Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 124gr | Peregrine Plainsmaster (VLR-4) 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 57,899 psi | 89% | 3097 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 56,115 psi | 86% | 3199 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 86% | 57,334 psi | 88% | 3212 fps | 99% |
| ADI AR 2209 | <<locked>> | 84% | 55,550 psi | 85% | 3136 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 88% | 58,044 psi | 89% | 3212 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 56,942 psi | 88% | 3186 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,754 psi | 89% | 3307 fps | 98.1% |
| ADI AR 2225 | <<locked>> | 98% | 55,999 psi | 86% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,755 psi | 90% | 3182 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 58,320 psi | 90% | 3202 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,362 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,913 psi | 88% | 3179 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 57,130 psi | 88% | 3192 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 55,201 psi | 85% | 3205 fps | 97.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,679 psi | 84% | 3182 fps | 96.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 58,581 psi | 90% | 3169 fps | 98.2% |
| Bofors RP15 | <<locked>> | 90% | 57,725 psi | 89% | 3192 fps | 99.9% |
| Bofors RP30 | <<locked>> | 94% | 56,637 psi | 87% | 3192 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 58,320 psi | 90% | 3202 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 58,653 psi | 90% | 3212 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,884 psi | 88% | 3140 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,767 psi | 86% | 3120 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,767 psi | 86% | 3045 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 56,333 psi | 87% | 3271 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,608 psi | 58% | 2037 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,537 psi | 89% | 3107 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 58,218 psi | 90% | 3107 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 57,000 psi | 88% | 3114 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 88% | 56,333 psi | 87% | 3189 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,766 psi | 84% | 3176 fps | 99.6% |
| Lovex S071 | <<locked>> | 92% | 56,028 psi | 86% | 3071 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,941 psi | 86% | 3196 fps | 100% |
| Norma MRP | <<locked>> | 86% | 58,682 psi | 90% | 3219 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,943 psi | 89% | 3219 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 90% | 56,101 psi | 86% | 3136 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,667 psi | 60% | 2087 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 57,319 psi | 88% | 3258 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 56,478 psi | 87% | 3215 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 84% | 55,999 psi | 86% | 3104 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 86% | 58,668 psi | 90% | 3176 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 58,276 psi | 90% | 3173 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,319 psi | 88% | 3094 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 57,812 psi | 89% | 3100 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,784 psi | 90% | 3140 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 55,172 psi | 85% | 3068 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 58,160 psi | 90% | 3143 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 86% | 57,957 psi | 89% | 3133 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 58,073 psi | 89% | 3225 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 90% | 54,940 psi | 85% | 3143 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 94% | 56,724 psi | 87% | 3215 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 96% | 58,378 psi | 90% | 3284 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,884 psi | 88% | 3192 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 55,042 psi | 85% | 3077 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% | 43,903 psi | 68% | 2854 fps | 99.8% |
| Accurate High Country | <<locked>> | 80% | 48,631 psi | 75% | 3058 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 80% | 45,977 psi | 71% | 2989 fps | 96.7% |
| ADI AR 2209 | <<locked>> | 80% | 48,486 psi | 75% | 3002 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 80% | 43,526 psi | 67% | 2933 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 37,144 psi | 57% | 2776 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 96% | 49,487 psi | 76% | 3140 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 82% | 31,734 psi | 49% | 2664 fps | 96.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,196 psi | 74% | 2992 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,179 psi | 68% | 2933 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,047 psi | 66% | 2877 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,289 psi | 57% | 2802 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 49,008 psi | 75% | 3054 fps | 100% |
| Alliant Reloder-33 | 83.4 gr | 92% | 47,355 psi | 73% | 3051 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,589 psi | 78% | 3104 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 48,008 psi | 74% | 2972 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 41,133 psi | 63% | 2864 fps | 97.6% |
| Bofors RP30 | <<locked>> | 82% | 37,217 psi | 57% | 2785 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 44,179 psi | 68% | 2933 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 80% | 35,186 psi | 54% | 2726 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 46,195 psi | 71% | 2940 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,223 psi | 70% | 2917 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,025 psi | 80% | 2986 fps | 100% |
| Hodgdon Retumbo | 67.2 gr | 80% | 36,347 psi | 56% | 2838 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 43% | 1824 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 54,085 psi | 83% | 3051 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,621 psi | 84% | 3054 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,094 psi | 72% | 2930 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 42,337 psi | 65% | 2913 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 38,522 psi | 59% | 2835 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 37,695 psi | 58% | 2717 fps | 98.8% |
| Norma 217 | <<locked>> | 86% | 33,750 psi | 52% | 2723 fps | 96.2% |
| Norma MRP | <<locked>> | 80% | 47,137 psi | 73% | 3015 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 42,496 psi | 65% | 2923 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 80% | 38,159 psi | 59% | 2785 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,906 psi | 44% | 1867 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,665 psi | 55% | 2805 fps | 97.8% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 41,234 psi | 63% | 2904 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 49,095 psi | 76% | 2979 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 80% | 47,805 psi | 74% | 2982 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,471 psi | 73% | 2976 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 50,140 psi | 77% | 2966 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 54,157 psi | 83% | 3045 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,051 psi | 74% | 2953 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 42,047 psi | 65% | 2818 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 92% | 54,375 psi | 84% | 3077 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 47,485 psi | 73% | 2956 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,789 psi | 72% | 3009 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 80% | 38,638 psi | 59% | 2799 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 86% | 42,279 psi | 65% | 2923 fps | 95% |
| Vihtavuori N570 | 80.2 gr | 92% | 50,328 psi | 77% | 3133 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,626 psi | 64% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,367 psi | 68% | 2877 fps | 98.5% |
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 | 124gr | Peregrine Plainsmaster (VLR-4). ADI AR 2218 delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 2,037 fps to 3,307 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 124.0 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 | 124gr | Peregrine Plainsmaster (VLR-4) 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.