Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 130gr | Berger AR Hybrid OTM Tactical bullet and 51 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 Hodgdon Retumbo.
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>> | 86% | 58,668 psi | 90% | 3045 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 50,082 psi | 77% | 2995 fps | 96.1% |
| Accurate High Country | <<locked>> | 82% | 56,753 psi | 87% | 3146 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 84% | 57,827 psi | 89% | 3156 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 82% | 55,637 psi | 86% | 3071 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 58,175 psi | 90% | 3150 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 57,740 psi | 89% | 3133 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 58,508 psi | 90% | 3261 fps | 98.7% |
| ADI AR 2225 | <<locked>> | 96% | 57,232 psi | 88% | 3153 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,332 psi | 85% | 3061 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 58,682 psi | 90% | 3143 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,101 psi | 88% | 3048 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,725 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,972 psi | 89% | 3133 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 56,260 psi | 87% | 3163 fps | 98% |
| Alliant Reloder-50 | <<locked>> | 98% | 56,333 psi | 87% | 3153 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 58,363 psi | 90% | 3107 fps | 98.6% |
| Bofors RP15 | <<locked>> | 88% | 58,073 psi | 89% | 3130 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 57,537 psi | 89% | 3140 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 58,682 psi | 90% | 3143 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,100 psi | 85% | 3091 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,898 psi | 88% | 3077 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,782 psi | 86% | 3061 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 90% | 57,537 psi | 89% | 3219 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 58% | 2005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,014 psi | 88% | 3054 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 86% | 56,898 psi | 88% | 3136 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 56,072 psi | 86% | 3133 fps | 99.9% |
| Lovex S071 | <<locked>> | 90% | 56,811 psi | 87% | 3018 fps | 100% |
| Norma 217 | <<locked>> | 98% | 57,725 psi | 89% | 3159 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,143 psi | 85% | 3097 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 58,465 psi | 90% | 3159 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 56,869 psi | 88% | 3081 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,030 psi | 60% | 2051 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 58,537 psi | 90% | 3202 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 57,580 psi | 89% | 3169 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 82% | 55,927 psi | 86% | 3041 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 82% | 55,056 psi | 85% | 3054 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,127 psi | 80% | 3009 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 58,436 psi | 90% | 3107 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,261 psi | 88% | 3031 fps | 99.6% |
| Somchem S385 | <<locked>> | 82% | 55,361 psi | 85% | 3018 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,593 psi | 86% | 3012 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 58,581 psi | 90% | 3094 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 55,085 psi | 85% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 58,436 psi | 90% | 3166 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 88% | 55,883 psi | 86% | 3097 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 92% | 57,914 psi | 89% | 3173 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 92% | 55,187 psi | 85% | 3166 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 58,073 psi | 89% | 3136 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,172 psi | 85% | 3018 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% | 47,993 psi | 74% | 2871 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 46,644 psi | 72% | 2930 fps | 95% |
| Accurate High Country | <<locked>> | 80% | 52,866 psi | 81% | 3077 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 80% | 50,053 psi | 77% | 3012 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 52,025 psi | 80% | 3009 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 47,311 psi | 73% | 2949 fps | 98.6% |
| ADI AR 2217 | <<locked>> | 80% | 35,288 psi | 54% | 2671 fps | 95.4% |
| ADI AR 2218 | 83.2 gr | 92% | 46,615 psi | 72% | 3022 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 32,619 psi | 50% | 2638 fps | 97.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,851 psi | 80% | 2999 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,066 psi | 74% | 2953 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,804 psi | 72% | 2881 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,002 psi | 63% | 2825 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 53,882 psi | 83% | 3071 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 44,962 psi | 69% | 2940 fps | 95% |
| Alliant Reloder-50 | <<locked>> | 94% | 48,660 psi | 75% | 3005 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,875 psi | 69% | 2851 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 44,701 psi | 69% | 2884 fps | 98.9% |
| Bofors RP30 | <<locked>> | 80% | 38,363 psi | 59% | 2756 fps | 96.6% |
| Bofors RP5 | <<locked>> | 80% | 48,066 psi | 74% | 2953 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 38,435 psi | 59% | 2756 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 80% | 49,574 psi | 76% | 2949 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,776 psi | 75% | 2933 fps | 98.4% |
| Hodgdon Retumbo | 68.3 gr | 80% | 40,016 psi | 62% | 2874 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,529 psi | 44% | 1795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,169 psi | 77% | 2933 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 80% | 46,195 psi | 71% | 2936 fps | 98.4% |
| IMR 8133 Enduron | <<locked>> | 86% | 37,376 psi | 58% | 2746 fps | 96% |
| Lovex S071 | <<locked>> | 80% | 41,394 psi | 64% | 2740 fps | 99.7% |
| Norma 217 | <<locked>> | 80% | 30,589 psi | 47% | 2575 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 51,314 psi | 79% | 3031 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,717 psi | 72% | 2949 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 80% | 42,119 psi | 65% | 2815 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,254 psi | 45% | 1834 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,581 psi | 61% | 2848 fps | 99.4% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 39,479 psi | 61% | 2802 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 52,402 psi | 81% | 2979 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 51,474 psi | 79% | 2989 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 48,718 psi | 75% | 2946 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,126 psi | 79% | 2986 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 53,577 psi | 82% | 2969 fps | 99.2% |
| Somchem S385 | <<locked>> | 80% | 51,866 psi | 80% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,600 psi | 70% | 2835 fps | 99.4% |
| Vihtavuori N170 | <<locked>> | 88% | 51,285 psi | 79% | 2966 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 51,576 psi | 79% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,749 psi | 78% | 3028 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 80% | 42,511 psi | 65% | 2835 fps | 97.2% |
| Vihtavuori N568 | <<locked>> | 82% | 40,480 psi | 62% | 2822 fps | 95.1% |
| Vihtavuori N570 | 78 gr | 88% | 47,863 psi | 74% | 3022 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,485 psi | 72% | 2953 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,022 psi | 74% | 2890 fps | 99.5% |
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 51 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 130gr | Berger AR Hybrid OTM Tactical. ADI AR 2218 delivers the highest muzzle velocity at 3,261 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,261 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 130.0 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. ADI AR 2218, Vihtavuori N570, Hodgdon Retumbo rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 130gr | Berger AR Hybrid OTM Tactical 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.