Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 130gr | Brenneke TAG bullet and 51 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 57,246 psi | 88% | 3025 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 55,564 psi | 86% | 3127 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 84% | 56,666 psi | 87% | 3136 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 84% | 58,581 psi | 90% | 3120 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 57,421 psi | 88% | 3140 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 56,840 psi | 87% | 3120 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 57,493 psi | 88% | 3245 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 96% | 56,260 psi | 87% | 3140 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 58,697 psi | 90% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 58,088 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,783 psi | 89% | 3130 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,970 psi | 86% | 3031 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 56,811 psi | 87% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 56,898 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,288 psi | 85% | 3143 fps | 97.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,042 psi | 85% | 3127 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,711 psi | 89% | 3097 fps | 98.5% |
| Bofors RP15 | <<locked>> | 88% | 57,203 psi | 88% | 3117 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,463 psi | 87% | 3127 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 57,783 psi | 89% | 3130 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 58,276 psi | 90% | 3140 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,173 psi | 86% | 3068 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,071 psi | 85% | 3048 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 58,639 psi | 90% | 3018 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,594 psi | 87% | 3205 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 58% | 2005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,173 psi | 86% | 3041 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 55,883 psi | 86% | 3120 fps | 99.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 54,940 psi | 85% | 3114 fps | 99.8% |
| Lovex S071 | <<locked>> | 90% | 55,680 psi | 86% | 3002 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,492 psi | 87% | 3140 fps | 100% |
| Norma MRP | <<locked>> | 84% | 58,001 psi | 89% | 3143 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,522 psi | 89% | 3146 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 55,825 psi | 86% | 3068 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,812 psi | 60% | 2051 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,421 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,347 psi | 87% | 3146 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 55,085 psi | 85% | 3028 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 84% | 58,030 psi | 89% | 3100 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,653 psi | 89% | 3100 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,507 psi | 87% | 3022 fps | 99.5% |
| Somchem S385 | <<locked>> | 84% | 58,131 psi | 89% | 3064 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 58,276 psi | 90% | 3054 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 57,754 psi | 89% | 3081 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 57,551 psi | 89% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,348 psi | 88% | 3150 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 90% | 58,552 psi | 90% | 3140 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 92% | 56,797 psi | 87% | 3156 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 94% | 58,247 psi | 90% | 3219 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 86% | 56,942 psi | 88% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 58,146 psi | 89% | 3068 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% | 46,659 psi | 72% | 2848 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 51,924 psi | 80% | 3058 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 80% | 49,110 psi | 76% | 2995 fps | 98% |
| ADI AR 2209 | <<locked>> | 80% | 51,126 psi | 79% | 2992 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 46,340 psi | 71% | 2930 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 82% | 36,883 psi | 57% | 2717 fps | 96% |
| ADI AR 2218 | 83.7 gr | 92% | 45,803 psi | 70% | 3002 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 31,691 psi | 49% | 2612 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,416 psi | 79% | 2992 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,937 psi | 78% | 2986 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,007 psi | 72% | 2933 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,759 psi | 70% | 2861 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,929 psi | 61% | 2802 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,620 psi | 81% | 3048 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 47,239 psi | 73% | 2986 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,195 psi | 73% | 2972 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,251 psi | 68% | 2841 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 43,845 psi | 67% | 2867 fps | 98.7% |
| Bofors RP30 | <<locked>> | 80% | 37,188 psi | 57% | 2726 fps | 96.1% |
| Bofors RP5 | <<locked>> | 80% | 47,007 psi | 72% | 2933 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 37,608 psi | 58% | 2736 fps | 97% |
| Hodgdon H4831 | <<locked>> | 80% | 48,849 psi | 75% | 2936 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,877 psi | 74% | 2917 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 55,013 psi | 85% | 2966 fps | 100% |
| Hodgdon Retumbo | 68.7 gr | 80% | 39,117 psi | 60% | 2851 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,384 psi | 44% | 1795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,371 psi | 76% | 2917 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 80% | 45,208 psi | 70% | 2917 fps | 98.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,143 psi | 56% | 2713 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 40,103 psi | 62% | 2713 fps | 99.5% |
| Norma 217 | <<locked>> | 82% | 31,662 psi | 49% | 2602 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 50,415 psi | 78% | 3015 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,832 psi | 71% | 2936 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 80% | 41,133 psi | 63% | 2795 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,240 psi | 45% | 1837 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,580 psi | 59% | 2822 fps | 99.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 41,379 psi | 64% | 2848 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 51,561 psi | 79% | 2966 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 50,662 psi | 78% | 2976 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,314 psi | 77% | 2969 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 52,823 psi | 81% | 2959 fps | 99.1% |
| Somchem S385 | <<locked>> | 80% | 50,792 psi | 78% | 2946 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 44,614 psi | 69% | 2815 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 88% | 50,256 psi | 77% | 2946 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 50,502 psi | 78% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,908 psi | 77% | 3012 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 80% | 41,452 psi | 64% | 2808 fps | 96.8% |
| Vihtavuori N568 | <<locked>> | 84% | 42,337 psi | 65% | 2864 fps | 95.7% |
| Vihtavuori N570 | 78.4 gr | 88% | 46,804 psi | 72% | 2995 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,194 psi | 70% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,195 psi | 73% | 2877 fps | 99.3% |
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 | Brenneke TAG. ADI AR 2218 delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,245 fps. Hodgdon TrailBoss 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 1:10.0 twist; slower twists will usually not stabilise this weight. 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 | 130gr | Brenneke TAG 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.