Load Specifications
Load data in caliber 6.5-06 Ackley Improved with .264 | 124gr | Peregrine VLR-4 bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Ramshot Grand.
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 2495 | <<locked>> | 82% | 55,564 psi | 86% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,697 psi | 90% | 2949 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,376 psi | 85% | 2979 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 55,999 psi | 86% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,566 psi | 89% | 3031 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 58,697 psi | 90% | 2999 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,579 psi | 87% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,955 psi | 85% | 3025 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,594 psi | 87% | 3084 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,144 psi | 86% | 3081 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,305 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,653 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 58,682 psi | 90% | 3097 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,202 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,160 psi | 90% | 3071 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,579 psi | 86% | 3074 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,417 psi | 81% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,295 psi | 70% | 2920 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,521 psi | 87% | 3143 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,720 psi | 78% | 2989 fps | 97.6% |
| Bofors RP3 | <<locked>> | 86% | 58,363 psi | 90% | 2995 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,579 psi | 86% | 3074 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 57,624 psi | 89% | 2982 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 58,682 psi | 90% | 3012 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,392 psi | 88% | 3054 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 92% | 57,812 psi | 89% | 3025 fps | 98.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 51,924 psi | 80% | 2943 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,419 psi | 85% | 3002 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 58,798 psi | 90% | 3009 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,942 psi | 88% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,512 psi | 69% | 2956 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 90% | 56,666 psi | 87% | 3071 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 56% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,072 psi | 86% | 2943 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,593 psi | 86% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,448 psi | 85% | 2930 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,798 psi | 89% | 2963 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 55,187 psi | 85% | 2963 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,825 psi | 86% | 2956 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 55,390 psi | 85% | 2986 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,332 psi | 85% | 2972 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,088 psi | 89% | 3009 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 58,146 psi | 89% | 3120 fps | 97.9% |
| Lovex S060 | <<locked>> | 82% | 57,551 psi | 89% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,159 psi | 86% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,738 psi | 86% | 2949 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 57,145 psi | 88% | 2995 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,890 psi | 71% | 2822 fps | 98.7% |
| Norma 201 | <<locked>> | 82% | 57,232 psi | 88% | 2936 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,276 psi | 90% | 2933 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,898 psi | 88% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,347 psi | 87% | 3018 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 54,998 psi | 85% | 3097 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 56,115 psi | 86% | 3015 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 58,175 psi | 90% | 3015 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 58,334 psi | 90% | 3133 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 94% | 58,798 psi | 90% | 3074 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,781 psi | 84% | 3041 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 57% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,143 psi | 85% | 2946 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,666 psi | 86% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,856 psi | 89% | 3061 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,289 psi | 87% | 3091 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,338 psi | 68% | 2946 fps | 98% |
| Rottweil R 902 | <<locked>> | 84% | 58,117 psi | 89% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,610 psi | 90% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,855 psi | 88% | 2995 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 57,508 psi | 89% | 3058 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 57,624 psi | 89% | 2982 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,738 psi | 86% | 2949 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,159 psi | 86% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,145 psi | 88% | 2995 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,666 psi | 87% | 3002 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,392 psi | 88% | 2972 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,189 psi | 90% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,883 psi | 86% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,564 psi | 86% | 2907 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,029 psi | 88% | 3054 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 57,711 psi | 89% | 2861 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,247 psi | 90% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 58,508 psi | 90% | 2989 fps | 97.1% |
| Somchem S365 | <<locked>> | 94% | 55,898 psi | 86% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,899 psi | 89% | 3028 fps | 99.3% |
| Unknown powder | <<locked>> | 90% | 56,971 psi | 88% | 3025 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 58,798 psi | 90% | 2848 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,682 psi | 90% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,201 psi | 85% | 2861 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,217 psi | 87% | 2910 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 58,407 psi | 90% | 3012 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,447 psi | 82% | 2946 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 57,159 psi | 88% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,566 psi | 89% | 3018 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 58,436 psi | 90% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,245 psi | 85% | 3087 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 58,523 psi | 90% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,392 psi | 88% | 3054 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,747 psi | 73% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,144 psi | 86% | 2992 fps | 98.4% |
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 2495 | <<locked>> | 80% | 52,069 psi | 80% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,020 psi | 69% | 2720 fps | 97% |
