Load Specifications
Load data in caliber .50 BMG with .509 | 750gr | Peregrine Glider GRM bullet and 31 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 29"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 8700ᴾ | <<locked>> | 100% | 47,674 psi | 89% | 2513 fps | 99.2% |
| ADI AR 2217 | <<locked>> | 88% | 45,585 psi | 85% | 2444 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 48,298 psi | 90% | 2612 fps | 99.8% |
| ADI AR 2225 | <<locked>> | 92% | 48,066 psi | 90% | 2516 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 84% | 46,050 psi | 86% | 2434 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 46,383 psi | 86% | 2533 fps | 99.4% |
| Alliant Reloder-50 | <<locked>> | 94% | 45,876 psi | 85% | 2530 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 47,137 psi | 88% | 2428 fps | 99.4% |
| Bofors RP15 | <<locked>> | 82% | 46,847 psi | 87% | 2441 fps | 100% |
| Bofors RP30 | <<locked>> | 86% | 45,730 psi | 85% | 2457 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 46,557 psi | 87% | 2454 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 48,530 psi | 90% | 2562 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,971 psi | 71% | 1558 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 86% | 48,037 psi | 90% | 2385 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 47,268 psi | 88% | 2507 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 47,471 psi | 88% | 2431 fps | 96% |
| Lovex S071 | <<locked>> | 84% | 45,803 psi | 85% | 2343 fps | 100% |
| Norma 217 | <<locked>> | 94% | 48,385 psi | 90% | 2523 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 48,269 psi | 90% | 2552 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 84% | 47,558 psi | 89% | 2441 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,001 psi | 73% | 1598 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 48,283 psi | 90% | 2549 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 47,471 psi | 88% | 2530 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 47,471 psi | 88% | 2431 fps | 96% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,470 psi | 87% | 2467 fps | 98.7% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 43,018 psi | 80% | 2438 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 82% | 47,718 psi | 89% | 2382 fps | 100% |
| Vihtavuori N170 | <<locked>> | 86% | 46,499 psi | 87% | 2418 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 84% | 47,384 psi | 88% | 2464 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 48,428 psi | 90% | 2533 fps | 100% |
| Vihtavuori N570 | <<locked>> | 88% | 46,209 psi | 86% | 2543 fps | 99.1% |
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>> | 90% | 33,286 psi | 62% | 2241 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 80% | 34,519 psi | 64% | 2241 fps | 99.4% |
| ADI AR 2218 | 207.2 gr | 84% | 33,663 psi | 63% | 2310 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 31,749 psi | 59% | 2228 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,059 psi | 75% | 2343 fps | 100% |
| Alliant Reloder-33 | 201 gr | 80% | 31,923 psi | 59% | 2247 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 86% | 34,084 psi | 64% | 2300 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,150 psi | 82% | 2379 fps | 99% |
| Bofors RP15 | <<locked>> | 80% | 43,859 psi | 82% | 2395 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 37,275 psi | 69% | 2310 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 80% | 37,637 psi | 70% | 2303 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 39,233 psi | 73% | 2411 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,529 psi | 53% | 1391 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 42,221 psi | 79% | 2287 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 80% | 29,254 psi | 55% | 2156 fps | 98% |
| Lovex D100 | <<locked>> | 88% | 44,193 psi | 82% | 2375 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 40,306 psi | 75% | 2254 fps | 100% |
| Norma 217 | <<locked>> | 80% | 29,559 psi | 55% | 2178 fps | 99.6% |
| Ramshot LRT | <<locked>> | 92% | 45,049 psi | 84% | 2493 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 80% | 40,959 psi | 76% | 2343 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,327 psi | 55% | 1424 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,334 psi | 71% | 2388 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 35,099 psi | 65% | 2306 fps | 98.6% |
| Shooters World 50 BMG | <<locked>> | 88% | 44,193 psi | 82% | 2375 fps | 95.1% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 35,288 psi | 66% | 2260 fps | 95.8% |
| Vihtavuori 20N29 | <<locked>> | 98% | 40,074 psi | 75% | 2385 fps | 95.7% |
| Vihtavuori N165 | <<locked>> | 80% | 44,701 psi | 83% | 2336 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 37,971 psi | 71% | 2264 fps | 96% |
| Vihtavuori N565 | <<locked>> | 80% | 41,365 psi | 77% | 2365 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 80% | 36,390 psi | 68% | 2320 fps | 98.5% |
| Vihtavuori N570 | 193.3 gr | 80% | 34,592 psi | 64% | 2313 fps | 96.2% |
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 34 powders for .50 BMG loaded with the .509 | 750gr | Peregrine Glider GRM. ADI AR 2218 delivers the highest muzzle velocity at 2,612 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,612 fps. Accurate 8700 gives the best case fill at 100 %, and 34 of the 34 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 0.509" calls for a 1:16.0 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for .50 BMG with the .509 | 750gr | Peregrine Glider GRM 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.