Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 130gr | Barnes Solid BT bullet and 50 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>> | 86% | 57,566 psi | 89% | 3028 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 55,811 psi | 86% | 3127 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 84% | 56,782 psi | 87% | 3136 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 84% | 58,581 psi | 90% | 3120 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 57,290 psi | 88% | 3133 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 56,652 psi | 87% | 3117 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 57,145 psi | 88% | 3238 fps | 98.4% |
| ADI AR 2225 | <<locked>> | 96% | 55,941 psi | 86% | 3136 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,943 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,783 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,130 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 56,826 psi | 87% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 56,768 psi | 87% | 3117 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,100 psi | 85% | 3143 fps | 97.7% |
| Alliant Reloder-50 | <<locked>> | 98% | 54,984 psi | 85% | 3130 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,493 psi | 88% | 3091 fps | 98.4% |
| Bofors RP15 | <<locked>> | 88% | 57,217 psi | 88% | 3117 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,492 psi | 87% | 3123 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 57,783 psi | 89% | 3127 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 58,073 psi | 89% | 3136 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,057 psi | 86% | 3061 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,984 psi | 85% | 3045 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 58,624 psi | 90% | 3018 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,275 psi | 87% | 3199 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,956 psi | 58% | 1998 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,231 psi | 87% | 3038 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 55,767 psi | 86% | 3114 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 58,784 psi | 90% | 3176 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 55,970 psi | 86% | 3005 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,362 psi | 87% | 3136 fps | 100% |
| Norma MRP | <<locked>> | 84% | 58,044 psi | 89% | 3143 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,232 psi | 88% | 3140 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 55,796 psi | 86% | 3064 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,899 psi | 60% | 2044 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,116 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,362 psi | 87% | 3150 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 82% | 55,085 psi | 85% | 3025 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 84% | 57,899 psi | 89% | 3097 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,522 psi | 89% | 3094 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,347 psi | 87% | 3015 fps | 99.4% |
| Somchem S385 | <<locked>> | 84% | 58,175 psi | 90% | 3064 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 58,320 psi | 90% | 3054 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 57,725 psi | 89% | 3081 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 57,827 psi | 89% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,334 psi | 88% | 3146 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 90% | 58,624 psi | 90% | 3143 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 92% | 56,652 psi | 87% | 3153 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 94% | 58,088 psi | 89% | 3219 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,000 psi | 88% | 3127 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 58,189 psi | 90% | 3064 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% | 47,108 psi | 73% | 2854 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 51,953 psi | 80% | 3058 fps | 99.3% |
| Accurate MAGPRO | <<locked>> | 80% | 49,197 psi | 76% | 2995 fps | 98% |
| ADI AR 2209 | <<locked>> | 80% | 51,097 psi | 79% | 2992 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 46,412 psi | 71% | 2933 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 80% | 34,708 psi | 53% | 2657 fps | 95% |
| ADI AR 2218 | 82 gr | 92% | 45,818 psi | 71% | 2999 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 80% | 32,068 psi | 49% | 2625 fps | 97.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,966 psi | 78% | 2982 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,181 psi | 73% | 2936 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,905 psi | 71% | 2864 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,089 psi | 62% | 2805 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,692 psi | 81% | 3051 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 47,268 psi | 73% | 2989 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,369 psi | 73% | 2979 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,193 psi | 68% | 2835 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 44,019 psi | 68% | 2871 fps | 98.7% |
| Bofors RP30 | <<locked>> | 80% | 37,507 psi | 58% | 2736 fps | 96.2% |
| Bofors RP5 | <<locked>> | 80% | 47,181 psi | 73% | 2936 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 80% | 37,826 psi | 58% | 2740 fps | 97% |
| Hodgdon H4831 | <<locked>> | 80% | 48,936 psi | 75% | 2933 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,964 psi | 74% | 2913 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 55,013 psi | 85% | 2963 fps | 100% |
| Hodgdon Retumbo | 67.3 gr | 80% | 39,305 psi | 60% | 2861 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,427 psi | 44% | 1788 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,385 psi | 76% | 2917 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 45,266 psi | 70% | 2917 fps | 98.2% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,564 psi | 56% | 2726 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 40,712 psi | 63% | 2726 fps | 99.6% |
| Norma 217 | <<locked>> | 82% | 32,082 psi | 49% | 2621 fps | 96% |
| Norma MRP | <<locked>> | 80% | 50,401 psi | 78% | 3015 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,774 psi | 70% | 2933 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 80% | 41,292 psi | 64% | 2799 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,312 psi | 45% | 1831 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,783 psi | 60% | 2831 fps | 99.2% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 41,582 psi | 64% | 2854 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 51,735 psi | 80% | 2966 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 50,763 psi | 78% | 2976 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,415 psi | 78% | 2972 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 52,852 psi | 81% | 2956 fps | 99% |
| Somchem S385 | <<locked>> | 80% | 51,024 psi | 79% | 2943 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 44,817 psi | 69% | 2818 fps | 99.3% |
| Vihtavuori N170 | <<locked>> | 88% | 50,415 psi | 78% | 2946 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 50,778 psi | 78% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,864 psi | 77% | 3009 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 80% | 41,698 psi | 64% | 2818 fps | 96.9% |
| Vihtavuori N568 | <<locked>> | 84% | 42,583 psi | 66% | 2874 fps | 95.8% |
| Vihtavuori N570 | 76.8 gr | 88% | 46,862 psi | 72% | 2999 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,440 psi | 70% | 2936 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,210 psi | 73% | 2874 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 50 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 130gr | Barnes Solid BT. ADI AR 2218 delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,238 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 50 of the 50 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 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 8133 Enduron, 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 | Barnes Solid BT 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.