Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:140 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5-300 Weatherby Mag. load data
Case Length (l3):2.825"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:99.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:64,977 psi
Recommended Twist Rate:1:8.5
Load data in caliber 6.5-300 Weatherby Mag. with .264 | 140gr | Berger LRBT Target bullet and 150 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 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.
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>> | 84% | 56,913 psi | 88% | 2923 fps | 100% |
| Accurate 3100 | <<locked>> | 84% | 56,913 psi | 88% | 2923 fps | 100% |
| Accurate 3100 | <<locked>> | 84% | 57,450 psi | 88% | 2933 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,895 psi | 81% | 2966 fps | 97.5% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,707 psi | 81% | 2963 fps | 97.5% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,679 psi | 83% | 2976 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 82% | 56,159 psi | 86% | 3035 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 82% | 55,970 psi | 86% | 3028 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 82% | 56,724 psi | 87% | 3045 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 57,754 psi | 89% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 57,522 psi | 89% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 58,320 psi | 90% | 3018 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,710 psi | 87% | 3031 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 84% | 56,463 psi | 87% | 3025 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 84% | 57,246 psi | 88% | 3038 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 56,304 psi | 87% | 3018 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 56,101 psi | 86% | 3015 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,058 psi | 88% | 3028 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,855 psi | 88% | 3143 fps | 99% |
| ADI AR 2218 | <<locked>> | 96% | 56,637 psi | 87% | 3140 fps | 99% |
| ADI AR 2218 | <<locked>> | 96% | 57,740 psi | 89% | 3159 fps | 99.2% |
| ADI AR 2225 | <<locked>> | 94% | 56,028 psi | 86% | 3038 fps | 100% |
| ADI AR 2225 | <<locked>> | 94% | 56,043 psi | 86% | 3038 fps | 100% |
| ADI AR 2225 | <<locked>> | 94% | 56,797 psi | 87% | 3048 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,957 psi | 89% | 3005 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,754 psi | 89% | 3005 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 58,291 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,406 psi | 88% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,188 psi | 88% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,711 psi | 89% | 3005 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,246 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,043 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,798 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,651 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,419 psi | 85% | 2923 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,246 psi | 87% | 2936 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,536 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,318 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,116 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,984 psi | 85% | 3051 fps | 98.4% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,795 psi | 84% | 3048 fps | 98.3% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,680 psi | 86% | 3061 fps | 98.5% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,332 psi | 85% | 3048 fps | 98% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,114 psi | 85% | 3045 fps | 97.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,941 psi | 86% | 3054 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,637 psi | 87% | 2989 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,637 psi | 87% | 2989 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,217 psi | 88% | 2999 fps | 98.9% |
| Bofors RP15 | <<locked>> | 86% | 56,695 psi | 87% | 3015 fps | 100% |
| Bofors RP15 | <<locked>> | 86% | 56,710 psi | 87% | 3015 fps | 100% |
| Bofors RP15 | <<locked>> | 86% | 57,246 psi | 88% | 3022 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,449 psi | 87% | 3031 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,231 psi | 87% | 3028 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,985 psi | 88% | 3038 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,246 psi | 88% | 3025 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,043 psi | 88% | 3018 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,798 psi | 89% | 3031 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,696 psi | 89% | 3035 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,450 psi | 88% | 3031 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 58,494 psi | 90% | 3048 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,085 psi | 85% | 2956 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 55,071 psi | 85% | 2956 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 55,840 psi | 86% | 2966 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,972 psi | 89% | 3002 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,754 psi | 89% | 2999 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 58,508 psi | 90% | 3012 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,333 psi | 87% | 3100 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,101 psi | 86% | 3097 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,000 psi | 88% | 3110 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,174 psi | 59% | 1936 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,101 psi | 59% | 1936 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,043 psi | 59% | 1939 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 58,755 psi | 90% | 2989 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 58,784 psi | 90% | 2992 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,811 psi | 86% | 2943 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 84% | 55,274 psi | 85% | 3012 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 55,303 psi | 85% | 3012 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 56,086 psi | 86% | 3025 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,493 psi | 88% | 2946 fps | 96.2% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,508 psi | 89% | 2946 fps | 96.1% |
