Load Specifications
Load data in caliber .50 BMG with .510 | 750gr | Barnes TAC-LR LG bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Alliant Reloder-50 and Vihtavuori N570.
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: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 47,921 psi | 89% | 2362 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 45,005 psi | 84% | 2457 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 82% | 47,659 psi | 89% | 2454 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 46,528 psi | 87% | 2448 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 45,803 psi | 85% | 2556 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 92% | 45,498 psi | 85% | 2470 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 48,225 psi | 90% | 2451 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 46,949 psi | 87% | 2369 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 46,905 psi | 87% | 2441 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 47,123 psi | 88% | 2539 fps | 99.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 46,398 psi | 86% | 2533 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 48,370 psi | 90% | 2434 fps | 99.4% |
| Bofors RP15 | <<locked>> | 84% | 47,921 psi | 89% | 2448 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 46,615 psi | 87% | 2461 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 48,225 psi | 90% | 2451 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 47,601 psi | 89% | 2461 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 46,021 psi | 86% | 2520 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,927 psi | 71% | 1542 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 46,456 psi | 87% | 2444 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 86% | 46,325 psi | 86% | 2343 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 47,906 psi | 89% | 2507 fps | 100% |
| Lovex S071 | <<locked>> | 86% | 46,818 psi | 87% | 2346 fps | 100% |
| Norma 217 | <<locked>> | 94% | 45,614 psi | 85% | 2477 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 46,920 psi | 87% | 2457 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 45,150 psi | 84% | 2398 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,885 psi | 72% | 1578 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 45,542 psi | 85% | 2503 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 48,298 psi | 90% | 2536 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 47,152 psi | 88% | 2467 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 82% | 45,861 psi | 85% | 2343 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 47,601 psi | 89% | 2425 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 86% | 48,356 psi | 90% | 2470 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 45,948 psi | 86% | 2484 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 90% | 46,992 psi | 88% | 2543 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 45,977 psi | 86% | 2448 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 48,414 psi | 90% | 2392 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 44,744 psi | 83% | 2316 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 33,837 psi | 63% | 2244 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 80% | 44,454 psi | 83% | 2405 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 32,982 psi | 61% | 2198 fps | 98.9% |
| ADI AR 2218 | 203.5 gr | 86% | 34,389 psi | 64% | 2316 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 30,197 psi | 56% | 2182 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,078 psi | 84% | 2405 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,961 psi | 82% | 2326 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,087 psi | 71% | 2303 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 32,474 psi | 61% | 2254 fps | 95.5% |
| Alliant Reloder-50 | 211.4 gr | 88% | 34,490 psi | 64% | 2303 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 42,540 psi | 79% | 2336 fps | 98.5% |
| Bofors RP15 | <<locked>> | 80% | 42,003 psi | 78% | 2352 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 35,433 psi | 66% | 2264 fps | 99.4% |
| Bofors RP5 | <<locked>> | 80% | 45,078 psi | 84% | 2405 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 35,926 psi | 67% | 2260 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 80% | 37,275 psi | 69% | 2365 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 53% | 1375 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 43,279 psi | 81% | 2392 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 84% | 43,439 psi | 81% | 2293 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 80% | 27,717 psi | 52% | 2113 fps | 97.2% |
| Lovex S071 | <<locked>> | 80% | 38,653 psi | 72% | 2218 fps | 100% |
| Norma 217 | <<locked>> | 80% | 27,891 psi | 52% | 2133 fps | 99.1% |
| Ramshot Grand | <<locked>> | 80% | 43,540 psi | 81% | 2408 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 38,943 psi | 73% | 2300 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,211 psi | 54% | 1407 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 36,260 psi | 68% | 2343 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 33,098 psi | 62% | 2257 fps | 97.9% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 35,795 psi | 67% | 2264 fps | 95.7% |
| Vihtavuori N165 | <<locked>> | 80% | 42,902 psi | 80% | 2297 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 36,303 psi | 68% | 2218 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 80% | 39,407 psi | 73% | 2323 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 80% | 34,505 psi | 64% | 2270 fps | 97.8% |
| Vihtavuori N570 | 185.4 gr | 80% | 32,706 psi | 61% | 2260 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 42,656 psi | 79% | 2398 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,223 psi | 84% | 2346 fps | 100% |
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 43 powders for .50 BMG loaded with the .510 | 750gr | Barnes TAC-LR LG. ADI AR 2218 delivers the highest muzzle velocity at 2,556 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,556 fps. Accurate 8700 gives the best case fill at 100 %, and 43 of the 43 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (370 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 750.0 gr projectile in 0.51" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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 2218, Alliant Reloder-50, Vihtavuori N570 rank at the top here: for .50 BMG with the .510 | 750gr | Barnes TAC-LR LG they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG 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.