Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 140gr | Nosler Ballistic Tip 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 Hodgdon Retumbo, ADI AR 2218 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% | 57,058 psi | 88% | 2923 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,837 psi | 81% | 2963 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 82% | 56,130 psi | 86% | 3031 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 57,711 psi | 89% | 3009 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,637 psi | 87% | 3028 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 92% | 56,275 psi | 87% | 3015 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 57,029 psi | 88% | 3146 fps | 99% |
| ADI AR 2225 | <<locked>> | 94% | 56,217 psi | 87% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,348 psi | 88% | 2995 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,203 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,622 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,521 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,926 psi | 85% | 3048 fps | 98.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,259 psi | 85% | 3045 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,782 psi | 87% | 2989 fps | 98.8% |
| Bofors RP15 | <<locked>> | 86% | 56,652 psi | 87% | 3012 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,420 psi | 87% | 3028 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,203 psi | 88% | 3022 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,638 psi | 89% | 3031 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,259 psi | 85% | 2959 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,943 psi | 89% | 2999 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,318 psi | 87% | 3097 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,159 psi | 59% | 1936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,303 psi | 85% | 2933 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 84% | 55,463 psi | 85% | 3015 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,653 psi | 89% | 2949 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,187 psi | 85% | 3025 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,521 psi | 85% | 2904 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,710 psi | 87% | 3048 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,566 psi | 89% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,869 psi | 88% | 3038 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,216 psi | 85% | 2963 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,131 psi | 60% | 1978 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 57,043 psi | 88% | 3084 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,130 psi | 86% | 3054 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 57,841 psi | 89% | 2976 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,363 psi | 88% | 2992 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,636 psi | 84% | 2969 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,000 psi | 88% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,406 psi | 88% | 2956 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,566 psi | 89% | 2946 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 57,159 psi | 88% | 2982 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 57,232 psi | 88% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,826 psi | 87% | 3045 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 58,247 psi | 90% | 3041 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 56,536 psi | 87% | 3058 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 58,044 psi | 89% | 3123 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,058 psi | 88% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,377 psi | 88% | 2956 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% | 49,893 psi | 77% | 2812 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,571 psi | 70% | 2825 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 80% | 52,315 psi | 81% | 2966 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 53,940 psi | 83% | 2949 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,298 psi | 76% | 2897 fps | 99.4% |
| ADI AR 2217 | <<locked>> | 80% | 37,028 psi | 57% | 2638 fps | 97% |
| ADI AR 2218 | 80.4 gr | 90% | 45,527 psi | 70% | 2917 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 34,389 psi | 53% | 2608 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,708 psi | 83% | 2936 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,038 psi | 77% | 2900 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,762 psi | 75% | 2818 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,946 psi | 66% | 2772 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,888 psi | 68% | 2831 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,703 psi | 73% | 2900 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,572 psi | 72% | 2802 fps | 96.8% |
| Bofors RP15 | <<locked>> | 80% | 46,717 psi | 72% | 2835 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,176 psi | 62% | 2713 fps | 97.9% |
| Bofors RP5 | <<locked>> | 80% | 50,038 psi | 77% | 2900 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,393 psi | 62% | 2720 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 80% | 51,663 psi | 80% | 2894 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,647 psi | 78% | 2877 fps | 99.2% |
| Hodgdon Retumbo | 67.5 gr | 80% | 42,264 psi | 65% | 2838 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,631 psi | 44% | 1729 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,837 psi | 80% | 2874 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 80% | 48,211 psi | 74% | 2887 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,983 psi | 83% | 2887 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,287 psi | 53% | 2585 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 43,178 psi | 66% | 2690 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,503 psi | 50% | 2552 fps | 97.1% |
| Norma MRP | <<locked>> | 80% | 53,577 psi | 82% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 49,008 psi | 75% | 2904 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 44,251 psi | 68% | 2772 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,399 psi | 45% | 1768 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,901 psi | 64% | 2812 fps | 99.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,595 psi | 59% | 2700 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 54,360 psi | 84% | 2920 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 80% | 53,635 psi | 83% | 2933 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,703 psi | 73% | 2844 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,287 psi | 82% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,795 psi | 83% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,384 psi | 73% | 2779 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 49,980 psi | 77% | 2858 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 80% | 53,766 psi | 83% | 2900 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,910 psi | 81% | 2976 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 80% | 44,440 psi | 68% | 2789 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 80% | 39,566 psi | 61% | 2717 fps | 95.6% |
| Vihtavuori N570 | 75.3 gr | 86% | 46,963 psi | 72% | 2917 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,110 psi | 76% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,893 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 | Nosler Ballistic Tip 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 1:9.5 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 140gr | Nosler Ballistic Tip 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.