Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 119gr | Lehigh Defense Match Solid bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ReloadSwiss RS 80.
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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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>> | 88% | 57,130 psi | 88% | 3136 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,085 psi | 85% | 3232 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 86% | 56,028 psi | 86% | 3238 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 86% | 58,117 psi | 89% | 3228 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 56,811 psi | 87% | 3238 fps | 99.3% |
| ADI AR 2217 | <<locked>> | 96% | 55,419 psi | 85% | 3209 fps | 99.5% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,144 psi | 86% | 3323 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 58,508 psi | 90% | 3297 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 58,334 psi | 90% | 3222 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 58,421 psi | 90% | 3219 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,696 psi | 89% | 3212 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,261 psi | 88% | 3235 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,274 psi | 85% | 3143 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,651 psi | 86% | 3215 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,970 psi | 86% | 3228 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,856 psi | 89% | 3304 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,334 psi | 88% | 3192 fps | 97.5% |
| Bofors RP15 | <<locked>> | 90% | 56,449 psi | 87% | 3222 fps | 99.8% |
| Bofors RP30 | <<locked>> | 94% | 55,579 psi | 86% | 3225 fps | 99.5% |
| Bofors RP5 | <<locked>> | 88% | 57,261 psi | 88% | 3235 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 94% | 57,058 psi | 88% | 3238 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 86% | 55,840 psi | 86% | 3169 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 88% | 58,639 psi | 90% | 3215 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 58,421 psi | 90% | 3133 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 58,755 psi | 90% | 3369 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,739 psi | 58% | 2073 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,753 psi | 87% | 3146 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,464 psi | 88% | 3146 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,028 psi | 86% | 3146 fps | 99% |
| IMR 7828 SSC | <<locked>> | 88% | 55,114 psi | 85% | 3219 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,461 psi | 82% | 3202 fps | 99.2% |
| Lovex S071 | <<locked>> | 94% | 58,755 psi | 90% | 3163 fps | 100% |
| Norma 204 | <<locked>> | 82% | 57,957 psi | 89% | 3202 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 54,781 psi | 84% | 3232 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,305 psi | 88% | 3251 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,318 psi | 87% | 3241 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 82% | 57,972 psi | 89% | 3199 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 54,969 psi | 85% | 3169 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,624 psi | 59% | 2119 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,622 psi | 86% | 3284 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 54,911 psi | 85% | 3235 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 86% | 58,610 psi | 90% | 3192 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 86% | 57,566 psi | 89% | 3209 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,174 psi | 88% | 3205 fps | 99.9% |
| Somchem S361 | <<locked>> | 84% | 56,449 psi | 87% | 3120 fps | 98.9% |
| Somchem S365 | <<locked>> | 82% | 56,956 psi | 88% | 3143 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,870 psi | 89% | 3173 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,798 psi | 89% | 3159 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 57,029 psi | 88% | 3173 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,695 psi | 87% | 3251 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 92% | 57,885 psi | 89% | 3241 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 94% | 55,622 psi | 86% | 3245 fps | 98.2% |
| Vihtavuori N570 | <<locked>> | 96% | 56,913 psi | 88% | 3310 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,448 psi | 85% | 3232 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,972 psi | 89% | 3173 fps | 99.9% |
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% | 43,598 psi | 67% | 2894 fps | 99.6% |
| Accurate High Country | <<locked>> | 80% | 47,921 psi | 74% | 3091 fps | 98% |
| Accurate MAGPRO | <<locked>> | 80% | 45,179 psi | 70% | 3018 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 47,529 psi | 73% | 3035 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 42,844 psi | 66% | 2959 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 39,262 psi | 60% | 2871 fps | 95.8% |
| ADI AR 2218 | <<locked>> | 98% | 51,982 psi | 80% | 3235 fps | 96% |
| ADI AR 2225 | <<locked>> | 82% | 31,372 psi | 48% | 2690 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,950 psi | 74% | 3035 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 54,520 psi | 84% | 3156 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,529 psi | 73% | 3025 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,613 psi | 67% | 2969 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,235 psi | 65% | 2910 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,593 psi | 56% | 2831 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,037 psi | 74% | 3087 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 49,690 psi | 76% | 3146 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,195 psi | 73% | 2999 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 40,625 psi | 63% | 2900 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 39,349 psi | 61% | 2887 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 43,613 psi | 67% | 2969 fps | 98% |
| Hodgdon H1000 | <<locked>> | 82% | 37,231 psi | 57% | 2822 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 80% | 45,368 psi | 70% | 2966 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,614 psi | 69% | 2949 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,285 psi | 79% | 3025 fps | 100% |
| Hodgdon Retumbo | 66.5 gr | 80% | 35,708 psi | 55% | 2861 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,282 psi | 44% | 1857 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,142 psi | 82% | 3081 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 53,722 psi | 83% | 3091 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,340 psi | 71% | 2959 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 80% | 41,611 psi | 64% | 2940 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 90% | 37,855 psi | 58% | 2864 fps | 95% |
| Lovex S071 | <<locked>> | 80% | 37,536 psi | 58% | 2756 fps | 98.5% |
| Norma 204 | <<locked>> | 80% | 54,186 psi | 83% | 3136 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 33,344 psi | 51% | 2759 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 46,427 psi | 71% | 3051 fps | 99.4% |
| Ramshot Grand | <<locked>> | 80% | 41,727 psi | 64% | 2953 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 80% | 54,244 psi | 83% | 3140 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 37,521 psi | 58% | 2815 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1900 fps | 100% |
| ReloadSwiss RS 76 | 71.2 gr | 80% | 35,114 psi | 54% | 2831 fps | 97.1% |
| ReloadSwiss RS 80 | 79 gr | 88% | 43,787 psi | 67% | 3012 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 48,240 psi | 74% | 3005 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 47,152 psi | 73% | 3015 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,804 psi | 72% | 3012 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 49,400 psi | 76% | 2992 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 53,127 psi | 82% | 3084 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,543 psi | 73% | 2992 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 80% | 41,568 psi | 64% | 2854 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 46,978 psi | 72% | 2999 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,064 psi | 71% | 3041 fps | 96.9% |
| Vihtavuori N565 | <<locked>> | 82% | 41,089 psi | 63% | 2904 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 44,788 psi | 69% | 3025 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 94% | 52,721 psi | 81% | 3228 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,567 psi | 62% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,845 psi | 67% | 2910 fps | 98% |
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 55 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 119gr | Lehigh Defense Match Solid. Hodgdon Retumbo delivers the highest muzzle velocity at 3,369 fps; across all powders the maximum-charge window runs from 2,073 fps to 3,369 fps. ADI AR 2218 gives the best case fill at 100 %, and 55 of the 55 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 119.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Hodgdon TrailBoss 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, ReloadSwiss RS 76, ReloadSwiss RS 80 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 119gr | Lehigh Defense Match Solid 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.