Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 140gr | Berger VLD Hunting 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 ReloadSwiss RS 80.
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% | 56,782 psi | 87% | 2920 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,823 psi | 81% | 2963 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 82% | 56,086 psi | 86% | 3031 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 57,653 psi | 89% | 3009 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,594 psi | 87% | 3028 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 92% | 56,188 psi | 86% | 3015 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,768 psi | 87% | 3146 fps | 99% |
| ADI AR 2225 | <<locked>> | 94% | 55,927 psi | 86% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,290 psi | 88% | 2999 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,145 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,521 psi | 85% | 2927 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,420 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,897 psi | 84% | 3048 fps | 98.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,998 psi | 85% | 3041 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,550 psi | 87% | 2986 fps | 98.8% |
| Bofors RP15 | <<locked>> | 86% | 56,608 psi | 87% | 3012 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,391 psi | 87% | 3028 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,145 psi | 88% | 3022 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,580 psi | 89% | 3035 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,216 psi | 85% | 2956 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,899 psi | 89% | 3002 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,202 psi | 86% | 3100 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,058 psi | 59% | 1936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,245 psi | 85% | 2933 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 55,201 psi | 85% | 3009 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,392 psi | 88% | 2943 fps | 96.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,897 psi | 84% | 3018 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,463 psi | 85% | 2900 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,623 psi | 87% | 3048 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,508 psi | 89% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,797 psi | 87% | 3038 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,129 psi | 85% | 2963 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,204 psi | 60% | 1982 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,956 psi | 88% | 3084 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,086 psi | 86% | 3054 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 57,783 psi | 89% | 2979 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,058 psi | 88% | 2989 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,607 psi | 84% | 2969 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,695 psi | 87% | 2986 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,348 psi | 88% | 2956 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,522 psi | 89% | 2949 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,898 psi | 88% | 2979 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 57,174 psi | 88% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,782 psi | 87% | 3041 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 58,218 psi | 90% | 3041 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 56,478 psi | 87% | 3058 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 57,972 psi | 89% | 3123 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,724 psi | 87% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,087 psi | 88% | 2953 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% | 49,835 psi | 77% | 2812 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,513 psi | 70% | 2825 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 80% | 52,243 psi | 80% | 2966 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 53,867 psi | 83% | 2946 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,211 psi | 76% | 2900 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 36,970 psi | 57% | 2638 fps | 97% |
| ADI AR 2218 | 80.3 gr | 90% | 45,469 psi | 70% | 2917 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 34,330 psi | 53% | 2612 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,650 psi | 83% | 2936 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,980 psi | 77% | 2900 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,675 psi | 75% | 2818 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,873 psi | 66% | 2772 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,816 psi | 67% | 2831 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,500 psi | 73% | 2897 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,499 psi | 72% | 2802 fps | 96.8% |
| Bofors RP15 | <<locked>> | 80% | 46,659 psi | 72% | 2835 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,118 psi | 62% | 2717 fps | 97.9% |
| Bofors RP5 | <<locked>> | 80% | 49,980 psi | 77% | 2900 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,176 psi | 62% | 2713 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 80% | 51,605 psi | 79% | 2897 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,589 psi | 78% | 2877 fps | 99.2% |
| Hodgdon Retumbo | 67.4 gr | 80% | 42,192 psi | 65% | 2838 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,674 psi | 44% | 1732 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,779 psi | 80% | 2874 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 80% | 48,153 psi | 74% | 2884 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,954 psi | 83% | 2887 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,229 psi | 53% | 2585 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 43,120 psi | 66% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,430 psi | 50% | 2552 fps | 97.1% |
| Norma MRP | <<locked>> | 80% | 53,519 psi | 82% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,950 psi | 75% | 2907 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 44,179 psi | 68% | 2772 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,814 psi | 64% | 2815 fps | 99.9% |
| ReloadSwiss RS 80 | 72.7 gr | 80% | 38,508 psi | 59% | 2700 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 54,070 psi | 83% | 2917 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 53,563 psi | 82% | 2930 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,456 psi | 73% | 2841 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,214 psi | 82% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,737 psi | 83% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,297 psi | 73% | 2779 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 49,719 psi | 77% | 2854 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 53,693 psi | 83% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,866 psi | 81% | 2976 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 44,382 psi | 68% | 2792 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 39,523 psi | 61% | 2720 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 86% | 46,688 psi | 72% | 2910 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,008 psi | 75% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,835 psi | 77% | 2835 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 Hunting. ADI AR 2218 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,936 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, ReloadSwiss RS 80 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 140gr | Berger VLD Hunting 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.