Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 140gr | Berger VLD Target 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, Hodgdon Retumbo and Vihtavuori N570.
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% | 56,956 psi | 88% | 2923 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,721 psi | 81% | 2959 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 82% | 56,014 psi | 86% | 3031 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 82% | 57,609 psi | 89% | 3005 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,521 psi | 87% | 3028 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 92% | 56,130 psi | 86% | 3015 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,913 psi | 88% | 3146 fps | 99% |
| ADI AR 2225 | <<locked>> | 94% | 56,072 psi | 86% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,246 psi | 88% | 2995 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,101 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,680 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,376 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,853 psi | 84% | 3048 fps | 98.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,143 psi | 85% | 3041 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,695 psi | 87% | 2989 fps | 98.8% |
| Bofors RP15 | <<locked>> | 86% | 56,753 psi | 87% | 3015 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,304 psi | 87% | 3028 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,101 psi | 88% | 3022 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,551 psi | 89% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,172 psi | 85% | 2956 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,827 psi | 89% | 3002 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,159 psi | 86% | 3100 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,029 psi | 59% | 1932 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,172 psi | 85% | 2933 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 55,361 psi | 85% | 3015 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,551 psi | 89% | 2949 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 58,769 psi | 90% | 3081 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,405 psi | 85% | 2900 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,565 psi | 87% | 3045 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,464 psi | 88% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,739 psi | 87% | 3038 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,347 psi | 85% | 2966 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,175 psi | 60% | 1982 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,898 psi | 88% | 3081 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,057 psi | 86% | 3054 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 57,725 psi | 89% | 2976 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,261 psi | 88% | 2992 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,563 psi | 84% | 2969 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,898 psi | 88% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,508 psi | 89% | 2959 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,667 psi | 89% | 2949 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 57,043 psi | 88% | 2982 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 57,348 psi | 88% | 2956 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,710 psi | 87% | 3041 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 58,131 psi | 89% | 3041 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 56,391 psi | 87% | 3054 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 57,943 psi | 89% | 3123 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,898 psi | 88% | 3022 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,232 psi | 88% | 2959 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% | 49,763 psi | 77% | 2812 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,455 psi | 70% | 2825 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 80% | 52,388 psi | 81% | 2969 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 54,027 psi | 83% | 2949 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,385 psi | 76% | 2900 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 36,941 psi | 57% | 2638 fps | 97% |
| ADI AR 2218 | 80.3 gr | 90% | 45,440 psi | 70% | 2913 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 34,287 psi | 53% | 2608 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,606 psi | 83% | 2940 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,125 psi | 77% | 2904 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,820 psi | 75% | 2822 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,018 psi | 66% | 2776 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,961 psi | 68% | 2835 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,630 psi | 73% | 2900 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,644 psi | 72% | 2805 fps | 96.8% |
| Bofors RP15 | <<locked>> | 80% | 46,630 psi | 72% | 2835 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,074 psi | 62% | 2713 fps | 97.9% |
| Bofors RP5 | <<locked>> | 80% | 50,125 psi | 77% | 2904 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,306 psi | 62% | 2717 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 80% | 51,547 psi | 79% | 2894 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,734 psi | 78% | 2881 fps | 99.2% |
| Hodgdon Retumbo | 67.4 gr | 80% | 42,163 psi | 65% | 2838 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,660 psi | 44% | 1732 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,909 psi | 80% | 2877 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 80% | 48,109 psi | 74% | 2884 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,911 psi | 83% | 2887 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,185 psi | 53% | 2582 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 43,091 psi | 66% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,387 psi | 50% | 2549 fps | 97.1% |
| Norma MRP | <<locked>> | 80% | 53,476 psi | 82% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 49,110 psi | 76% | 2907 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 44,150 psi | 68% | 2772 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,428 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,756 psi | 64% | 2812 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,464 psi | 59% | 2697 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 54,259 psi | 84% | 2920 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 53,519 psi | 82% | 2930 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,616 psi | 73% | 2841 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,171 psi | 82% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,882 psi | 83% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,268 psi | 73% | 2779 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 49,879 psi | 77% | 2854 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 80% | 53,635 psi | 83% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,823 psi | 81% | 2972 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 44,527 psi | 69% | 2795 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 39,479 psi | 61% | 2717 fps | 95.6% |
| Vihtavuori N570 | 75.2 gr | 86% | 46,833 psi | 72% | 2913 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,023 psi | 75% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,995 psi | 77% | 2838 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 | Berger VLD Target. ADI AR 2218 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,146 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 59–90 %, leaving at least 10 % headroom. The 140.0 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, Hodgdon Retumbo, Vihtavuori N570 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 140gr | Berger VLD Target 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.