Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 140gr | Ferrobull Tripple Expand Jagd bullet and 49 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 84% | 57,145 psi | 88% | 2933 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,751 psi | 83% | 2982 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 82% | 56,811 psi | 87% | 3051 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 82% | 58,305 psi | 90% | 3025 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 57,363 psi | 88% | 3045 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,217 psi | 88% | 3035 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 58,030 psi | 89% | 3166 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 94% | 57,058 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,841 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,769 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,260 psi | 87% | 2940 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,305 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,840 psi | 86% | 3068 fps | 98.6% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,956 psi | 86% | 3058 fps | 98.2% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,392 psi | 88% | 3009 fps | 99% |
| Bofors RP15 | <<locked>> | 86% | 57,421 psi | 88% | 3028 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,956 psi | 88% | 3045 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,769 psi | 89% | 3035 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 58,653 psi | 90% | 3054 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,883 psi | 86% | 2976 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 58,566 psi | 90% | 3018 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,290 psi | 88% | 3117 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,971 psi | 58% | 1946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,738 psi | 86% | 2949 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 56,173 psi | 86% | 3031 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 58,262 psi | 90% | 2969 fps | 96.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,796 psi | 86% | 3038 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,811 psi | 86% | 2913 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,551 psi | 89% | 3061 fps | 100% |
| Norma MRP | <<locked>> | 82% | 58,131 psi | 89% | 3051 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,783 psi | 89% | 3058 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,985 psi | 86% | 2979 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,088 psi | 60% | 1991 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 58,146 psi | 89% | 3097 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,869 psi | 88% | 3071 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 58,378 psi | 90% | 2995 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,841 psi | 89% | 3009 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,506 psi | 85% | 2992 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,479 psi | 88% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,914 psi | 89% | 2972 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 58,247 psi | 90% | 2966 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 57,595 psi | 89% | 2999 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 57,580 psi | 89% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 57,392 psi | 88% | 3058 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 54,984 psi | 85% | 2995 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 57,159 psi | 88% | 3074 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 90% | 54,839 psi | 84% | 3071 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,682 psi | 89% | 3031 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,841 psi | 89% | 2972 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>> | 80% | 49,995 psi | 77% | 2822 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 46,224 psi | 71% | 2841 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 80% | 52,953 psi | 81% | 2982 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 80% | 54,534 psi | 84% | 2966 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,792 psi | 77% | 2917 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 37,159 psi | 57% | 2648 fps | 97.2% |
| ADI AR 2218 | 81.1 gr | 88% | 42,859 psi | 66% | 2858 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 34,505 psi | 53% | 2615 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 54,244 psi | 83% | 2953 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,415 psi | 78% | 2913 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,197 psi | 76% | 2831 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,366 psi | 67% | 2782 fps | 100% |
| Alliant Reloder-33 | 80.7 gr | 86% | 44,483 psi | 68% | 2848 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 90% | 44,599 psi | 69% | 2838 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,036 psi | 72% | 2822 fps | 97.1% |
| Bofors RP15 | <<locked>> | 80% | 46,920 psi | 72% | 2844 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,393 psi | 62% | 2723 fps | 98% |
| Bofors RP5 | <<locked>> | 80% | 50,415 psi | 78% | 2913 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,727 psi | 63% | 2733 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 52,098 psi | 80% | 2913 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,082 psi | 79% | 2894 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,743 psi | 66% | 2851 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,558 psi | 44% | 1742 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,301 psi | 80% | 2890 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 48,733 psi | 75% | 2900 fps | 99.4% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,607 psi | 84% | 2907 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,345 psi | 53% | 2589 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 42,960 psi | 66% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,416 psi | 50% | 2549 fps | 97.1% |
| Norma MRP | <<locked>> | 80% | 54,157 psi | 83% | 2986 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 49,676 psi | 76% | 2920 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 44,585 psi | 69% | 2782 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 45% | 1785 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,496 psi | 65% | 2825 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,827 psi | 60% | 2707 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 54,708 psi | 84% | 2936 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 54,128 psi | 83% | 2946 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,976 psi | 69% | 2792 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,780 psi | 83% | 2946 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 54,099 psi | 83% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,674 psi | 73% | 2792 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 46,920 psi | 72% | 2805 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 53,940 psi | 83% | 2910 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 53,519 psi | 82% | 2992 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 44,744 psi | 69% | 2802 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 39,827 psi | 61% | 2726 fps | 95.8% |
| Vihtavuori N570 | 75.8 gr | 84% | 44,063 psi | 68% | 2854 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,559 psi | 76% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,401 psi | 78% | 2851 fps | 99.9% |
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 49 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 140gr | Ferrobull Tripple Expand Jagd. ADI AR 2218 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,946 fps to 3,166 fps. Accurate 8700 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:10.0 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 6.5-300 Weatherby Mag. with the .264 | 140gr | Ferrobull Tripple Expand Jagd 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.