Load Specifications
Load data in caliber 7 x 50 R with .284 | 130gr | Sierra SP SSPistol bullet and 33 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, Norma 200 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>> | 88% | 46,702 psi | 88% | 2339 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 41,365 psi | 78% | 2343 fps | 98.3% |
| Accurate 2460ᴾ | <<locked>> | 100% | 45,788 psi | 86% | 2425 fps | 96.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,823 psi | 64% | 2310 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 94% | 47,050 psi | 89% | 2333 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 94% | 47,601 psi | 90% | 2336 fps | 96% |
| ADI AR 2207 | <<locked>> | 92% | 45,411 psi | 86% | 2385 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 46,630 psi | 88% | 2451 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,522 psi | 73% | 2365 fps | 99.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,790 psi | 90% | 2454 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 47,601 psi | 90% | 2388 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 47,587 psi | 90% | 2365 fps | 98.3% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 43,918 psi | 83% | 2408 fps | 97.2% |
| Hodgdon H335 | <<locked>> | 96% | 45,687 psi | 86% | 2441 fps | 96.5% |
| Hodgdon H4198 | <<locked>> | 92% | 45,818 psi | 87% | 2326 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,792 psi | 58% | 1437 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 47,805 psi | 90% | 2405 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 46,934 psi | 89% | 2323 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 46,992 psi | 89% | 2441 fps | 95.8% |
| Lovex S053 | <<locked>> | 88% | 47,877 psi | 90% | 2316 fps | 100% |
| Norma 200 | <<locked>> | 94% | 45,469 psi | 86% | 2405 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,618 psi | 58% | 1473 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 45,905 psi | 87% | 2349 fps | 100% |
| Shooters World AR Plus | <<locked>> | 94% | 46,992 psi | 89% | 2441 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 46,847 psi | 88% | 2169 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 46,543 psi | 88% | 2451 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 46,615 psi | 88% | 2421 fps | 98.5% |
| Somchem S335ᴾ | <<locked>> | 100% | 39,349 psi | 74% | 2277 fps | 95.9% |
| Vihtavuori N110 | <<locked>> | 82% | 47,572 psi | 90% | 2238 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 45,629 psi | 86% | 2346 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 46,456 psi | 88% | 2375 fps | 99.5% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 40,219 psi | 76% | 2287 fps | 97.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,706 psi | 62% | 2228 fps | 96.2% |
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% | 35,694 psi | 67% | 2159 fps | 97.9% |
| Accurate 2015 | <<locked>> | 90% | 30,211 psi | 57% | 2133 fps | 95.2% |
| Accurate 2460 | <<locked>> | 98% | 42,511 psi | 80% | 2375 fps | 95.5% |
| Accurate 2495 | <<locked>> | 96% | 29,269 psi | 55% | 2215 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 86% | 37,333 psi | 71% | 2172 fps | 95.7% |
| Accurate LT-32 | <<locked>> | 92% | 44,962 psi | 85% | 2293 fps | 95.4% |
| ADI AR 2207 | 20 gr | 80% | 31,401 psi | 59% | 2146 fps | 99.7% |
| ADI AR 2219 | 24.9 gr | 90% | 38,653 psi | 73% | 2313 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 86% | 25,338 psi | 48% | 2057 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 82% | 27,717 psi | 52% | 2080 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,083 psi | 62% | 2139 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 34,983 psi | 66% | 2159 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 94% | 36,448 psi | 69% | 2270 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 92% | 40,263 psi | 76% | 2349 fps | 95% |
| Hodgdon H4198 | <<locked>> | 86% | 38,464 psi | 73% | 2201 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,611 psi | 43% | 1280 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,863 psi | 55% | 2051 fps | 96.8% |
| IMR 4227 | <<locked>> | 80% | 39,044 psi | 74% | 2201 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 92% | 44,193 psi | 83% | 2398 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 38,174 psi | 72% | 2175 fps | 100% |
| Norma 200 | 20.9 gr | 80% | 29,283 psi | 55% | 2106 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,205 psi | 42% | 1309 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,014 psi | 72% | 2224 fps | 99.7% |
| Shooters World AR Plus | <<locked>> | 92% | 44,193 psi | 83% | 2398 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,998 psi | 68% | 2018 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 41,017 psi | 77% | 2359 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 32,634 psi | 62% | 2169 fps | 95% |
| Somchem S335 | <<locked>> | 98% | 36,738 psi | 69% | 2231 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 44,672 psi | 84% | 2201 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,647 psi | 60% | 2119 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 28,601 psi | 54% | 2051 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 92% | 31,966 psi | 60% | 2126 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 98% | 30,893 psi | 58% | 2185 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 57 powders for 7 x 50 R loaded with the .284 | 130gr | Sierra SP SSPistol. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,500 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,500 fps. Accurate 2015 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (365 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:13.5 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. ADI AR 2219, Norma 200, ADI AR 2207 rank at the top here: for 7 x 50 R with the .284 | 130gr | Sierra SP SSPistol they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2520, Accurate 4064, ADI Benchmark 8208 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.