Load Specifications
Load data in caliber .500 Jeffery Riml. with .510 | 700gr | Barnes RNSP bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 40,843 psi | 88% | 2041 fps | 98.3% |
| Accurate 4350 | <<locked>> | 88% | 40,611 psi | 88% | 2041 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 40,059 psi | 86% | 2051 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 39,668 psi | 85% | 2064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 41,756 psi | 90% | 2064 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 41,307 psi | 89% | 2100 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,553 psi | 90% | 2103 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,608 psi | 79% | 2037 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,306 psi | 87% | 2146 fps | 99.4% |
| Bofors RP5 | <<locked>> | 98% | 41,307 psi | 89% | 2100 fps | 96% |
| Bofors RP7 | <<locked>> | 84% | 40,712 psi | 88% | 1969 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 40,364 psi | 87% | 2037 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 84% | 41,292 psi | 89% | 2008 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 41,959 psi | 90% | 2037 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 39,624 psi | 85% | 2051 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 78% | 1276 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,901 psi | 88% | 1995 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,827 psi | 86% | 1955 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 41,684 psi | 90% | 2044 fps | 99.6% |
| Lovex S065 | <<locked>> | 86% | 41,930 psi | 90% | 1995 fps | 98.7% |
| Lovex S070 | <<locked>> | 86% | 39,943 psi | 86% | 1982 fps | 97.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,376 psi | 78% | 1969 fps | 97.3% |
| Norma MRP | <<locked>> | 96% | 40,567 psi | 87% | 2116 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 40,538 psi | 87% | 2037 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 90% | 41,989 psi | 90% | 2073 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 79% | 1309 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 39,523 psi | 85% | 2060 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,161 psi | 87% | 2060 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 39,798 psi | 86% | 2070 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 82% | 40,306 psi | 87% | 1985 fps | 100% |
| Rottweil R 905 | <<locked>> | 94% | 40,422 psi | 87% | 2047 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 84% | 40,712 psi | 88% | 1969 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,930 psi | 90% | 1995 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 86% | 39,943 psi | 86% | 1982 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 41,263 psi | 89% | 2028 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,365 psi | 89% | 1952 fps | 97.4% |
| Somchem S355 | <<locked>> | 82% | 40,973 psi | 88% | 1988 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 41,321 psi | 89% | 2080 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 41,031 psi | 88% | 2034 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 84% | 41,524 psi | 89% | 1969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 39,653 psi | 85% | 1995 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 98% | 40,335 psi | 87% | 2014 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 88% | 41,597 psi | 90% | 2041 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 96% | 40,422 psi | 87% | 2080 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,771 psi | 90% | 2014 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,437 psi | 87% | 2037 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,115 psi | 80% | 2133 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 31,270 psi | 67% | 1880 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 30,966 psi | 67% | 1873 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,314 psi | 67% | 1883 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,809 psi | 75% | 1978 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 39,349 psi | 85% | 2021 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 38,783 psi | 84% | 2054 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 24,149 psi | 52% | 1745 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 30,560 psi | 66% | 1909 fps | 95.3% |
| Alliant Reloder-26 | 114.3 gr | 86% | 28,776 psi | 62% | 1913 fps | 95.7% |
| Bofors RP5 | <<locked>> | 96% | 38,783 psi | 84% | 2054 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 36,071 psi | 78% | 1890 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 33,199 psi | 72% | 1909 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 38,798 psi | 84% | 1969 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,819 psi | 62% | 1808 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 84% | 36,956 psi | 80% | 2005 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 58% | 1138 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 36,143 psi | 78% | 1916 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,420 psi | 81% | 1913 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 30,197 psi | 65% | 1844 fps | 97.1% |
| Lovex S065 | <<locked>> | 80% | 35,012 psi | 75% | 1880 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 33,141 psi | 71% | 1860 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 30,110 psi | 65% | 1854 fps | 95.1% |
| Norma MRP | 118.7 gr | 92% | 35,607 psi | 77% | 2024 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,328 psi | 68% | 1873 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 82% | 32,547 psi | 70% | 1906 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 59% | 1165 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,043 psi | 80% | 2021 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,647 psi | 66% | 1886 fps | 96.9% |
| ReloadSwiss RS 70 | 105.4 gr | 80% | 30,632 psi | 66% | 1890 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 37,768 psi | 81% | 1946 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 92% | 37,971 psi | 82% | 2005 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 36,071 psi | 78% | 1890 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,012 psi | 75% | 1880 fps | 97.1% |
| Shooters World SW4350 | <<locked>> | 80% | 33,141 psi | 71% | 1860 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,566 psi | 83% | 1988 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 34,026 psi | 73% | 1834 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 38,508 psi | 83% | 1949 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 28,152 psi | 61% | 1844 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 36,129 psi | 78% | 1955 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 36,579 psi | 79% | 1896 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 32,677 psi | 70% | 1873 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 37,869 psi | 82% | 1975 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 32,198 psi | 69% | 1877 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 24,221 psi | 52% | 1759 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,155 psi | 69% | 1857 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 33,272 psi | 72% | 1913 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 23,946 psi | 52% | 1804 fps | 96.3% |
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 47 powders for .500 Jeffery Riml. loaded with the .510 | 700gr | Barnes RNSP. Alliant Reloder-26 delivers the highest muzzle velocity at 2,146 fps; across all powders the maximum-charge window runs from 1,276 fps to 2,146 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 78–90 %, leaving at least 10 % headroom. Alliant Reloder-23, Alliant Reloder-25, Hodgdon TrailBoss 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 Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .500 Jeffery Riml. with the .510 | 700gr | Barnes RNSP they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.