Load Specifications
Load data in caliber 7 x 50 R with .283 | 140gr | Frontier PH HPBT bullet and 30 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, Alliant Reloder-7 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% | 46,311 psi | 87% | 2175 fps | 99.4% |
| Accurate 2015ᴾ | <<locked>> | 100% | 37,753 psi | 71% | 2133 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 96% | 46,528 psi | 88% | 2162 fps | 97.5% |
| ADI AR 2205 | <<locked>> | 82% | 47,050 psi | 89% | 2080 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 47,268 psi | 89% | 2251 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 46,253 psi | 87% | 2277 fps | 97.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 35,201 psi | 66% | 2146 fps | 98.8% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 44,106 psi | 83% | 2244 fps | 99.4% |
| Alliant Reloder-7 | <<locked>> | 94% | 47,007 psi | 89% | 2221 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 47,442 psi | 90% | 2201 fps | 97.9% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 44,396 psi | 84% | 2251 fps | 96.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 45,121 psi | 85% | 2264 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 92% | 45,716 psi | 86% | 2162 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,240 psi | 57% | 1316 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 47,210 psi | 89% | 2231 fps | 99.9% |
| IMR 4227 | <<locked>> | 88% | 46,572 psi | 88% | 2162 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 47,297 psi | 89% | 2192 fps | 99.8% |
| Lovex S053 | <<locked>> | 90% | 47,369 psi | 89% | 2156 fps | 100% |
| Norma 200 | <<locked>> | 98% | 46,833 psi | 88% | 2267 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,110 psi | 57% | 1352 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 45,600 psi | 86% | 2188 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 47,297 psi | 89% | 2192 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 82% | 46,992 psi | 89% | 2165 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 46,166 psi | 87% | 2014 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 45,934 psi | 87% | 2277 fps | 96.1% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 45,426 psi | 86% | 2238 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 84% | 47,384 psi | 90% | 2083 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 47,427 psi | 90% | 2215 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 42,598 psi | 80% | 2162 fps | 98.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 37,072 psi | 70% | 2080 fps | 96.7% |
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% | 33,634 psi | 64% | 1975 fps | 97.1% |
| Accurate 2015 | <<locked>> | 94% | 31,488 psi | 59% | 2021 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 88% | 37,144 psi | 70% | 2021 fps | 95.3% |
| ADI AR 2205 | <<locked>> | 80% | 43,932 psi | 83% | 2041 fps | 100% |
| ADI AR 2207 | 17.3 gr | 80% | 28,848 psi | 54% | 1955 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 92% | 37,797 psi | 71% | 2142 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 90% | 26,310 psi | 50% | 1946 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 27,180 psi | 51% | 1936 fps | 95.2% |
| Alliant Reloder-7 | 17.9 gr | 80% | 30,560 psi | 58% | 1949 fps | 96.9% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 36,811 psi | 70% | 2044 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 96% | 38,841 psi | 73% | 2159 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 98% | 42,221 psi | 80% | 2221 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 88% | 41,060 psi | 78% | 2093 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,452 psi | 42% | 1181 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 26,934 psi | 51% | 1864 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 36,695 psi | 69% | 2014 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 44,208 psi | 84% | 2146 fps | 99.6% |
| Lovex S053 | <<locked>> | 80% | 35,578 psi | 67% | 1988 fps | 100% |
| Norma 200 | 18.1 gr | 80% | 26,818 psi | 51% | 1916 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,060 psi | 42% | 1207 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 35,273 psi | 67% | 2031 fps | 99.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 44,208 psi | 84% | 2146 fps | 99.6% |
| Shooters World SOCOM | <<locked>> | 80% | 44,512 psi | 84% | 2129 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,576 psi | 63% | 1847 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 42,989 psi | 81% | 2234 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 33,765 psi | 64% | 2044 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 42,177 psi | 80% | 2021 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 29,167 psi | 55% | 1932 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 28,398 psi | 54% | 1913 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 96% | 33,344 psi | 63% | 2011 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 30 powders for 7 x 50 R loaded with the .283 | 140gr | Frontier PH HPBT. ADI AR 2219 delivers the highest muzzle velocity at 2,277 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,277 fps. Accurate 2015 gives the best case fill at 100 %, and 30 of the 30 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 140.0 gr projectile in 0.283" calls for a 1:10.0 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. Norma 200, Alliant Reloder-7, ADI AR 2207 rank at the top here: for 7 x 50 R with the .283 | 140gr | Frontier PH HPBT 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.