Load Specifications
Load data in caliber 7 x 50 R with .284 | 140gr | Prvi Partizan PSP BT bullet and 33 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 Norma 200.
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>> | 88% | 46,122 psi | 87% | 2211 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 41,191 psi | 78% | 2221 fps | 98.6% |
| Accurate 2460ᴾ | <<locked>> | 100% | 45,252 psi | 85% | 2297 fps | 96.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 29,211 psi | 55% | 2093 fps | 96% |
| Accurate LT-30 | <<locked>> | 94% | 46,978 psi | 89% | 2211 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 94% | 47,543 psi | 90% | 2215 fps | 96.3% |
| ADI AR 2207 | <<locked>> | 94% | 47,848 psi | 90% | 2290 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 46,151 psi | 87% | 2320 fps | 97.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,927 psi | 72% | 2238 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 44,991 psi | 85% | 2293 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 92% | 47,282 psi | 89% | 2260 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 47,601 psi | 90% | 2247 fps | 98.5% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 43,337 psi | 82% | 2277 fps | 97.4% |
| Hodgdon H335 | <<locked>> | 96% | 45,774 psi | 86% | 2320 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 92% | 45,861 psi | 87% | 2208 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,806 psi | 58% | 1352 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 47,442 psi | 90% | 2274 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 46,253 psi | 87% | 2192 fps | 100% |
| Lovex S053 | <<locked>> | 88% | 47,790 psi | 90% | 2195 fps | 100% |
| Norma 200 | <<locked>> | 96% | 47,761 psi | 90% | 2313 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,676 psi | 58% | 1388 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 45,745 psi | 86% | 2224 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 47,485 psi | 90% | 2320 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 94% | 46,688 psi | 88% | 2316 fps | 96.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 46,311 psi | 87% | 2047 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 46,456 psi | 88% | 2326 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 46,050 psi | 87% | 2290 fps | 98.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 38,928 psi | 74% | 2156 fps | 96.2% |
| Vihtavuori N110 | <<locked>> | 82% | 47,166 psi | 89% | 2113 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 45,600 psi | 86% | 2224 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 46,108 psi | 87% | 2251 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 40,016 psi | 76% | 2165 fps | 98.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,518 psi | 61% | 2113 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% | 35,549 psi | 67% | 2047 fps | 98.2% |
| Accurate 2015 | <<locked>> | 90% | 30,211 psi | 57% | 2024 fps | 95.7% |
| Accurate 2460 | <<locked>> | 96% | 39,784 psi | 75% | 2215 fps | 95.2% |
| Accurate 2495 | <<locked>> | 98% | 27,282 psi | 52% | 2051 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 84% | 34,896 psi | 66% | 2018 fps | 95.3% |
| Accurate LT-32 | <<locked>> | 90% | 42,032 psi | 79% | 2133 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 31,444 psi | 59% | 2034 fps | 99.8% |
| ADI AR 2219 | 22.7 gr | 88% | 35,955 psi | 68% | 2149 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 86% | 25,237 psi | 48% | 1952 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 25,802 psi | 49% | 1929 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 32,909 psi | 62% | 2028 fps | 98.1% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 34,664 psi | 65% | 2044 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 94% | 36,448 psi | 69% | 2159 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 92% | 40,045 psi | 76% | 2228 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 84% | 36,230 psi | 68% | 2047 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,539 psi | 43% | 1204 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,732 psi | 54% | 1942 fps | 97.1% |
| IMR 4227 | <<locked>> | 80% | 39,015 psi | 74% | 2087 fps | 99.9% |
| Lovex S053 | <<locked>> | 80% | 38,014 psi | 72% | 2057 fps | 100% |
| Norma 200 | 19.5 gr | 80% | 29,138 psi | 55% | 1998 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,597 psi | 43% | 1240 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,840 psi | 71% | 2106 fps | 99.8% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 43,976 psi | 83% | 2267 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 92% | 43,714 psi | 83% | 2274 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,781 psi | 68% | 1906 fps | 100% |
| SNPE Vectan SP 10 | 24.5 gr | 92% | 40,567 psi | 77% | 2234 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 32,358 psi | 61% | 2051 fps | 95.3% |
| Somchem S335 | <<locked>> | 98% | 36,593 psi | 69% | 2116 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 44,730 psi | 84% | 2080 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,691 psi | 60% | 2008 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 27,151 psi | 51% | 1913 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 90% | 29,762 psi | 56% | 1972 fps | 95% |
| Vihtavuori N135 | <<locked>> | 96% | 29,095 psi | 55% | 2037 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 33 powders for 7 x 50 R loaded with the .284 | 140gr | Prvi Partizan PSP BT. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,326 fps; across all powders the maximum-charge window runs from 1,352 fps to 2,326 fps. Accurate 2015 gives the best case fill at 100 %, and 33 of the 33 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 140.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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, Norma 200 rank at the top here: for 7 x 50 R with the .284 | 140gr | Prvi Partizan PSP BT 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.