| IMR 7977 Enduron | <<locked>> | 90% | 58,102 psi | 89% | 2956 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,998 psi | 85% | 3022 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 98% | 58,726 psi | 90% | 3081 fps | 100% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,724 psi | 86% | 3031 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,564 psi | 86% | 2904 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,347 psi | 85% | 2900 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 56,130 psi | 86% | 2913 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,739 psi | 87% | 3048 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,478 psi | 87% | 3045 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,508 psi | 89% | 3058 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,377 psi | 88% | 3035 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,406 psi | 88% | 3035 fps | 100% |
| Norma MRP | <<locked>> | 82% | 58,175 psi | 90% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,913 psi | 88% | 3041 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,681 psi | 87% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,537 psi | 89% | 3048 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,245 psi | 85% | 2966 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,042 psi | 85% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,999 psi | 86% | 2972 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,146 psi | 60% | 1982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,088 psi | 60% | 1978 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,204 psi | 60% | 1985 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 57,072 psi | 88% | 3084 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,797 psi | 87% | 3081 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 57,885 psi | 89% | 3094 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,188 psi | 86% | 3054 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,985 psi | 86% | 3051 fps | 99.7% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,884 psi | 88% | 3068 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 57,899 psi | 89% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 57,653 psi | 89% | 2972 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 58,407 psi | 90% | 2986 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,174 psi | 88% | 2989 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,159 psi | 88% | 2992 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,769 psi | 89% | 3002 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,679 psi | 84% | 2972 fps | 97.5% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,520 psi | 84% | 2969 fps | 97.5% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,259 psi | 85% | 2982 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,811 psi | 87% | 2989 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,782 psi | 87% | 2986 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,406 psi | 88% | 2995 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,421 psi | 88% | 2959 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,217 psi | 88% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,972 psi | 89% | 2966 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,609 psi | 89% | 2949 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,377 psi | 88% | 2946 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 58,102 psi | 89% | 2956 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,985 psi | 88% | 2982 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 90% | 57,014 psi | 88% | 2982 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 90% | 57,609 psi | 89% | 2992 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 57,261 psi | 88% | 2956 fps | 100% |
| Vihtavuori N555 | <<locked>> | 82% | 57,276 psi | 88% | 2956 fps | 100% |
| Vihtavuori N555 | <<locked>> | 82% | 57,885 psi | 89% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,652 psi | 87% | 3041 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 56,637 psi | 87% | 3041 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 57,421 psi | 88% | 3054 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 58,276 psi | 90% | 3045 fps | 100% |
| Vihtavuori N565 | <<locked>> | 88% | 58,073 psi | 89% | 3041 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 55,085 psi | 85% | 2989 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 90% | 56,347 psi | 87% | 3054 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 90% | 56,362 psi | 87% | 3058 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 90% | 57,290 psi | 88% | 3071 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 58,073 psi | 89% | 3127 fps | 98.6% |
| Vihtavuori N570 | <<locked>> | 92% | 57,885 psi | 89% | 3123 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 90% | 54,723 psi | 84% | 3068 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,826 psi | 87% | 3018 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,869 psi | 88% | 3018 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,812 psi | 89% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,188 psi | 88% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,188 psi | 88% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,914 psi | 89% | 2969 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% | 49,908 psi | 77% | 2815 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 49,705 psi | 76% | 2812 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 50,488 psi | 78% | 2825 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 45,585 psi | 70% | 2828 fps | 95.6% |
