Load Specifications
Load data in caliber 7 x 50 R with .284 | 145gr | Speer Boat-Tail bullet and 40 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 Hodgdon H335.
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% | 45,527 psi | 86% | 2175 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,642 psi | 82% | 2231 fps | 99.3% |
| Accurate 2460 | <<locked>> | 98% | 44,947 psi | 85% | 2267 fps | 97.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,488 psi | 59% | 2110 fps | 97.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,626 psi | 79% | 2254 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 92% | 46,325 psi | 88% | 2178 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 92% | 46,862 psi | 89% | 2182 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 92% | 47,558 psi | 90% | 2254 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 45,614 psi | 86% | 2287 fps | 98.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,524 psi | 77% | 2254 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 47,659 psi | 90% | 2297 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 46,934 psi | 89% | 2228 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 46,891 psi | 89% | 2211 fps | 98.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 47,152 psi | 89% | 2241 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 98% | 47,326 psi | 89% | 2310 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 96% | 45,194 psi | 85% | 2287 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 88% | 45,324 psi | 86% | 2175 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,328 psi | 59% | 1342 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,174 psi | 72% | 2224 fps | 97.7% |
| IMR 4198 | <<locked>> | 96% | 46,978 psi | 89% | 2238 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 45,759 psi | 86% | 2156 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 46,253 psi | 87% | 2283 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 98% | 45,165 psi | 85% | 2267 fps | 95.7% |
| Lovex S053 | <<locked>> | 86% | 47,398 psi | 90% | 2156 fps | 100% |
| Norma 200 | <<locked>> | 94% | 47,543 psi | 90% | 2280 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 38,972 psi | 74% | 2195 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,241 psi | 59% | 1378 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 47,688 psi | 90% | 2221 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 46,833 psi | 88% | 2283 fps | 96.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 42,975 psi | 81% | 2224 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 92% | 46,253 psi | 87% | 2283 fps | 96.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 45,905 psi | 87% | 2011 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 45,948 psi | 87% | 2293 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 45,687 psi | 86% | 2257 fps | 99.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,105 psi | 81% | 2165 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,017 psi | 77% | 2165 fps | 97.3% |
| Vihtavuori N120 | <<locked>> | 92% | 47,761 psi | 90% | 2215 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 45,643 psi | 86% | 2215 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,119 psi | 80% | 2175 fps | 98.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,418 psi | 65% | 2126 fps | 97.8% |
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% | 37,463 psi | 71% | 2054 fps | 99% |
| Accurate 2015 | <<locked>> | 86% | 28,427 psi | 54% | 1959 fps | 95.7% |
| Accurate 2460 | <<locked>> | 92% | 36,695 psi | 69% | 2136 fps | 95% |
| Accurate 2495 | <<locked>> | 94% | 25,817 psi | 49% | 1985 fps | 95.3% |
| Accurate 2520 | <<locked>> | 98% | 38,522 psi | 73% | 2205 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 32,155 psi | 61% | 1939 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 86% | 39,059 psi | 74% | 2060 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 33,199 psi | 63% | 2037 fps | 100% |
| ADI AR 2219 | 22.1 gr | 84% | 33,141 psi | 63% | 2070 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 82% | 23,380 psi | 44% | 1880 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,296 psi | 52% | 1942 fps | 96.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,490 psi | 65% | 2031 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 32,097 psi | 61% | 1972 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 98% | 44,469 psi | 84% | 2201 fps | 95% |
| Hodgdon H322 | <<locked>> | 88% | 34,389 psi | 65% | 2096 fps | 95.6% |
| Hodgdon H335 | 24.5 gr | 90% | 36,840 psi | 70% | 2149 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 35,491 psi | 67% | 2011 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,105 psi | 44% | 1198 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 32,213 psi | 61% | 2106 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 30,081 psi | 57% | 1949 fps | 98.2% |
| IMR 4227 | <<locked>> | 80% | 40,770 psi | 77% | 2087 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 40,147 psi | 76% | 2192 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 96% | 42,409 psi | 80% | 2224 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 39,798 psi | 75% | 2054 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,198 psi | 59% | 2014 fps | 98.5% |
| Norma 202 | <<locked>> | 98% | 36,666 psi | 69% | 2156 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,756 psi | 43% | 1224 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,581 psi | 75% | 2106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 40,988 psi | 77% | 2195 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 96% | 38,595 psi | 73% | 2152 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 88% | 40,147 psi | 76% | 2192 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,057 psi | 70% | 1893 fps | 100% |
| SNPE Vectan SP 10 | 24 gr | 88% | 37,913 psi | 72% | 2165 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 30,255 psi | 57% | 1985 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 38,000 psi | 72% | 2087 fps | 95.4% |
| Somchem S335 | <<locked>> | 94% | 34,258 psi | 65% | 2051 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 33,431 psi | 63% | 2011 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,832 psi | 51% | 1880 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 88% | 29,617 psi | 56% | 1949 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 92% | 27,296 psi | 52% | 1972 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 67 powders for 7 x 50 R loaded with the .284 | 145gr | Speer Boat-Tail. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,346 fps; across all powders the maximum-charge window runs from 1,342 fps to 2,346 fps. Accurate 2015 gives the best case fill at 100 %, and 67 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:12.0 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, Hodgdon H335 rank at the top here: for 7 x 50 R with the .284 | 145gr | Speer Boat-Tail 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.