Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 147gr | Hornady ELD Match bullet and 46 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 IMR 8133 Enduron.
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% | 58,334 psi | 90% | 2881 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,360 psi | 84% | 2933 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 82% | 57,551 psi | 89% | 2992 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 84% | 57,957 psi | 89% | 2986 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,885 psi | 89% | 2979 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 58,595 psi | 90% | 3117 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 94% | 57,812 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 58,465 psi | 90% | 2953 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 58,494 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 57,029 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,986 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,405 psi | 87% | 3015 fps | 98.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,884 psi | 88% | 3015 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,841 psi | 89% | 2949 fps | 99.2% |
| Bofors RP15 | <<locked>> | 86% | 57,943 psi | 89% | 2969 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,711 psi | 89% | 2989 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 58,494 psi | 90% | 2979 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 55,172 psi | 85% | 2933 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 56,391 psi | 87% | 2913 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,303 psi | 85% | 2897 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 58,044 psi | 89% | 3061 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,145 psi | 59% | 1890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,260 psi | 87% | 2890 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 56,782 psi | 87% | 2976 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 58,668 psi | 90% | 2907 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,652 psi | 87% | 2986 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 56,724 psi | 87% | 2858 fps | 100% |
| Norma 217 | <<locked>> | 96% | 58,276 psi | 90% | 3005 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 58,421 psi | 90% | 2999 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,782 psi | 87% | 2923 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,160 psi | 60% | 1932 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 58,682 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,798 psi | 89% | 3022 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 58,523 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 56,043 psi | 86% | 2940 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 58,160 psi | 90% | 2943 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 58,537 psi | 90% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 55,245 psi | 85% | 2851 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 58,407 psi | 90% | 2946 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 82% | 58,624 psi | 90% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 58,175 psi | 90% | 3002 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 55,927 psi | 86% | 2943 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 58,015 psi | 89% | 3022 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 90% | 55,680 psi | 86% | 3022 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 58,552 psi | 90% | 2976 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 58,595 psi | 90% | 2917 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% | 51,111 psi | 79% | 2772 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,569 psi | 67% | 2733 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 80% | 53,563 psi | 82% | 2927 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 50,589 psi | 78% | 2864 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 80% | 37,913 psi | 58% | 2608 fps | 97.8% |
| ADI AR 2218 | 77.6 gr | 88% | 43,424 psi | 67% | 2815 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 35,317 psi | 54% | 2582 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 54,955 psi | 85% | 2897 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,314 psi | 79% | 2861 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,995 psi | 77% | 2776 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,222 psi | 68% | 2740 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 42,105 psi | 65% | 2740 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 90% | 45,585 psi | 70% | 2805 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,674 psi | 73% | 2769 fps | 97.5% |
| Bofors RP15 | <<locked>> | 80% | 47,718 psi | 73% | 2795 fps | 99.8% |
| Bofors RP30 | <<locked>> | 80% | 41,350 psi | 64% | 2687 fps | 98.6% |
| Bofors RP5 | <<locked>> | 80% | 51,314 psi | 79% | 2861 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 41,408 psi | 64% | 2687 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 80% | 52,678 psi | 81% | 2854 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,866 psi | 80% | 2841 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,468 psi | 67% | 2805 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,660 psi | 44% | 1686 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,910 psi | 81% | 2835 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 80% | 49,342 psi | 76% | 2848 fps | 99.6% |
| IMR 7977 Enduron | <<locked>> | 86% | 51,561 psi | 79% | 2789 fps | 95.3% |
| IMR 8133 Enduron | 64.8 gr | 80% | 32,924 psi | 51% | 2500 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 44,208 psi | 68% | 2651 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,475 psi | 52% | 2526 fps | 98% |
| Ramshot Grand | <<locked>> | 80% | 50,531 psi | 78% | 2871 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 45,440 psi | 70% | 2736 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,617 psi | 46% | 1732 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 43,250 psi | 67% | 2785 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,784 psi | 61% | 2677 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 80% | 54,665 psi | 84% | 2887 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,643 psi | 70% | 2753 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 54,331 psi | 84% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 55,027 psi | 85% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 48,501 psi | 75% | 2743 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 47,732 psi | 73% | 2759 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 55,042 psi | 85% | 2858 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 54,157 psi | 83% | 2936 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 80% | 45,716 psi | 70% | 2759 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 80% | 40,683 psi | 63% | 2690 fps | 96.6% |
| Vihtavuori N570 | 72.6 gr | 84% | 44,918 psi | 69% | 2815 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,589 psi | 78% | 2858 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 51,126 psi | 79% | 2799 fps | 100% |
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 46 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 147gr | Hornady ELD Match. ADI AR 2218 delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,117 fps. Accurate 8700 gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 147.0 gr projectile in 0.264" calls for a 1:8.5 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, IMR 8133 Enduron rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 147gr | Hornady ELD Match 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.