Load Specifications
Load data in caliber 7 x 50 R with .284 | 155gr | Frontier PH HPFB bullet and 33 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Norma 200 and ADI AR 2207.
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>> | 90% | 46,601 psi | 88% | 2024 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 37,608 psi | 71% | 1982 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 96% | 47,181 psi | 89% | 2018 fps | 98% |
| Accurate LT-32 | <<locked>> | 96% | 47,819 psi | 90% | 2021 fps | 96.2% |
| ADI AR 2205 | <<locked>> | 82% | 47,195 psi | 89% | 1929 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 47,645 psi | 90% | 2093 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 46,079 psi | 87% | 2116 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 35,607 psi | 67% | 2005 fps | 99.2% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 44,411 psi | 84% | 2090 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 94% | 46,847 psi | 88% | 2060 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 47,108 psi | 89% | 2047 fps | 98.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 44,077 psi | 83% | 2090 fps | 97.3% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 44,904 psi | 85% | 2106 fps | 96.4% |
| Hodgdon H4198 | <<locked>> | 92% | 45,934 psi | 87% | 2011 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,603 psi | 58% | 1217 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 47,572 psi | 90% | 2077 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 46,456 psi | 88% | 2001 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 47,340 psi | 89% | 2034 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 96% | 46,485 psi | 88% | 2113 fps | 95.8% |
| Lovex S053 | <<locked>> | 88% | 45,237 psi | 85% | 1972 fps | 100% |
| Norma 200 | <<locked>> | 98% | 47,340 psi | 89% | 2113 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,994 psi | 57% | 1243 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 45,571 psi | 86% | 2031 fps | 100% |
| Shooters World AR Plus | <<locked>> | 96% | 46,485 psi | 88% | 2113 fps | 95.8% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 47,340 psi | 89% | 2034 fps | 99.9% |
| Shooters World SOCOM | <<locked>> | 82% | 47,485 psi | 90% | 2014 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 46,789 psi | 88% | 1870 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 46,224 psi | 87% | 2123 fps | 96.7% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 45,759 psi | 86% | 2087 fps | 98.5% |
| Vihtavuori N110 | <<locked>> | 84% | 47,485 psi | 90% | 1929 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 47,906 psi | 90% | 2057 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 42,917 psi | 81% | 2014 fps | 99.2% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 37,347 psi | 71% | 1939 fps | 97.3% |
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% | 33,794 psi | 64% | 1841 fps | 97.7% |
| Accurate 2015 | <<locked>> | 92% | 29,573 psi | 56% | 1844 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 86% | 34,824 psi | 66% | 1841 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 94% | 44,512 psi | 84% | 1978 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 44,512 psi | 84% | 1900 fps | 100% |
| ADI AR 2207 | 15.9 gr | 80% | 29,167 psi | 55% | 1821 fps | 99.5% |
| ADI AR 2219 | 19.8 gr | 90% | 35,984 psi | 68% | 1962 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 88% | 24,918 psi | 47% | 1778 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 82% | 25,817 psi | 49% | 1772 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 31,125 psi | 59% | 1821 fps | 97.6% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 34,447 psi | 65% | 1864 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 94% | 36,970 psi | 70% | 1982 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 98% | 42,424 psi | 80% | 2070 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 86% | 38,522 psi | 73% | 1906 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,133 psi | 42% | 1079 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 27,369 psi | 52% | 1742 fps | 96.5% |
| IMR 4227 | <<locked>> | 80% | 36,956 psi | 70% | 1873 fps | 99.8% |
| Lovex D060 | <<locked>> | 80% | 44,628 psi | 84% | 1998 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 94% | 43,105 psi | 81% | 2070 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 36,187 psi | 68% | 1850 fps | 100% |
| Norma 200 | 16.6 gr | 80% | 26,963 psi | 51% | 1788 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,785 psi | 41% | 1106 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 35,433 psi | 67% | 1886 fps | 99.6% |
| Shooters World AR Plus | <<locked>> | 94% | 43,105 psi | 81% | 2070 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 44,628 psi | 84% | 1998 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 80% | 44,730 psi | 84% | 1982 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,098 psi | 64% | 1716 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 40,611 psi | 77% | 2044 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 32,198 psi | 61% | 1870 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 42,525 psi | 80% | 1873 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,472 psi | 56% | 1801 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 26,818 psi | 51% | 1745 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 94% | 31,459 psi | 59% | 1837 fps | 95.5% |
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 | 155gr | Frontier PH HPFB. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,123 fps; across all powders the maximum-charge window runs from 1,217 fps to 2,123 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 57–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x 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, Norma 200, ADI AR 2207 rank at the top here: for 7 x 50 R with the .284 | 155gr | Frontier PH HPFB 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.