| Accurate 3100 | <<locked>> | 86% | 34,084 psi | 52% | 2569 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 49,414 psi | 76% | 2815 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,797 psi | 58% | 2677 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 80% | 55,245 psi | 85% | 2946 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,789 psi | 72% | 2792 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,032 psi | 65% | 2779 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 49,110 psi | 76% | 2949 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,301 psi | 80% | 3018 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,297 psi | 73% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,647 psi | 78% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,970 psi | 57% | 2694 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,221 psi | 65% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,771 psi | 64% | 2772 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,148 psi | 65% | 2822 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,847 psi | 41% | 2428 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,706 psi | 50% | 2615 fps | 95.4% |
| Alliant Reloder-26 | 50.9 gr | 82% | 30,893 psi | 48% | 2602 fps | 95.4% |
| Bofors RP15 | <<locked>> | 94% | 41,568 psi | 64% | 2808 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 47,703 psi | 73% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,148 psi | 65% | 2822 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 41,771 psi | 64% | 2697 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 48,080 psi | 74% | 2841 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 43,598 psi | 67% | 2808 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 82% | 41,974 psi | 65% | 2733 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 98% | 48,660 psi | 75% | 2884 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,590 psi | 79% | 2940 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,461 psi | 53% | 2579 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,676 psi | 76% | 2890 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,539 psi | 64% | 2887 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 38,914 psi | 60% | 2736 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 42% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,530 psi | 76% | 2841 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,069 psi | 80% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,934 psi | 71% | 2769 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,020 psi | 69% | 2740 fps | 97.7% |
| IMR 4350 | <<locked>> | 82% | 40,161 psi | 62% | 2680 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,323 psi | 67% | 2730 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 32,866 psi | 51% | 2543 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 52,011 psi | 80% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,834 psi | 74% | 2831 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 47,282 psi | 73% | 2927 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 53,896 psi | 83% | 2867 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,342 psi | 76% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,785 psi | 63% | 2677 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,986 psi | 60% | 2654 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 32,851 psi | 51% | 2539 fps | 95% |
| Norma 201 | <<locked>> | 80% | 53,824 psi | 83% | 2887 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,505 psi | 84% | 2881 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,024 psi | 77% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,656 psi | 66% | 2769 fps | 95.2% |
| Norma MRP | <<locked>> | 88% | 38,479 psi | 59% | 2772 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,739 psi | 58% | 2674 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,560 psi | 78% | 2900 fps | 100% |
| Ramshot Grand | 57.2 gr | 92% | 46,427 psi | 71% | 2920 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,579 psi | 56% | 2657 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 92% | 40,118 psi | 62% | 2766 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,269 psi | 74% | 2828 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,918 psi | 69% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,724 psi | 58% | 2697 fps | 98% |
| ReloadSwiss RS 70 | 49.2 gr | 80% | 36,593 psi | 56% | 2703 fps | 97.4% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,522 psi | 59% | 2805 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,082 psi | 79% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,860 psi | 69% | 2772 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,557 psi | 72% | 2818 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 40,785 psi | 63% | 2753 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 41,771 psi | 64% | 2697 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,785 psi | 63% | 2677 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 49,342 psi | 76% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,986 psi | 60% | 2654 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,238 psi | 71% | 2831 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,737 psi | 83% | 2917 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,650 psi | 84% | 2818 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,224 psi | 71% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,929 psi | 61% | 2618 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,410 psi | 67% | 2812 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 54,360 psi | 84% | 2815 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,179 psi | 70% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,256 psi | 79% | 2871 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,040 psi | 52% | 2625 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,725 psi | 60% | 2677 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 40,712 psi | 63% | 2733 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 55,274 psi | 85% | 2799 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,663 psi | 80% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,895 psi | 80% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,192 psi | 66% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,146 psi | 60% | 2674 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,843 psi | 63% | 2713 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 50,111 psi | 77% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,566 psi | 59% | 2674 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,660 psi | 46% | 2507 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 94% | 48,022 psi | 74% | 2953 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,290 psi | 59% | 2641 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 43,598 psi | 67% | 2808 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,266 psi | 39% | 2451 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,047 psi | 65% | 2743 fps | 95.3% |
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 105 powders for 6.5-06 Ackley Improved loaded with the .264 | 124gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,143 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, 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. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Alliant Reloder-26, ReloadSwiss RS 70, Ramshot Grand rank at the top here: for 6.5-06 Ackley Improved with the .264 | 124gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.