Load Specifications
Load data in caliber 7 x 50 R with .284 | 140gr | Sierra Pro-Hunter bullet and 36 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% | 47,384 psi | 90% | 2241 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 42,453 psi | 80% | 2254 fps | 98.9% |
| Accurate 2460ᴾ | <<locked>> | 100% | 46,441 psi | 88% | 2326 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 30,298 psi | 57% | 2126 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 94% | 47,659 psi | 90% | 2234 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 92% | 45,934 psi | 87% | 2205 fps | 96.2% |
| ADI AR 2207 | <<locked>> | 92% | 46,470 psi | 88% | 2283 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 47,297 psi | 89% | 2349 fps | 98.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 39,001 psi | 74% | 2267 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 45,890 psi | 87% | 2316 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 90% | 45,890 psi | 87% | 2254 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 45,847 psi | 87% | 2234 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 98% | 45,614 psi | 86% | 2326 fps | 98% |
| Hodgdon H335 | <<locked>> | 98% | 46,804 psi | 88% | 2349 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 90% | 47,297 psi | 89% | 2241 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,980 psi | 59% | 1365 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 37,202 psi | 70% | 2244 fps | 97% |
| IMR 4198 | <<locked>> | 96% | 45,992 psi | 87% | 2267 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 47,297 psi | 89% | 2218 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 45,005 psi | 85% | 2303 fps | 96% |
| Lovex S053 | <<locked>> | 86% | 45,977 psi | 87% | 2182 fps | 100% |
| Norma 200 | <<locked>> | 94% | 46,296 psi | 87% | 2306 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,850 psi | 58% | 1401 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 46,688 psi | 88% | 2251 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 45,063 psi | 85% | 2300 fps | 95.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 41,829 psi | 79% | 2244 fps | 96% |
| Shooters World AR Plus | <<locked>> | 92% | 45,005 psi | 85% | 2303 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 47,456 psi | 90% | 2070 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 47,500 psi | 90% | 2356 fps | 97.4% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 47,485 psi | 90% | 2323 fps | 99% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 42,032 psi | 79% | 2188 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 39,914 psi | 75% | 2185 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 92% | 46,630 psi | 88% | 2244 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 47,398 psi | 90% | 2280 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 41,075 psi | 78% | 2195 fps | 98.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 33,518 psi | 63% | 2146 fps | 97.1% |
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% | 36,289 psi | 69% | 2070 fps | 98.5% |
| Accurate 2015 | <<locked>> | 88% | 29,095 psi | 55% | 2011 fps | 95.5% |
| Accurate 2460 | <<locked>> | 96% | 40,886 psi | 77% | 2244 fps | 95.7% |
| Accurate 2495 | <<locked>> | 96% | 26,571 psi | 50% | 2041 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 82% | 33,562 psi | 63% | 2001 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 90% | 43,265 psi | 82% | 2165 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 32,024 psi | 60% | 2057 fps | 99.9% |
| ADI AR 2219 | 22.7 gr | 86% | 34,432 psi | 65% | 2133 fps | 95% |
| Alliant AR-Comp | <<locked>> | 84% | 24,279 psi | 46% | 1936 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 26,643 psi | 50% | 1962 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,794 psi | 64% | 2054 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 33,243 psi | 63% | 2028 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 90% | 35,708 psi | 67% | 2156 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 92% | 38,174 psi | 72% | 2208 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 82% | 37,057 psi | 70% | 2077 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,843 psi | 43% | 1217 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 32,953 psi | 62% | 2156 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 29,196 psi | 55% | 1962 fps | 97.5% |
| IMR 4227 | <<locked>> | 80% | 39,566 psi | 75% | 2106 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 42,119 psi | 80% | 2260 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 38,624 psi | 73% | 2077 fps | 100% |
| Norma 200 | 20 gr | 80% | 30,023 psi | 57% | 2028 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,466 psi | 42% | 1243 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,783 psi | 73% | 2133 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 42,395 psi | 80% | 2257 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 98% | 39,407 psi | 74% | 2205 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 90% | 42,119 psi | 80% | 2260 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,463 psi | 69% | 1926 fps | 100% |
| SNPE Vectan SP 10 | 24.6 gr | 90% | 39,218 psi | 74% | 2224 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 31,169 psi | 59% | 2037 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 39,479 psi | 75% | 2146 fps | 95.3% |
| Somchem S335 | <<locked>> | 96% | 35,447 psi | 67% | 2106 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 32,271 psi | 61% | 2031 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 25,889 psi | 49% | 1893 fps | 95% |
| Vihtavuori N133 | <<locked>> | 90% | 30,719 psi | 58% | 2008 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 96% | 29,631 psi | 56% | 2064 fps | 95.6% |
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 61 powders for 7 x 50 R loaded with the .284 | 140gr | Sierra Pro-Hunter. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,411 fps; across all powders the maximum-charge window runs from 1,365 fps to 2,411 fps. Accurate 2015 gives the best case fill at 100 %, and 61 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 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 | Sierra Pro-Hunter 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.