Load Specifications
Load data in caliber 6.5-06 Ackley Improved with .264 | 100gr | Hornady SP 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-16, ReloadSwiss RS 70 and Hodgdon Superformance.
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>> | 86% | 58,755 psi | 90% | 3205 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,782 psi | 87% | 3212 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,415 psi | 78% | 3173 fps | 98% |
| Accurate 4064 | <<locked>> | 86% | 55,332 psi | 85% | 3209 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,086 psi | 86% | 3307 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 58,073 psi | 89% | 3294 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,811 psi | 86% | 3238 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,406 psi | 88% | 3340 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,695 psi | 87% | 3238 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 58,523 psi | 90% | 3209 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,042 psi | 85% | 3366 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,537 psi | 89% | 3340 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,420 psi | 87% | 3268 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,884 psi | 88% | 3291 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,739 psi | 87% | 3369 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 58,421 psi | 90% | 3406 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,681 psi | 87% | 3330 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,065 psi | 72% | 3192 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,249 psi | 63% | 3077 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,273 psi | 84% | 3402 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 58,392 psi | 90% | 3310 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 57,580 psi | 89% | 3284 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,985 psi | 88% | 3258 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,146 psi | 89% | 3219 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,014 psi | 88% | 3271 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,899 psi | 89% | 3297 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 58,595 psi | 90% | 3363 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 58,378 psi | 90% | 3320 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 58,711 psi | 90% | 3307 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,101 psi | 88% | 3287 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,361 psi | 85% | 3284 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,317 psi | 85% | 3333 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 56% | 2070 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,362 psi | 87% | 3251 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,506 psi | 85% | 3232 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 58,798 psi | 90% | 3281 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,320 psi | 90% | 3258 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 57,725 psi | 89% | 3281 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,523 psi | 90% | 3284 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 56,724 psi | 87% | 3301 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 58,392 psi | 90% | 3327 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,695 psi | 87% | 3238 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 58,784 psi | 90% | 3268 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,116 psi | 88% | 3215 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,274 psi | 85% | 3215 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,639 psi | 90% | 3284 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 56,304 psi | 87% | 3264 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 56,724 psi | 87% | 3232 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,493 psi | 88% | 3232 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,173 psi | 86% | 3274 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,071 psi | 85% | 3274 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 53,272 psi | 82% | 3350 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 58,552 psi | 90% | 3350 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 57,130 psi | 88% | 3301 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,334 psi | 88% | 3343 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 57,043 psi | 88% | 3258 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,087 psi | 88% | 3274 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 56% | 2119 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,943 psi | 89% | 3278 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,769 psi | 89% | 3366 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,088 psi | 89% | 3402 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,231 psi | 87% | 3327 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 58,755 psi | 90% | 3422 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 57,392 psi | 88% | 3212 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,522 psi | 89% | 3235 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,450 psi | 88% | 3278 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,680 psi | 86% | 3310 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,985 psi | 88% | 3258 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,639 psi | 90% | 3284 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 58,784 psi | 90% | 3268 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,274 psi | 85% | 3215 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,304 psi | 87% | 3264 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,376 psi | 85% | 3281 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,072 psi | 86% | 3235 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,666 psi | 87% | 3261 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,856 psi | 89% | 3166 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,610 psi | 90% | 3159 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 58,523 psi | 90% | 3228 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,187 psi | 85% | 3304 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 57,305 psi | 88% | 3156 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,506 psi | 85% | 3222 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,319 psi | 88% | 3271 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 57,522 psi | 89% | 3350 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,420 psi | 87% | 3284 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 84% | 58,233 psi | 90% | 3146 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,566 psi | 89% | 3192 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,218 psi | 90% | 3209 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,274 psi | 85% | 3189 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,101 psi | 88% | 3287 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 57,450 psi | 88% | 3238 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,420 psi | 87% | 3202 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,420 psi | 87% | 3291 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,837 psi | 81% | 3284 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,348 psi | 88% | 3255 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,175 psi | 90% | 3291 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,955 psi | 85% | 3301 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,525 psi | 65% | 3225 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,869 psi | 88% | 3268 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 2495 | <<locked>> | 80% | 48,443 psi | 75% | 3048 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,514 psi | 72% | 3018 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 40,756 psi | 63% | 2972 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,832 psi | 71% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,374 psi | 53% | 2844 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 51,184 psi | 79% | 3176 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,497 psi | 67% | 3002 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 50,299 psi | 77% | 3209 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,272 psi | 82% | 3179 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,708 psi | 84% | 3156 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,645 psi | 73% | 3228 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 50,212 psi | 77% | 3205 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,685 psi | 67% | 3028 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,746 psi | 72% | 3104 fps | 99% |
