Load Specifications
Load data in caliber .50 BMG with .510 | 600gr | Barnes RNSP bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Alliant Reloder-33.
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 8700ᴾ | <<locked>> | 100% | 48,211 psi | 90% | 2805 fps | 98% |
| ADI AR 2217 | <<locked>> | 88% | 45,571 psi | 85% | 2740 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 92% | 45,208 psi | 84% | 2841 fps | 98.1% |
| ADI AR 2225 | <<locked>> | 92% | 48,196 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 84% | 46,079 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 46,731 psi | 87% | 2828 fps | 98.2% |
| Alliant Reloder-50 | <<locked>> | 94% | 46,630 psi | 87% | 2822 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 47,094 psi | 88% | 2720 fps | 98.3% |
| Bofors RP15 | <<locked>> | 82% | 46,949 psi | 87% | 2746 fps | 100% |
| Bofors RP30 | <<locked>> | 86% | 45,963 psi | 86% | 2756 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 88% | 46,891 psi | 87% | 2762 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 46,137 psi | 86% | 2694 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 86% | 48,472 psi | 90% | 2877 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,000 psi | 71% | 1798 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 94% | 47,630 psi | 89% | 2812 fps | 100% |
| Lovex S071 | <<locked>> | 84% | 46,224 psi | 86% | 2644 fps | 100% |
| Norma 217 | <<locked>> | 92% | 45,440 psi | 85% | 2776 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,001 psi | 73% | 1841 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 48,428 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 47,848 psi | 89% | 2831 fps | 99.6% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,978 psi | 88% | 2759 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 82% | 47,819 psi | 89% | 2684 fps | 100% |
| Vihtavuori N170 | <<locked>> | 86% | 46,818 psi | 87% | 2707 fps | 96.7% |
| Vihtavuori N565 | <<locked>> | 84% | 47,674 psi | 89% | 2769 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 86% | 45,411 psi | 85% | 2776 fps | 99% |
| Vihtavuori N570 | <<locked>> | 88% | 46,470 psi | 87% | 2838 fps | 97.8% |
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 8700 | <<locked>> | 94% | 38,812 psi | 72% | 2618 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 80% | 34,722 psi | 65% | 2510 fps | 98.1% |
| ADI AR 2218 | 253.1 gr | 88% | 39,189 psi | 73% | 2703 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 31,995 psi | 60% | 2487 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,132 psi | 75% | 2635 fps | 100% |
| Alliant Reloder-33 | 246 gr | 84% | 37,434 psi | 70% | 2635 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 90% | 40,263 psi | 75% | 2694 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,179 psi | 82% | 2664 fps | 97.7% |
| Bofors RP15 | <<locked>> | 80% | 43,976 psi | 82% | 2690 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 37,492 psi | 70% | 2585 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 80% | 35,650 psi | 66% | 2533 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 80% | 43,192 psi | 80% | 2638 fps | 99% |
| Hodgdon Retumbo | <<locked>> | 80% | 39,262 psi | 73% | 2700 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,572 psi | 53% | 1608 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 80% | 29,588 psi | 55% | 2408 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 40,741 psi | 76% | 2546 fps | 100% |
| Norma 217 | <<locked>> | 80% | 29,907 psi | 56% | 2434 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,370 psi | 55% | 1647 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,566 psi | 72% | 2674 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 35,462 psi | 66% | 2575 fps | 97% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 40,988 psi | 76% | 2641 fps | 95.6% |
| Vihtavuori N165 | <<locked>> | 80% | 44,788 psi | 83% | 2631 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 40,973 psi | 76% | 2592 fps | 95% |
| Vihtavuori N565 | <<locked>> | 80% | 41,669 psi | 78% | 2654 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 80% | 36,724 psi | 68% | 2592 fps | 96.8% |
| Vihtavuori N570 | 231 gr | 82% | 37,449 psi | 70% | 2641 fps | 95% |
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 33 powders for .50 BMG loaded with the .510 | 600gr | Barnes RNSP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,877 fps; across all powders the maximum-charge window runs from 1,798 fps to 2,877 fps. Accurate 8700 gives the best case fill at 100 %, and 33 of the 33 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. 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for .50 BMG with the .510 | 600gr | Barnes RNSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT 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.