Load Specifications
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 132gr | Peregrine Bushmaster (VRG-3) bullet and 51 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Alliant Reloder-33 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% | 57,957 psi | 89% | 3018 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 49,792 psi | 77% | 2972 fps | 96.1% |
| Accurate High Country | <<locked>> | 82% | 56,318 psi | 87% | 3120 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 84% | 57,421 psi | 88% | 3130 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 82% | 55,405 psi | 85% | 3051 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 58,175 psi | 90% | 3130 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 57,435 psi | 88% | 3110 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 58,146 psi | 89% | 3238 fps | 98.8% |
| ADI AR 2225 | <<locked>> | 96% | 56,898 psi | 88% | 3130 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 58,784 psi | 90% | 3100 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 58,552 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,681 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 57,595 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 57,479 psi | 88% | 3107 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,956 psi | 86% | 3136 fps | 98.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,782 psi | 86% | 3123 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 58,160 psi | 90% | 3087 fps | 98.7% |
| Bofors RP15 | <<locked>> | 88% | 57,725 psi | 89% | 3107 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 57,261 psi | 88% | 3120 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 58,552 psi | 90% | 3123 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 54,795 psi | 84% | 3068 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,623 psi | 87% | 3058 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,492 psi | 85% | 3038 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 90% | 57,232 psi | 88% | 3192 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,811 psi | 58% | 1988 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,782 psi | 87% | 3035 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 56,637 psi | 87% | 3110 fps | 99.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,767 psi | 86% | 3110 fps | 99.9% |
| Lovex S071 | <<locked>> | 90% | 56,159 psi | 86% | 2989 fps | 100% |
| Norma 217 | <<locked>> | 98% | 57,159 psi | 88% | 3130 fps | 100% |
| Norma MRP | <<locked>> | 84% | 58,798 psi | 90% | 3133 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 58,117 psi | 89% | 3140 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 56,420 psi | 87% | 3058 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,885 psi | 60% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 58,146 psi | 89% | 3176 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 57,029 psi | 88% | 3140 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 82% | 55,709 psi | 86% | 3018 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 84% | 58,523 psi | 90% | 3091 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,735 psi | 80% | 2989 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 58,131 psi | 89% | 3087 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,913 psi | 88% | 3012 fps | 99.6% |
| Somchem S385 | <<locked>> | 84% | 58,581 psi | 90% | 3054 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,216 psi | 85% | 2989 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 58,276 psi | 90% | 3074 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 84% | 58,276 psi | 90% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 58,088 psi | 89% | 3140 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 88% | 55,317 psi | 85% | 3071 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 92% | 57,406 psi | 88% | 3146 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 92% | 54,955 psi | 85% | 3143 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,870 psi | 89% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 58,639 psi | 90% | 3054 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% | 47,079 psi | 72% | 2838 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 46,079 psi | 71% | 2900 fps | 95% |
| Accurate High Country | <<locked>> | 80% | 52,402 psi | 81% | 3051 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 80% | 49,574 psi | 76% | 2986 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 51,735 psi | 80% | 2986 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 46,978 psi | 72% | 2927 fps | 98.6% |
| ADI AR 2217 | <<locked>> | 80% | 34,809 psi | 54% | 2644 fps | 95.3% |
| ADI AR 2218 | 83.6 gr | 92% | 46,311 psi | 71% | 2999 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 32,053 psi | 49% | 2605 fps | 97.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,329 psi | 79% | 2972 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,616 psi | 73% | 2927 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,383 psi | 71% | 2854 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,538 psi | 62% | 2795 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 53,374 psi | 82% | 3045 fps | 100% |
| Alliant Reloder-33 | 83.3 gr | 90% | 48,022 psi | 74% | 2989 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 94% | 47,819 psi | 74% | 2969 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,614 psi | 69% | 2831 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 44,222 psi | 68% | 2858 fps | 98.9% |
| Bofors RP30 | <<locked>> | 80% | 37,565 psi | 58% | 2720 fps | 96.4% |
| Bofors RP5 | <<locked>> | 80% | 47,616 psi | 73% | 2927 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 37,985 psi | 58% | 2730 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 80% | 49,240 psi | 76% | 2927 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,443 psi | 75% | 2910 fps | 98.5% |
| Hodgdon Retumbo | <<locked>> | 80% | 39,566 psi | 61% | 2844 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,442 psi | 44% | 1781 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,893 psi | 77% | 2913 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 80% | 45,643 psi | 70% | 2907 fps | 98.4% |
| IMR 8133 Enduron | <<locked>> | 86% | 36,738 psi | 57% | 2713 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 40,466 psi | 62% | 2707 fps | 99.7% |
| Norma 217 | <<locked>> | 82% | 32,213 psi | 50% | 2605 fps | 96.2% |
| Norma MRP | <<locked>> | 80% | 50,908 psi | 78% | 3005 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,311 psi | 71% | 2927 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 80% | 41,568 psi | 64% | 2789 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,153 psi | 45% | 1824 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 39,044 psi | 60% | 2818 fps | 99.3% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 38,798 psi | 60% | 2769 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 52,127 psi | 80% | 2959 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 51,082 psi | 79% | 2966 fps | 99.8% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 48,124 psi | 74% | 2920 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,749 psi | 78% | 2959 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 53,214 psi | 82% | 2946 fps | 99.2% |
| Somchem S385 | <<locked>> | 80% | 51,387 psi | 79% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 44,976 psi | 69% | 2808 fps | 99.4% |
| Vihtavuori N170 | <<locked>> | 88% | 50,705 psi | 78% | 2940 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 50,966 psi | 78% | 2936 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 50,357 psi | 78% | 3002 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 80% | 41,872 psi | 64% | 2802 fps | 97.1% |
| Vihtavuori N568 | <<locked>> | 82% | 39,900 psi | 61% | 2792 fps | 95% |
| Vihtavuori N570 | 78.3 gr | 88% | 47,340 psi | 73% | 2992 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,977 psi | 71% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,601 psi | 73% | 2867 fps | 99.5% |
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 51 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 132gr | Peregrine Bushmaster (VRG-3). ADI AR 2218 delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,238 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 132.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Alliant Reloder-33, Vihtavuori N570 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 132gr | Peregrine Bushmaster (VRG-3) 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.