Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 130gr | Nosler AccuBond 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% | 58,030 psi | 89% | 3035 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 56,101 psi | 86% | 3133 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 84% | 57,029 psi | 88% | 3140 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 82% | 55,027 psi | 85% | 3061 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 57,798 psi | 89% | 3143 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 94% | 56,869 psi | 88% | 3120 fps | 99.9% |
| ADI AR 2218 | <<locked>> | 98% | 57,566 psi | 89% | 3245 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 96% | 56,420 psi | 87% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 58,421 psi | 90% | 3110 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 58,291 psi | 90% | 3136 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,434 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,058 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,290 psi | 88% | 3127 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,535 psi | 85% | 3150 fps | 97.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,651 psi | 86% | 3140 fps | 97.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,870 psi | 89% | 3097 fps | 98.4% |
| Bofors RP15 | <<locked>> | 88% | 57,464 psi | 88% | 3120 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,927 psi | 88% | 3130 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 58,291 psi | 90% | 3136 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 58,552 psi | 90% | 3146 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,304 psi | 87% | 3068 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,419 psi | 85% | 3051 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,594 psi | 87% | 3205 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,014 psi | 59% | 2001 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,478 psi | 87% | 3045 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 86% | 56,289 psi | 87% | 3123 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,477 psi | 85% | 3120 fps | 99.8% |
| Lovex S071 | <<locked>> | 90% | 56,217 psi | 87% | 3009 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,869 psi | 88% | 3146 fps | 100% |
| Norma MRP | <<locked>> | 84% | 58,537 psi | 90% | 3150 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,740 psi | 89% | 3150 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 88% | 56,275 psi | 87% | 3071 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,957 psi | 60% | 2047 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,653 psi | 89% | 3192 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,840 psi | 87% | 3159 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 55,347 psi | 85% | 3028 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 84% | 58,189 psi | 90% | 3100 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,503 psi | 79% | 2999 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,798 psi | 89% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,753 psi | 87% | 3022 fps | 99.5% |
| Somchem S385 | <<locked>> | 84% | 58,653 psi | 90% | 3071 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 58,755 psi | 90% | 3061 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 58,102 psi | 89% | 3084 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 58,146 psi | 89% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,827 psi | 89% | 3153 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 88% | 55,317 psi | 85% | 3084 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 92% | 57,116 psi | 88% | 3156 fps | 99.1% |
| Vihtavuori N570 | <<locked>> | 94% | 58,537 psi | 90% | 3225 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,334 psi | 88% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 58,436 psi | 90% | 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% | 47,384 psi | 73% | 2861 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 52,243 psi | 80% | 3064 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 80% | 49,661 psi | 76% | 3005 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 80% | 51,590 psi | 79% | 2999 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 46,876 psi | 72% | 2940 fps | 98.5% |
| ADI AR 2217 | <<locked>> | 80% | 34,954 psi | 54% | 2661 fps | 95.1% |
| ADI AR 2218 | 82.5 gr | 92% | 46,180 psi | 71% | 3009 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 32,285 psi | 50% | 2628 fps | 97.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,256 psi | 79% | 2989 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,659 psi | 73% | 2946 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,383 psi | 71% | 2874 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,567 psi | 62% | 2815 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 53,214 psi | 82% | 3058 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 47,906 psi | 74% | 3002 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,790 psi | 74% | 2986 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,570 psi | 69% | 2841 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 44,280 psi | 68% | 2874 fps | 98.8% |
| Bofors RP30 | <<locked>> | 80% | 37,797 psi | 58% | 2743 fps | 96.4% |
| Bofors RP5 | <<locked>> | 80% | 47,659 psi | 73% | 2946 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 80% | 38,087 psi | 59% | 2746 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 80% | 49,182 psi | 76% | 2940 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,414 psi | 75% | 2923 fps | 98.3% |
| Hodgdon Retumbo | 67.7 gr | 80% | 39,595 psi | 61% | 2864 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,529 psi | 44% | 1791 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,821 psi | 77% | 2923 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 80% | 45,571 psi | 70% | 2923 fps | 98.3% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,825 psi | 57% | 2733 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 40,988 psi | 63% | 2730 fps | 99.7% |
| Norma 217 | <<locked>> | 80% | 30,168 psi | 46% | 2562 fps | 95% |
| Norma MRP | <<locked>> | 80% | 50,691 psi | 78% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,267 psi | 71% | 2943 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 80% | 41,727 psi | 64% | 2805 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,269 psi | 45% | 1831 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,044 psi | 60% | 2835 fps | 99.3% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 38,957 psi | 60% | 2792 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 51,996 psi | 80% | 2969 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 80% | 51,039 psi | 79% | 2982 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 48,080 psi | 74% | 2930 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,691 psi | 78% | 2976 fps | 99.7% |
| Somchem S361 | <<locked>> | 80% | 53,084 psi | 82% | 2956 fps | 99.1% |
| Somchem S385 | <<locked>> | 80% | 51,503 psi | 79% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,049 psi | 69% | 2825 fps | 99.4% |
| Vihtavuori N170 | <<locked>> | 88% | 50,807 psi | 78% | 2956 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 80% | 51,082 psi | 79% | 2956 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,154 psi | 77% | 3015 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 80% | 41,974 psi | 65% | 2822 fps | 97% |
| Vihtavuori N568 | <<locked>> | 84% | 42,830 psi | 66% | 2877 fps | 95.9% |
| Vihtavuori N570 | 77.3 gr | 88% | 47,297 psi | 73% | 3009 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,788 psi | 70% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,659 psi | 73% | 2884 fps | 99.4% |
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 | Nosler AccuBond. ADI AR 2218 delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,245 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 59–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan SP 13 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 | Nosler AccuBond 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.