Load Specifications
Load data in caliber .50 BMG with .510 | 535gr | Woodleigh RN SN bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ADI AR 2218.
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% | 45,934 psi | 86% | 2785 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 47,790 psi | 89% | 2936 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 84% | 48,559 psi | 90% | 2936 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 92% | 47,268 psi | 88% | 2913 fps | 99.6% |
| ADI AR 2218 | <<locked>> | 96% | 47,007 psi | 88% | 3009 fps | 97.1% |
| ADI AR 2225 | <<locked>> | 94% | 46,195 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 45,963 psi | 86% | 2874 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 47,703 psi | 89% | 2854 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 47,500 psi | 89% | 2920 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 48,182 psi | 90% | 2999 fps | 97.4% |
| Alliant Reloder-50 | <<locked>> | 98% | 47,718 psi | 89% | 2982 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 46,412 psi | 86% | 2838 fps | 97% |
| Bofors RP15 | <<locked>> | 84% | 45,643 psi | 85% | 2867 fps | 99.6% |
| Bofors RP30 | <<locked>> | 90% | 47,369 psi | 88% | 2930 fps | 99.6% |
| Bofors RP5 | <<locked>> | 82% | 45,963 psi | 86% | 2874 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 90% | 48,428 psi | 90% | 2933 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 82% | 47,964 psi | 89% | 2867 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 82% | 47,123 psi | 88% | 2851 fps | 98.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 46,499 psi | 87% | 2999 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 70% | 1896 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 47,123 psi | 88% | 2917 fps | 99.3% |
| IMR 8133 Enduron | <<locked>> | 96% | 45,484 psi | 85% | 2917 fps | 99.4% |
| Lovex S071 | <<locked>> | 88% | 47,848 psi | 89% | 2818 fps | 100% |
| Norma 217 | <<locked>> | 96% | 46,209 psi | 86% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 47,572 psi | 89% | 2933 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 86% | 46,166 psi | 86% | 2864 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,667 psi | 72% | 1939 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 46,340 psi | 86% | 2979 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 45,818 psi | 85% | 2940 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 84% | 46,804 psi | 87% | 2808 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 48,515 psi | 90% | 2946 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 86% | 46,195 psi | 86% | 2887 fps | 99% |
| Vihtavuori N568 | <<locked>> | 90% | 46,847 psi | 87% | 2946 fps | 98.3% |
| Vihtavuori N570 | <<locked>> | 92% | 47,790 psi | 89% | 3005 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 84% | 46,456 psi | 87% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 46,325 psi | 86% | 2815 fps | 99.7% |
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% | 42,960 psi | 80% | 2733 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 44,483 psi | 83% | 2871 fps | 98% |
| ADI AR 2213 | <<locked>> | 80% | 42,235 psi | 79% | 2808 fps | 98.5% |
| ADI AR 2217 | <<locked>> | 80% | 31,531 psi | 59% | 2546 fps | 95.2% |
| ADI AR 2218 | 270.4 gr | 94% | 43,743 psi | 82% | 2933 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 28,863 psi | 54% | 2516 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,004 psi | 80% | 2818 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,742 psi | 78% | 2749 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,071 psi | 67% | 2694 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 90% | 41,481 psi | 77% | 2858 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 96% | 44,251 psi | 82% | 2913 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 40,973 psi | 76% | 2720 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 40,016 psi | 75% | 2753 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 33,605 psi | 63% | 2625 fps | 96.4% |
| Bofors RP5 | <<locked>> | 80% | 43,004 psi | 80% | 2818 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 80% | 34,185 psi | 64% | 2625 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 80% | 44,817 psi | 84% | 2808 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,048 psi | 82% | 2792 fps | 98.3% |
| Hodgdon Retumbo | 217.2 gr | 80% | 35,259 psi | 66% | 2740 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 53% | 1696 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 40,959 psi | 76% | 2792 fps | 98.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 32,343 psi | 60% | 2615 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 37,115 psi | 69% | 2612 fps | 99.7% |
| Norma 217 | <<locked>> | 80% | 26,498 psi | 49% | 2457 fps | 95.1% |
| Ramshot Grand | <<locked>> | 80% | 41,017 psi | 76% | 2805 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 80% | 36,883 psi | 69% | 2680 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,080 psi | 54% | 1736 fps | 100% |
| ReloadSwiss RS 76 | 232.4 gr | 80% | 34,418 psi | 64% | 2713 fps | 99.2% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 36,463 psi | 68% | 2733 fps | 96% |
| Vihtavuori N165 | <<locked>> | 80% | 41,017 psi | 76% | 2697 fps | 99.4% |
| Vihtavuori N560 | <<locked>> | 80% | 45,281 psi | 84% | 2884 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 80% | 37,652 psi | 70% | 2703 fps | 97% |
| Vihtavuori N568 | <<locked>> | 84% | 37,826 psi | 70% | 2753 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 90% | 44,469 psi | 83% | 2936 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,856 psi | 74% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,192 psi | 80% | 2753 fps | 99.4% |
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 44 powders for .50 BMG loaded with the .510 | 535gr | Woodleigh RN SN. ADI AR 2218 delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,009 fps. Accurate 8700 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (370 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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. Hodgdon Retumbo, ReloadSwiss RS 76, ADI AR 2218 rank at the top here: for .50 BMG with the .510 | 535gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, IMR 7977 Enduron, Lovex D100 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.