| Accurate 8700 | <<locked>> | 96% | 45,397 psi | 70% | 2825 fps | 95.5% |
| Accurate 8700 | <<locked>> | 96% | 46,195 psi | 71% | 2838 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 80% | 52,359 psi | 81% | 2966 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 52,112 psi | 80% | 2963 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 52,866 psi | 81% | 2976 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 53,969 psi | 83% | 2949 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 53,954 psi | 83% | 2949 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 54,563 psi | 84% | 2959 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,342 psi | 76% | 2900 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 49,298 psi | 76% | 2900 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 49,908 psi | 77% | 2913 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 36,912 psi | 57% | 2638 fps | 97% |
| ADI AR 2217 | <<locked>> | 80% | 36,883 psi | 57% | 2635 fps | 97% |
| ADI AR 2217 | <<locked>> | 80% | 37,391 psi | 58% | 2648 fps | 97.2% |
| ADI AR 2218 | 79.4 gr | 90% | 45,556 psi | 70% | 2920 fps | 96.2% |
| ADI AR 2218 | 79.4 gr | 90% | 45,397 psi | 70% | 2913 fps | 96.1% |
| ADI AR 2218 | 79.4 gr | 88% | 42,888 psi | 66% | 2854 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 34,258 psi | 53% | 2608 fps | 98.8% |
| ADI AR 2225 | <<locked>> | 80% | 34,229 psi | 53% | 2608 fps | 98.7% |
| ADI AR 2225 | <<locked>> | 80% | 34,722 psi | 53% | 2618 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 54,259 psi | 84% | 2946 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 54,056 psi | 83% | 2943 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 54,824 psi | 84% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,766 psi | 83% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,548 psi | 82% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 54,302 psi | 84% | 2949 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,082 psi | 77% | 2900 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,067 psi | 77% | 2900 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,647 psi | 78% | 2910 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,791 psi | 75% | 2818 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,747 psi | 75% | 2822 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,400 psi | 76% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,975 psi | 66% | 2776 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,960 psi | 66% | 2772 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,569 psi | 67% | 2785 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,918 psi | 68% | 2835 fps | 95.5% |
| Alliant Reloder-33 | <<locked>> | 86% | 43,743 psi | 67% | 2831 fps | 95.4% |
| Alliant Reloder-33 | <<locked>> | 86% | 44,570 psi | 69% | 2844 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,587 psi | 73% | 2900 fps | 96.1% |
| Alliant Reloder-50 | <<locked>> | 92% | 47,369 psi | 73% | 2897 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 90% | 44,831 psi | 69% | 2838 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,572 psi | 72% | 2805 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,601 psi | 72% | 2802 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,992 psi | 72% | 2812 fps | 97% |
| Bofors RP15 | <<locked>> | 80% | 46,557 psi | 72% | 2831 fps | 99.5% |
| Bofors RP15 | <<locked>> | 80% | 46,557 psi | 72% | 2835 fps | 99.6% |
| Bofors RP15 | <<locked>> | 80% | 47,108 psi | 73% | 2844 fps | 99.6% |
| Bofors RP30 | <<locked>> | 80% | 40,205 psi | 62% | 2717 fps | 97.9% |
| Bofors RP30 | <<locked>> | 80% | 40,016 psi | 62% | 2713 fps | 97.9% |
| Bofors RP30 | <<locked>> | 80% | 40,756 psi | 63% | 2730 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 50,082 psi | 77% | 2900 fps | 99.9% |
| Bofors RP5 | <<locked>> | 80% | 50,067 psi | 77% | 2900 fps | 99.9% |
| Bofors RP5 | <<locked>> | 80% | 50,647 psi | 78% | 2910 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 40,234 psi | 62% | 2717 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 40,248 psi | 62% | 2717 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 40,770 psi | 63% | 2726 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 51,488 psi | 79% | 2894 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 80% | 51,488 psi | 79% | 2894 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 80% | 52,011 psi | 80% | 2904 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,662 psi | 78% | 2877 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,676 psi | 78% | 2877 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,198 psi | 79% | 2887 fps | 99.3% |
| Hodgdon Retumbo | 68.1 gr | 80% | 42,134 psi | 65% | 2838 fps | 99.6% |
| Hodgdon Retumbo | 68.1 gr | 80% | 42,090 psi | 65% | 2838 fps | 99.6% |
| Hodgdon Retumbo | 68.1 gr | 80% | 42,699 psi | 66% | 2848 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,645 psi | 44% | 1729 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,718 psi | 44% | 1732 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,616 psi | 44% | 1732 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,880 psi | 80% | 2877 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,851 psi | 80% | 2874 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,359 psi | 81% | 2884 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 80% | 48,269 psi | 74% | 2887 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 80% | 48,037 psi | 74% | 2884 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 80% | 48,631 psi | 75% | 2894 fps | 99.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,027 psi | 83% | 2890 fps | 95.4% |
