Load Specifications
Load data in caliber 6.5-06 Ackley Improved with .264 | 110gr | Hasler Hunting bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Alliant Reloder-26.
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>> | 84% | 58,059 psi | 89% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,796 psi | 86% | 3071 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,461 psi | 82% | 3104 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 58,508 psi | 90% | 3117 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,796 psi | 86% | 3169 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 57,203 psi | 88% | 3146 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 58,334 psi | 90% | 3146 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,623 psi | 87% | 3205 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 58,218 psi | 90% | 3284 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,956 psi | 88% | 3205 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,564 psi | 86% | 3117 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,970 psi | 86% | 3143 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,289 psi | 87% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,885 psi | 89% | 3255 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,144 psi | 86% | 3196 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,287 psi | 82% | 3189 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,111 psi | 77% | 3123 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,729 psi | 67% | 3028 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,189 psi | 90% | 3337 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,290 psi | 88% | 3159 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,805 psi | 75% | 3104 fps | 96% |
| Bofors RP3 | <<locked>> | 86% | 56,536 psi | 87% | 3133 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,287 psi | 82% | 3189 fps | 97.2% |
| Bofors RP7 | <<locked>> | 90% | 56,057 psi | 86% | 3114 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,087 psi | 88% | 3153 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 57,957 psi | 89% | 3222 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 90% | 57,696 psi | 89% | 3179 fps | 98.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,494 psi | 90% | 3202 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 57,870 psi | 89% | 3156 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,724 psi | 87% | 3146 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 58,320 psi | 90% | 3192 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 58,537 psi | 90% | 3261 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 56% | 1975 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,216 psi | 85% | 3100 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 58,465 psi | 90% | 3130 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,972 psi | 89% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,116 psi | 88% | 3110 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 57,159 psi | 88% | 3150 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,595 psi | 89% | 3143 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 56,057 psi | 86% | 3156 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,435 psi | 88% | 3176 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 57,856 psi | 89% | 3117 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,999 psi | 86% | 3064 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 58,088 psi | 89% | 3123 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,870 psi | 89% | 3143 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,724 psi | 86% | 3130 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,411 psi | 68% | 2936 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 55,782 psi | 86% | 3084 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,608 psi | 87% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,274 psi | 85% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 94% | 58,088 psi | 89% | 3202 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 56,637 psi | 87% | 3284 fps | 99% |
| Norma URP | <<locked>> | 94% | 58,146 psi | 89% | 3212 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,246 psi | 87% | 3156 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,855 psi | 88% | 3205 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,702 psi | 72% | 3038 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 57% | 2021 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,884 psi | 88% | 3130 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,043 psi | 88% | 3215 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,159 psi | 88% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,579 psi | 86% | 3189 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 58,015 psi | 89% | 3281 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 56,594 psi | 87% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,695 psi | 87% | 3130 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 58,378 psi | 90% | 3176 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 55,172 psi | 85% | 3176 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 56,057 psi | 86% | 3114 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,870 psi | 89% | 3143 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,856 psi | 89% | 3117 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 58,088 psi | 89% | 3123 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,724 psi | 86% | 3130 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 58,465 psi | 90% | 3196 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,724 psi | 86% | 3110 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,550 psi | 87% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,609 psi | 89% | 3012 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,682 psi | 89% | 3091 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,523 psi | 90% | 3235 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 56,260 psi | 87% | 3009 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 58,262 psi | 90% | 3133 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,507 psi | 87% | 3123 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,203 psi | 88% | 3209 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,999 psi | 86% | 3153 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 82% | 57,029 psi | 88% | 2992 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,000 psi | 88% | 3045 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,101 psi | 88% | 3054 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 58,117 psi | 89% | 3100 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,608 psi | 87% | 3150 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,488 psi | 79% | 3058 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 55,521 psi | 85% | 3054 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,738 psi | 86% | 3150 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,333 psi | 87% | 3212 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 3268 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,492 psi | 87% | 3114 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 58,233 psi | 90% | 3228 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,498 psi | 70% | 3179 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,014 psi | 86% | 3120 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,188 psi | 86% | 3143 fps | 97.5% |
