Load Specifications
Load data in caliber 7 x 50 R with .284 | 171gr | Barnes Match Burner BT bullet and 42 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, Shooters World AR Plus and Lovex D073.4.
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% | 47,340 psi | 89% | 1939 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 42,192 psi | 80% | 1949 fps | 99.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 46,485 psi | 88% | 2021 fps | 97.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 30,516 psi | 58% | 1854 fps | 97.8% |
| Accurate 2520ᴾ | <<locked>> | 100% | 39,958 psi | 75% | 1972 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 94% | 47,819 psi | 90% | 1936 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 92% | 45,716 psi | 86% | 1906 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 92% | 46,847 psi | 88% | 1975 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 47,863 psi | 90% | 2047 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 39,465 psi | 75% | 1975 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 45,963 psi | 87% | 2005 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 45,934 psi | 87% | 1949 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 45,571 psi | 86% | 1936 fps | 99% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 45,745 psi | 86% | 1962 fps | 96% |
| Hodgdon H322 | <<locked>> | 98% | 45,774 psi | 86% | 2021 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 98% | 46,833 psi | 88% | 2041 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 90% | 47,195 psi | 89% | 1936 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,980 psi | 59% | 1161 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 37,101 psi | 70% | 1949 fps | 98% |
| IMR 4198 | <<locked>> | 96% | 46,383 psi | 88% | 1962 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 47,747 psi | 90% | 1916 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 45,339 psi | 86% | 2005 fps | 97.1% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 46,702 psi | 88% | 2021 fps | 96.6% |
| Lovex S053 | <<locked>> | 86% | 46,630 psi | 88% | 1883 fps | 100% |
| Norma 200 | <<locked>> | 94% | 46,267 psi | 87% | 1995 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 37,710 psi | 71% | 1923 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,053 psi | 59% | 1194 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 47,195 psi | 89% | 1946 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 45,774 psi | 86% | 2005 fps | 97% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 41,945 psi | 79% | 1952 fps | 97.1% |
| Shooters World AR Plus | <<locked>> | 92% | 45,339 psi | 86% | 2005 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 45,252 psi | 85% | 1755 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 47,601 psi | 90% | 2047 fps | 98.3% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 47,688 psi | 90% | 2014 fps | 99.6% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 42,061 psi | 79% | 1900 fps | 97.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 33,779 psi | 64% | 1788 fps | 95.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 40,118 psi | 76% | 1900 fps | 97.7% |
| Vihtavuori N120 | <<locked>> | 92% | 47,065 psi | 89% | 1939 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 47,442 psi | 90% | 1972 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 41,075 psi | 78% | 1906 fps | 99.1% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 33,562 psi | 63% | 1867 fps | 98.1% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 36,158 psi | 68% | 1870 fps | 96% |
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% | 36,521 psi | 69% | 1798 fps | 99.2% |
| Accurate 2015 | <<locked>> | 84% | 25,744 psi | 49% | 1680 fps | 95.3% |
| Accurate 2460 | <<locked>> | 92% | 35,563 psi | 67% | 1873 fps | 95.4% |
| Accurate 2495 | <<locked>> | 92% | 23,366 psi | 44% | 1713 fps | 95% |
| Accurate 2520 | <<locked>> | 98% | 37,594 psi | 71% | 1939 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 31,546 psi | 60% | 1699 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 86% | 38,551 psi | 73% | 1808 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 32,605 psi | 62% | 1788 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 32,387 psi | 61% | 1818 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 21,654 psi | 41% | 1617 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 26,818 psi | 51% | 1706 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,895 psi | 64% | 1781 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 29,544 psi | 56% | 1696 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 98% | 43,294 psi | 82% | 1929 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 86% | 31,473 psi | 59% | 1798 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 90% | 35,795 psi | 68% | 1883 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 34,838 psi | 66% | 1762 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,989 psi | 43% | 1040 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 29,530 psi | 56% | 1808 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 29,501 psi | 56% | 1706 fps | 98.5% |
| IMR 4227 | <<locked>> | 80% | 39,813 psi | 75% | 1821 fps | 100% |
| Lovex D073.4 | 19.8 gr | 86% | 36,738 psi | 69% | 1886 fps | 95% |
| Lovex D073.5 | <<locked>> | 96% | 40,814 psi | 77% | 1949 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 39,102 psi | 74% | 1795 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,298 psi | 57% | 1762 fps | 98.8% |
| Norma 202 | <<locked>> | 96% | 33,649 psi | 64% | 1857 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,698 psi | 43% | 1063 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,030 psi | 74% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 40,234 psi | 76% | 1929 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 94% | 35,418 psi | 67% | 1850 fps | 95.4% |
| Shooters World AR Plus | 19.8 gr | 86% | 36,738 psi | 69% | 1886 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,738 psi | 69% | 1657 fps | 100% |
| SNPE Vectan SP 10 | 19.7 gr | 86% | 34,418 psi | 65% | 1857 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 29,370 psi | 55% | 1732 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 35,172 psi | 66% | 1801 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 31,908 psi | 60% | 1755 fps | 95.2% |
| Somchem S335 | <<locked>> | 92% | 31,560 psi | 60% | 1765 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 32,837 psi | 62% | 1762 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,078 psi | 49% | 1647 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 86% | 27,572 psi | 52% | 1680 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 92% | 26,658 psi | 50% | 1732 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 98% | 34,113 psi | 64% | 1837 fps | 95.4% |
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 42 powders for 7 x 50 R loaded with the .284 | 171gr | Barnes Match Burner BT. ADI AR 2219 delivers the highest muzzle velocity at 2,047 fps; across all powders the maximum-charge window runs from 1,161 fps to 2,047 fps. Accurate 2015 gives the best case fill at 100 %, and 42 of the 42 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. 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, Shooters World AR Plus, Lovex D073.4 rank at the top here: for 7 x 50 R with the .284 | 171gr | Barnes Match Burner BT 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.