| IMR 7977 Enduron | <<locked>> | 88% | 53,838 psi | 83% | 2884 fps | 95.3% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,433 psi | 84% | 2897 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,301 psi | 53% | 2585 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,113 psi | 53% | 2585 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 34,650 psi | 53% | 2595 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 43,018 psi | 66% | 2687 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 43,018 psi | 66% | 2687 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 43,584 psi | 67% | 2700 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,518 psi | 50% | 2552 fps | 97.1% |
| Norma 217 | <<locked>> | 80% | 32,329 psi | 50% | 2549 fps | 97% |
| Norma 217 | <<locked>> | 80% | 32,895 psi | 51% | 2562 fps | 97.3% |
| Norma MRP | <<locked>> | 80% | 53,650 psi | 83% | 2972 fps | 100% |
| Norma MRP | <<locked>> | 80% | 53,417 psi | 82% | 2972 fps | 100% |
| Norma MRP | <<locked>> | 80% | 54,215 psi | 83% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 49,066 psi | 76% | 2907 fps | 99.6% |
| Ramshot Grand | <<locked>> | 80% | 49,037 psi | 75% | 2907 fps | 99.6% |
| Ramshot Grand | <<locked>> | 80% | 49,661 psi | 76% | 2917 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 44,280 psi | 68% | 2772 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 44,063 psi | 68% | 2769 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 44,788 psi | 69% | 2782 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,399 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,472 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,530 psi | 45% | 1778 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,930 psi | 65% | 2815 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,698 psi | 64% | 2812 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,482 psi | 65% | 2825 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,595 psi | 59% | 2703 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,421 psi | 59% | 2697 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,088 psi | 60% | 2713 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 54,186 psi | 83% | 2920 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 80% | 54,201 psi | 83% | 2917 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 80% | 54,737 psi | 84% | 2930 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 53,664 psi | 83% | 2936 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 53,461 psi | 82% | 2930 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 54,027 psi | 83% | 2940 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,543 psi | 73% | 2844 fps | 95.8% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 47,572 psi | 73% | 2841 fps | 95.7% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 45,005 psi | 69% | 2792 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,316 psi | 82% | 2930 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,113 psi | 82% | 2927 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,679 psi | 83% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,809 psi | 83% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,824 psi | 83% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 54,360 psi | 84% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,398 psi | 73% | 2782 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 47,181 psi | 73% | 2779 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 47,906 psi | 74% | 2789 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 86% | 49,821 psi | 77% | 2854 fps | 95.8% |
| Vihtavuori N170 | <<locked>> | 86% | 49,821 psi | 77% | 2854 fps | 95.8% |
| Vihtavuori N170 | <<locked>> | 84% | 47,079 psi | 72% | 2802 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 53,780 psi | 83% | 2904 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 53,563 psi | 82% | 2897 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 54,230 psi | 83% | 2910 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,982 psi | 82% | 2979 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 80% | 52,765 psi | 81% | 2972 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 80% | 53,519 psi | 82% | 2989 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 44,483 psi | 68% | 2792 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 80% | 44,295 psi | 68% | 2789 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 80% | 44,991 psi | 69% | 2802 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 39,610 psi | 61% | 2720 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 80% | 39,436 psi | 61% | 2717 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 80% | 40,103 psi | 62% | 2733 fps | 95.9% |
| Vihtavuori N570 | 76 gr | 86% | 46,789 psi | 72% | 2913 fps | 96% |
| Vihtavuori N570 | 76 gr | 86% | 46,789 psi | 72% | 2913 fps | 96% |
| Vihtavuori N570 | 74.2 gr | 84% | 44,150 psi | 68% | 2851 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,168 psi | 76% | 2900 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,936 psi | 75% | 2897 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,821 psi | 77% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,937 psi | 77% | 2838 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,937 psi | 77% | 2838 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,444 psi | 78% | 2848 fps | 99.9% |
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 150 powders for 6.5-300 Weatherby Mag. loaded with the .264 | 140gr | Berger LRBT Target. ADI AR 2218 delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,159 fps. Accurate 8700 gives the best case fill at 100 %, and 150 of the 150 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Accurate 8700, Accurate 8700 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, ADI AR 2218, Vihtavuori N570 rank at the top here: for 6.5-300 Weatherby Mag. with the .264 | 140gr | Berger LRBT Target 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.