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% | 51,097 psi | 79% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,863 psi | 75% | 2946 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 38,029 psi | 59% | 2799 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,399 psi | 74% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,695 psi | 56% | 2789 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 80% | 53,679 psi | 83% | 3087 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,629 psi | 70% | 2923 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 46,630 psi | 72% | 3018 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,299 psi | 77% | 3150 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,746 psi | 72% | 3015 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,021 psi | 71% | 2949 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,226 psi | 76% | 3025 fps | 99.7% |
| Alliant Reloder-16 | 46.6 gr | 80% | 35,940 psi | 55% | 2805 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,538 psi | 62% | 2936 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,166 psi | 71% | 3009 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,586 psi | 72% | 3061 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,949 psi | 43% | 2582 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,216 psi | 56% | 2838 fps | 95.5% |
| Alliant Reloder-26 | 55.2 gr | 86% | 34,592 psi | 53% | 2841 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,519 psi | 82% | 3097 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 45,629 psi | 70% | 3038 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 46,354 psi | 71% | 2963 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,586 psi | 72% | 3061 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 43,584 psi | 67% | 2877 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 46,688 psi | 72% | 2969 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 41,481 psi | 64% | 2904 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 44,411 psi | 68% | 2930 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 54,650 psi | 84% | 3136 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 54,288 psi | 84% | 3097 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,257 psi | 51% | 2687 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,937 psi | 78% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,540 psi | 67% | 2979 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,764 psi | 80% | 3038 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,940 psi | 85% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,935 psi | 74% | 2963 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,328 psi | 77% | 2992 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 41,524 psi | 64% | 2848 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,206 psi | 65% | 2848 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 35,360 psi | 54% | 2743 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 50,473 psi | 78% | 3058 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 54,215 psi | 83% | 3064 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,576 psi | 81% | 3009 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,211 psi | 74% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,885 psi | 61% | 2799 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 40,640 psi | 63% | 2831 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 36,550 psi | 56% | 2762 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 52,620 psi | 81% | 3031 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,069 psi | 82% | 3025 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,573 psi | 75% | 3009 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,326 psi | 73% | 3009 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 42,902 psi | 66% | 3012 fps | 96% |
| Norma URP | <<locked>> | 80% | 36,579 psi | 56% | 2789 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,878 psi | 75% | 3031 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,985 psi | 58% | 2828 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 43,265 psi | 67% | 2966 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 42% | 1808 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,775 psi | 72% | 2949 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,316 psi | 82% | 3153 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,091 psi | 66% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,492 psi | 56% | 2805 fps | 96.5% |
| ReloadSwiss RS 70 | 50.9 gr | 80% | 35,505 psi | 55% | 2805 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,053 psi | 77% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,700 psi | 67% | 2904 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,474 psi | 79% | 3054 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 45,020 psi | 69% | 2986 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 43,584 psi | 67% | 2877 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,885 psi | 61% | 2799 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,215 psi | 83% | 3064 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,211 psi | 74% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,640 psi | 63% | 2831 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,904 psi | 69% | 2959 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,301 psi | 80% | 3054 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,229 psi | 82% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,962 psi | 69% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,611 psi | 64% | 2795 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,732 psi | 73% | 3041 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,156 psi | 82% | 2959 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,389 psi | 84% | 3074 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,092 psi | 68% | 2904 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 32,938 psi | 51% | 2736 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 43,018 psi | 66% | 2910 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 53,751 psi | 83% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,169 psi | 77% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,459 psi | 78% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,047 psi | 65% | 2828 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,927 psi | 58% | 2789 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 45,252 psi | 70% | 2943 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,660 psi | 75% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,391 psi | 58% | 2785 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 30,777 psi | 47% | 2667 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 98% | 53,243 psi | 82% | 3202 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,159 psi | 57% | 2756 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 41,481 psi | 64% | 2904 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,355 psi | 44% | 2680 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,257 psi | 80% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,907 psi | 75% | 3018 fps | 95.9% |
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 97 powders for 6.5-06 Ackley Improved loaded with the .264 | 110gr | Hasler Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,337 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 110.0 gr projectile in 0.264" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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. ReloadSwiss RS 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for 6.5-06 Ackley Improved with the .264 | 110gr | Hasler Hunting 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.