| Alliant Reloder-16 | 48.5 gr | 82% | 36,129 psi | 56% | 2920 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,334 psi | 59% | 3005 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,530 psi | 76% | 3192 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,952 psi | 49% | 2815 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,653 psi | 59% | 3009 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,521 psi | 58% | 3028 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,010 psi | 79% | 3182 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 43,801 psi | 67% | 3038 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 47,094 psi | 72% | 3068 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,694 psi | 84% | 3163 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,229 psi | 82% | 3209 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,498 psi | 68% | 3045 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 44,701 psi | 69% | 3097 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 86% | 48,022 psi | 74% | 3123 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,721 psi | 80% | 3189 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,357 psi | 48% | 2743 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,385 psi | 74% | 3159 fps | 99.9% |
| Hodgdon Superformance | 59.3 gr | 88% | 47,747 psi | 73% | 3189 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 41% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,647 psi | 76% | 3133 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 52,185 psi | 80% | 3176 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,730 psi | 70% | 3045 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,124 psi | 74% | 3071 fps | 96.5% |
| IMR 4350 | <<locked>> | 88% | 44,875 psi | 69% | 3038 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,643 psi | 70% | 3041 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 35,534 psi | 55% | 2858 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 47,935 psi | 74% | 3136 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,272 psi | 82% | 3179 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,314 psi | 79% | 3150 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,430 psi | 78% | 3100 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 45,876 psi | 71% | 3045 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 40,190 psi | 62% | 2920 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 43,743 psi | 67% | 3018 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 50,241 psi | 77% | 3120 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,589 psi | 78% | 3123 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,151 psi | 71% | 3091 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 51,285 psi | 79% | 3205 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 46,325 psi | 71% | 3205 fps | 95.9% |
| Norma URP | <<locked>> | 82% | 36,840 psi | 57% | 2910 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 46,383 psi | 71% | 3107 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 41,089 psi | 63% | 3022 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 53,403 psi | 82% | 3192 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,316 psi | 82% | 3212 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 42% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,628 psi | 69% | 3022 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,285 psi | 77% | 3232 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,741 psi | 63% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,637 psi | 56% | 2923 fps | 95.5% |
| ReloadSwiss RS 70 | 54.4 gr | 84% | 38,682 psi | 60% | 3002 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 54,172 psi | 83% | 3159 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,747 psi | 73% | 3064 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,307 psi | 64% | 2976 fps | 99% |
| Rottweil R 905 | <<locked>> | 96% | 48,660 psi | 75% | 3176 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 47,094 psi | 72% | 3068 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,190 psi | 62% | 2920 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,314 psi | 79% | 3150 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,876 psi | 71% | 3045 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 43,743 psi | 67% | 3018 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,380 psi | 65% | 3028 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,301 psi | 80% | 3169 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,792 psi | 77% | 3140 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,039 psi | 79% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,975 psi | 66% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,223 psi | 70% | 2986 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,576 psi | 79% | 3238 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,879 psi | 78% | 3058 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,866 psi | 80% | 3159 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 41,872 psi | 64% | 2982 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 30,850 psi | 47% | 2785 fps | 97.2% |
| Somchem S385 | <<locked>> | 94% | 46,137 psi | 71% | 3091 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 51,532 psi | 79% | 3048 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,747 psi | 73% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,095 psi | 74% | 3048 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,871 psi | 61% | 2904 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 35,766 psi | 55% | 2848 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 53,548 psi | 82% | 3176 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,543 psi | 72% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,418 psi | 55% | 2848 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 32,851 psi | 51% | 2838 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,259 psi | 54% | 2818 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 54,273 psi | 84% | 3232 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,991 psi | 69% | 3104 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,414 psi | 47% | 2851 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,806 psi | 77% | 3146 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 98 powders for 6.5-06 Ackley Improved loaded with the .264 | 100gr | Hornady SP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,422 fps; across all powders the maximum-charge window runs from 2,070 fps to 3,422 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 100.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for 6.5-06 Ackley Improved with the .264 | 100gr | Hornady SP 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.