Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 130gr | Target Virtus bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Hodgdon Retumbo and ReloadSwiss RS 76.
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% | 55,448 psi | 85% | 3002 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 54,665 psi | 84% | 3104 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 84% | 56,927 psi | 88% | 3094 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 55,579 psi | 86% | 3110 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 96% | 58,595 psi | 90% | 3153 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 54,969 psi | 85% | 3202 fps | 97.9% |
| ADI AR 2225 | <<locked>> | 98% | 57,870 psi | 89% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,289 psi | 87% | 3081 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,999 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 57,914 psi | 89% | 3064 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 58,465 psi | 90% | 3140 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 58,711 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 56,913 psi | 88% | 3179 fps | 98% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 56,536 psi | 87% | 3163 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,985 psi | 86% | 3068 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 55,405 psi | 85% | 3091 fps | 99.9% |
| Bofors RP30 | <<locked>> | 94% | 58,233 psi | 90% | 3156 fps | 99.9% |
| Bofors RP5 | <<locked>> | 86% | 55,999 psi | 86% | 3100 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,043 psi | 86% | 3110 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 58,117 psi | 89% | 3100 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,203 psi | 88% | 3084 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,043 psi | 88% | 2999 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 58,204 psi | 90% | 3238 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,782 psi | 58% | 1995 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 58,769 psi | 90% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 58,291 psi | 90% | 3077 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 88% | 58,030 psi | 89% | 3156 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,536 psi | 87% | 3146 fps | 99.9% |
| Lovex S071 | <<locked>> | 92% | 57,290 psi | 88% | 3028 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 3166 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,115 psi | 86% | 3117 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,332 psi | 85% | 3114 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 57,754 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,682 psi | 60% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,824 psi | 84% | 3153 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 58,189 psi | 90% | 3186 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 84% | 57,043 psi | 88% | 3061 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 84% | 56,115 psi | 86% | 3071 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,782 psi | 86% | 3071 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 58,711 psi | 90% | 3054 fps | 99.6% |
| Somchem S385 | <<locked>> | 84% | 56,376 psi | 87% | 3038 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,391 psi | 87% | 3028 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,796 psi | 86% | 3048 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 55,767 psi | 86% | 3038 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,550 psi | 85% | 3117 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 90% | 56,449 psi | 87% | 3110 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 94% | 58,494 psi | 90% | 3186 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 94% | 55,869 psi | 86% | 3179 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 58,682 psi | 90% | 3153 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,289 psi | 87% | 3038 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% | 45,063 psi | 69% | 2822 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 47,355 psi | 73% | 2963 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 80% | 49,676 psi | 76% | 2969 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 44,730 psi | 69% | 2900 fps | 97.9% |
| ADI AR 2217 | <<locked>> | 82% | 35,534 psi | 55% | 2684 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 94% | 47,282 psi | 73% | 3038 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 30,458 psi | 47% | 2575 fps | 96.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,356 psi | 76% | 2956 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,382 psi | 70% | 2904 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,208 psi | 68% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,450 psi | 59% | 2776 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,604 psi | 78% | 3018 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 48,805 psi | 75% | 3025 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 96% | 48,414 psi | 75% | 3005 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,977 psi | 71% | 2877 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 42,279 psi | 65% | 2835 fps | 98.3% |
| Bofors RP30 | <<locked>> | 80% | 35,665 psi | 55% | 2694 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 45,382 psi | 70% | 2904 fps | 99% |
| Hodgdon H1000 | <<locked>> | 80% | 36,216 psi | 56% | 2703 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 80% | 47,355 psi | 73% | 2907 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,369 psi | 71% | 2884 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,432 psi | 82% | 2943 fps | 100% |
| Hodgdon Retumbo | 66.6 gr | 80% | 37,507 psi | 58% | 2818 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,311 psi | 44% | 1785 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 55,216 psi | 85% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,124 psi | 74% | 2894 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 80% | 43,569 psi | 67% | 2884 fps | 97.7% |
| IMR 8133 Enduron | <<locked>> | 88% | 37,217 psi | 57% | 2749 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 38,696 psi | 60% | 2687 fps | 99.3% |
| Norma 217 | <<locked>> | 84% | 32,590 psi | 50% | 2641 fps | 96.2% |
| Norma MRP | <<locked>> | 80% | 48,544 psi | 75% | 2982 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 43,888 psi | 68% | 2900 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 80% | 39,450 psi | 61% | 2762 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,008 psi | 45% | 1824 fps | 100% |
| ReloadSwiss RS 76 | 71.3 gr | 80% | 36,927 psi | 57% | 2789 fps | 98.7% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 39,421 psi | 61% | 2808 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 50,198 psi | 77% | 2940 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 48,994 psi | 75% | 2946 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,646 psi | 75% | 2943 fps | 99.5% |
| Somchem S361 | <<locked>> | 80% | 51,126 psi | 79% | 2927 fps | 98.7% |
| Somchem S385 | <<locked>> | 80% | 49,226 psi | 76% | 2917 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 43,120 psi | 66% | 2789 fps | 99% |
| Vihtavuori N170 | <<locked>> | 90% | 51,924 psi | 80% | 2979 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 48,718 psi | 75% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,095 psi | 74% | 2979 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 80% | 39,784 psi | 61% | 2776 fps | 96.2% |
| Vihtavuori N568 | <<locked>> | 86% | 43,772 psi | 67% | 2904 fps | 96.1% |
| Vihtavuori N570 | 77.7 gr | 90% | 48,153 psi | 74% | 3031 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,221 psi | 67% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,527 psi | 70% | 2848 fps | 99% |
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 | Target Virtus. Hodgdon Retumbo delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,238 fps. Alliant Reloder-50 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 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-50, Hodgdon TrailBoss, IMR 8133 Enduron 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. Vihtavuori N570, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 130gr | Target Virtus 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.