Load Specifications
Load data in caliber 7 x 50 R with .284 | 145gr | Speer Grand Slam bullet and 41 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% | 45,905 psi | 87% | 2185 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,976 psi | 83% | 2238 fps | 99.4% |
| Accurate 2460 | <<locked>> | 98% | 45,803 psi | 87% | 2283 fps | 97.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,300 psi | 61% | 2126 fps | 97.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,843 psi | 79% | 2264 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 92% | 46,702 psi | 88% | 2188 fps | 98.7% |
| Accurate LT-32 | <<locked>> | 92% | 47,166 psi | 89% | 2192 fps | 97% |
| ADI AR 2207 | <<locked>> | 90% | 45,136 psi | 85% | 2224 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 46,470 psi | 88% | 2303 fps | 98.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,872 psi | 77% | 2264 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 96% | 45,237 psi | 85% | 2267 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 90% | 47,340 psi | 89% | 2234 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 47,123 psi | 89% | 2218 fps | 98.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 47,398 psi | 90% | 2251 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 98% | 47,659 psi | 90% | 2320 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 96% | 45,440 psi | 86% | 2297 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 88% | 45,759 psi | 86% | 2185 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,531 psi | 60% | 1348 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,479 psi | 73% | 2234 fps | 97.8% |
| IMR 4198 | <<locked>> | 96% | 47,340 psi | 89% | 2247 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 46,296 psi | 87% | 2165 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 47,210 psi | 89% | 2300 fps | 97% |
| Lovex D073.5 | <<locked>> | 98% | 45,498 psi | 86% | 2274 fps | 95.9% |
| Lovex S053 | <<locked>> | 86% | 47,297 psi | 89% | 2159 fps | 100% |
| Norma 200 | <<locked>> | 92% | 45,107 psi | 85% | 2251 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 39,305 psi | 74% | 2205 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,922 psi | 58% | 1375 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 45,281 psi | 86% | 2192 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 47,137 psi | 89% | 2293 fps | 96.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,294 psi | 82% | 2231 fps | 96.9% |
| Shooters World AR Plus | <<locked>> | 92% | 47,210 psi | 89% | 2300 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 46,427 psi | 88% | 2018 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 46,311 psi | 87% | 2303 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 46,093 psi | 87% | 2267 fps | 99.2% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,395 psi | 82% | 2175 fps | 96.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,800 psi | 79% | 2182 fps | 97.6% |
| Vihtavuori N120 | <<locked>> | 90% | 45,310 psi | 86% | 2188 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 46,093 psi | 87% | 2224 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,409 psi | 80% | 2182 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,737 psi | 66% | 2136 fps | 97.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 37,391 psi | 71% | 2142 fps | 95.8% |
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% | 37,869 psi | 72% | 2064 fps | 99.1% |
| Accurate 2015 | <<locked>> | 84% | 27,021 psi | 51% | 1929 fps | 95.1% |
| Accurate 2460 | <<locked>> | 92% | 37,014 psi | 70% | 2146 fps | 95.2% |
| Accurate 2495 | <<locked>> | 94% | 26,136 psi | 49% | 1998 fps | 95.5% |
| Accurate 2520 | <<locked>> | 98% | 39,305 psi | 74% | 2221 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 32,474 psi | 61% | 1952 fps | 95.3% |
| Accurate LT-32 | <<locked>> | 86% | 39,465 psi | 75% | 2073 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 33,228 psi | 63% | 2041 fps | 100% |
| ADI AR 2219 | 22.3 gr | 84% | 33,446 psi | 63% | 2080 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 82% | 23,685 psi | 45% | 1890 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,688 psi | 52% | 1952 fps | 96.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,925 psi | 66% | 2041 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 32,416 psi | 61% | 1982 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 98% | 44,730 psi | 84% | 2211 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 86% | 32,648 psi | 62% | 2064 fps | 95% |
| Hodgdon H335 | 24.7 gr | 90% | 37,159 psi | 70% | 2159 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 35,853 psi | 68% | 2021 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,902 psi | 43% | 1198 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 30,603 psi | 58% | 2073 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 30,095 psi | 57% | 1952 fps | 98.2% |
| IMR 4227 | <<locked>> | 80% | 40,727 psi | 77% | 2090 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 41,075 psi | 78% | 2211 fps | 95.6% |
| Lovex D073.5 | <<locked>> | 96% | 42,714 psi | 81% | 2234 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 39,798 psi | 75% | 2057 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,212 psi | 59% | 2018 fps | 98.5% |
| Norma 202 | <<locked>> | 98% | 36,970 psi | 70% | 2162 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,989 psi | 43% | 1234 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,059 psi | 76% | 2116 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 41,278 psi | 78% | 2205 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 94% | 36,695 psi | 69% | 2119 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 88% | 41,075 psi | 78% | 2211 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,550 psi | 71% | 1903 fps | 100% |
| SNPE Vectan SP 10 | 24.2 gr | 88% | 38,247 psi | 72% | 2175 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 30,240 psi | 57% | 1985 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 36,463 psi | 69% | 2064 fps | 95% |
| Somchem S335 | <<locked>> | 92% | 32,605 psi | 62% | 2021 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 33,460 psi | 63% | 2014 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,151 psi | 51% | 1890 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 86% | 28,152 psi | 53% | 1919 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 92% | 27,557 psi | 52% | 1982 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 98% | 35,273 psi | 67% | 2103 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 68 powders for 7 x 50 R loaded with the .284 | 145gr | Speer Grand Slam. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,356 fps; across all powders the maximum-charge window runs from 1,348 fps to 2,356 fps. Accurate 2015 gives the best case fill at 100 %, and 68 of the 68 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 145.0 gr projectile in 0.284" calls for a 1:13.0 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 Grand Slam 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.