | 139gr | Prvi Partizan SP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,438 fps; across all powders the maximum-charge window runs from 1,414 fps to 2,438 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.285" calls for a 1:16.0 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, Shooters World AR Plus rank at the top here: for 7 x 50 R with the .285 | 139gr | Prvi Partizan SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, Accurate 4064 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.