Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 125gr | CutEdge LZR bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and Alliant Reloder-33.
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>> | 88% | 57,798 psi | 89% | 3087 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 56,304 psi | 87% | 3192 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 86% | 57,276 psi | 88% | 3199 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 84% | 55,448 psi | 85% | 3123 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 57,986 psi | 89% | 3202 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 56,927 psi | 88% | 3176 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,609 psi | 89% | 3297 fps | 98.1% |
| ADI AR 2225 | <<locked>> | 98% | 56,028 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 55,085 psi | 85% | 3110 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 58,262 psi | 90% | 3189 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,492 psi | 87% | 3097 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,840 psi | 87% | 3169 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 57,305 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 55,259 psi | 85% | 3196 fps | 97.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,766 psi | 84% | 3173 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 58,595 psi | 90% | 3159 fps | 98.2% |
| Bofors RP15 | <<locked>> | 90% | 57,682 psi | 89% | 3182 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,623 psi | 87% | 3179 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 58,262 psi | 90% | 3189 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 58,624 psi | 90% | 3202 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,797 psi | 87% | 3130 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,912 psi | 86% | 3114 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,637 psi | 86% | 3031 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,333 psi | 87% | 3261 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,666 psi | 58% | 2031 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,653 psi | 89% | 3100 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 58,305 psi | 90% | 3097 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 57,116 psi | 88% | 3107 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 88% | 56,521 psi | 87% | 3182 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,766 psi | 84% | 3163 fps | 99.6% |
| Lovex S071 | <<locked>> | 92% | 55,927 psi | 86% | 3058 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,970 psi | 86% | 3189 fps | 100% |
| Norma MRP | <<locked>> | 86% | 58,639 psi | 90% | 3209 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,885 psi | 89% | 3205 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 56,072 psi | 86% | 3127 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,551 psi | 59% | 2073 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 57,348 psi | 88% | 3245 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,521 psi | 87% | 3209 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 84% | 55,912 psi | 86% | 3094 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 86% | 58,552 psi | 90% | 3163 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 58,160 psi | 90% | 3159 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,479 psi | 88% | 3084 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 57,928 psi | 89% | 3091 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 55,143 psi | 85% | 3071 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,100 psi | 85% | 3054 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 58,175 psi | 90% | 3136 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 86% | 58,088 psi | 89% | 3123 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 58,015 psi | 89% | 3212 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 90% | 54,926 psi | 85% | 3133 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 94% | 56,739 psi | 87% | 3205 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 96% | 58,421 psi | 90% | 3278 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,797 psi | 87% | 3182 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,984 psi | 85% | 3068 fps | 99.8% |
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% | 43,961 psi | 68% | 2844 fps | 99.8% |
| Accurate High Country | <<locked>> | 80% | 48,733 psi | 75% | 3048 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 80% | 46,079 psi | 71% | 2982 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 80% | 48,370 psi | 74% | 2992 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 43,613 psi | 67% | 2923 fps | 97.3% |
| ADI AR 2217 | <<locked>> | 84% | 37,246 psi | 57% | 2772 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 96% | 49,501 psi | 76% | 3133 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 29,602 psi | 46% | 2589 fps | 95% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,283 psi | 74% | 2986 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,266 psi | 68% | 2927 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,917 psi | 66% | 2864 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,202 psi | 57% | 2789 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,139 psi | 76% | 3045 fps | 100% |
| Alliant Reloder-33 | 82.9 gr | 92% | 47,181 psi | 73% | 3038 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,647 psi | 78% | 3097 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 47,964 psi | 74% | 2963 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 41,220 psi | 63% | 2858 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 37,275 psi | 57% | 2779 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 44,266 psi | 68% | 2927 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 35,099 psi | 54% | 2717 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 46,093 psi | 71% | 2927 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,310 psi | 70% | 2910 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,098 psi | 80% | 2976 fps | 100% |
| Hodgdon Retumbo | 66.9 gr | 80% | 36,434 psi | 56% | 2831 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 43% | 1818 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,954 psi | 83% | 3041 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,679 psi | 84% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,992 psi | 72% | 2920 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 42,395 psi | 65% | 2904 fps | 97% |
| IMR 8133 Enduron | <<locked>> | 90% | 38,638 psi | 59% | 2828 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 37,753 psi | 58% | 2710 fps | 98.9% |
| Norma 217 | <<locked>> | 84% | 31,488 psi | 48% | 2651 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 47,239 psi | 73% | 3009 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 42,569 psi | 66% | 2917 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 80% | 38,276 psi | 59% | 2779 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,921 psi | 45% | 1860 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,766 psi | 55% | 2802 fps | 97.9% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 41,234 psi | 63% | 2897 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 49,182 psi | 76% | 2969 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 47,863 psi | 74% | 2972 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,514 psi | 73% | 2969 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 50,067 psi | 77% | 2953 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 54,012 psi | 83% | 3035 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,138 psi | 74% | 2946 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 42,105 psi | 65% | 2812 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 92% | 54,360 psi | 84% | 3068 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 47,558 psi | 73% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,891 psi | 72% | 3002 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 38,711 psi | 60% | 2792 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 86% | 42,424 psi | 65% | 2920 fps | 95.2% |
| Vihtavuori N570 | 79.8 gr | 92% | 50,343 psi | 77% | 3127 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,713 psi | 64% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,483 psi | 68% | 2871 fps | 98.6% |
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 53 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 125gr | CutEdge LZR. ADI AR 2218 delivers the highest muzzle velocity at 3,297 fps; across all powders the maximum-charge window runs from 2,031 fps to 3,297 fps. ADI AR 2218 gives the best case fill at 100 %, and 53 of the 53 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 125.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 125gr | CutEdge LZR 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.