Load Specifications
Load data in caliber .510 Whisper with .510 | 600gr | Barnes RNSP bullet and 40 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, SNPE Vectan SP 10 and ADI AR 2219.
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: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 44,802 psi | 90% | 1719 fps | 99.8% |
| Accurate 2015 | <<locked>> | 96% | 44,556 psi | 89% | 1775 fps | 99.4% |
| Accurate 2460 | <<locked>> | 92% | 42,873 psi | 86% | 1772 fps | 96.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,174 psi | 76% | 1752 fps | 98.7% |
| Accurate 2520 | <<locked>> | 96% | 42,467 psi | 85% | 1798 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 86% | 43,294 psi | 87% | 1696 fps | 98.2% |
| Accurate LT-32 | <<locked>> | 86% | 43,729 psi | 87% | 1699 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 84% | 42,786 psi | 86% | 1729 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 43,018 psi | 86% | 1781 fps | 98% |
| Alliant AR-Comp | <<locked>> | 98% | 43,685 psi | 87% | 1827 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 42,844 psi | 86% | 1762 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 84% | 44,237 psi | 88% | 1732 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 43,700 psi | 87% | 1722 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 92% | 44,498 psi | 89% | 1801 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 92% | 45,092 psi | 90% | 1814 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 84% | 44,889 psi | 90% | 1722 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,343 psi | 65% | 1079 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,295 psi | 89% | 1847 fps | 98.9% |
| IMR 4198 | <<locked>> | 90% | 44,860 psi | 90% | 1752 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 43,830 psi | 88% | 1781 fps | 96.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,062 psi | 86% | 1814 fps | 96.2% |
| Norma 200 | <<locked>> | 86% | 42,931 psi | 86% | 1749 fps | 99.9% |
| Norma 202ᴾ | <<locked>> | 100% | 44,918 psi | 90% | 1814 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,271 psi | 64% | 1106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 44,222 psi | 88% | 1781 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 96% | 43,976 psi | 88% | 1772 fps | 97% |
| Shooters World AR Plus | <<locked>> | 86% | 43,830 psi | 88% | 1781 fps | 96.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,062 psi | 86% | 1814 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 43,497 psi | 87% | 1565 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 43,337 psi | 87% | 1785 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 43,685 psi | 87% | 1765 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 43,395 psi | 87% | 1726 fps | 96.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,146 psi | 78% | 1686 fps | 96.9% |
| Somchem S335 | <<locked>> | 98% | 44,411 psi | 89% | 1759 fps | 98% |
| Vihtavuori N120 | <<locked>> | 84% | 42,946 psi | 86% | 1703 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 43,569 psi | 87% | 1732 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 98% | 45,237 psi | 90% | 1762 fps | 99.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,958 psi | 80% | 1762 fps | 98.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,583 psi | 85% | 1768 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,930 psi | 82% | 1759 fps | 96.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 41,901 psi | 84% | 1683 fps | 99.6% |
| Accurate 2015 | <<locked>> | 82% | 29,037 psi | 58% | 1549 fps | 95.7% |
| Accurate 2460 | <<locked>> | 88% | 37,550 psi | 75% | 1699 fps | 95.2% |
| Accurate 2495 | <<locked>> | 90% | 27,543 psi | 55% | 1581 fps | 95.5% |
| Accurate 2520 | <<locked>> | 94% | 39,798 psi | 80% | 1762 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 36,114 psi | 72% | 1598 fps | 96.5% |
| Accurate LT-32 | <<locked>> | 82% | 38,725 psi | 77% | 1631 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 37,840 psi | 76% | 1663 fps | 100% |
| ADI AR 2219 | 61 gr | 80% | 33,199 psi | 66% | 1634 fps | 95.1% |
| Alliant AR-Comp | 57.1 gr | 80% | 25,135 psi | 50% | 1516 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,604 psi | 63% | 1594 fps | 97.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,146 psi | 78% | 1667 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,055 psi | 68% | 1588 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 84% | 34,606 psi | 69% | 1660 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 86% | 36,985 psi | 74% | 1703 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 39,871 psi | 80% | 1657 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,830 psi | 48% | 961 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 30,676 psi | 61% | 1634 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 33,736 psi | 67% | 1598 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 84% | 40,872 psi | 82% | 1742 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 98% | 40,306 psi | 81% | 1778 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 35,737 psi | 71% | 1650 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 37,405 psi | 75% | 1713 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,743 psi | 47% | 984 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 41,553 psi | 83% | 1749 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 90% | 36,985 psi | 74% | 1673 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 84% | 40,872 psi | 82% | 1742 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,306 psi | 81% | 1778 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,292 psi | 83% | 1542 fps | 100% |
| SNPE Vectan SP 10 | 66.3 gr | 84% | 38,087 psi | 76% | 1713 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,314 psi | 65% | 1598 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 38,493 psi | 77% | 1660 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 34,766 psi | 69% | 1621 fps | 95.6% |
| Somchem S335 | <<locked>> | 88% | 33,069 psi | 66% | 1598 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 37,956 psi | 76% | 1640 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,603 psi | 61% | 1542 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 28,282 psi | 57% | 1512 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 88% | 27,804 psi | 56% | 1562 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 94% | 35,578 psi | 71% | 1670 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 98% | 38,450 psi | 77% | 1722 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 69 powders for .510 Whisper loaded with the .510 | 600gr | Barnes RNSP. IMR 3031 delivers the highest muzzle velocity at 1,847 fps; across all powders the maximum-charge window runs from 1,079 fps to 1,847 fps. Accurate 2495 gives the best case fill at 100 %, and 69 of the 69 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (345 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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. Alliant AR-Comp, SNPE Vectan SP 10, ADI AR 2219 rank at the top here: for .510 Whisper with the .510 | 600gr | Barnes RNSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2206H burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.