Load Specifications
Load data in caliber 6.5-06 Ackley Improved with .264 | 102gr | CutEdge ESP Raptor bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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 2015 | <<locked>> | 84% | 58,523 psi | 90% | 3140 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,783 psi | 89% | 3163 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 58,131 psi | 89% | 3225 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 58,378 psi | 90% | 3179 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,600 psi | 70% | 3051 fps | 96.7% |
| Accurate 4064 | <<locked>> | 90% | 57,914 psi | 89% | 3215 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,201 psi | 85% | 3258 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 58,247 psi | 90% | 3261 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,680 psi | 86% | 3199 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,869 psi | 88% | 3199 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 58,494 psi | 90% | 3176 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,853 psi | 84% | 3327 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,014 psi | 86% | 3225 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,492 psi | 87% | 3248 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,347 psi | 87% | 3327 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,986 psi | 89% | 3363 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,018 psi | 66% | 3081 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,269 psi | 76% | 3278 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 58,465 psi | 90% | 3274 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 56,797 psi | 87% | 3241 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,869 psi | 88% | 3212 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 58,421 psi | 90% | 3182 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,942 psi | 88% | 3235 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,840 psi | 87% | 3182 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,798 psi | 89% | 3258 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 55,738 psi | 86% | 3278 fps | 98% |
| Hodgdon H4350 | <<locked>> | 96% | 56,217 psi | 87% | 3241 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 84% | 55,056 psi | 85% | 3209 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,304 psi | 87% | 3241 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,274 psi | 85% | 3248 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,940 psi | 85% | 3291 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,694 psi | 55% | 2021 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,477 psi | 85% | 3199 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,377 psi | 88% | 3222 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 58,015 psi | 89% | 3228 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,217 psi | 88% | 3199 fps | 98% |
| IMR 4350 | <<locked>> | 98% | 57,406 psi | 88% | 3238 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 58,653 psi | 90% | 3245 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,953 psi | 81% | 3202 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 57,986 psi | 89% | 3284 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,869 psi | 88% | 3199 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 58,450 psi | 90% | 3228 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,174 psi | 88% | 3176 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 58,784 psi | 90% | 3235 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 58,160 psi | 90% | 3238 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 55,753 psi | 86% | 3219 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 56,623 psi | 87% | 3196 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,522 psi | 89% | 3199 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,695 psi | 86% | 3232 fps | 100% |
| Norma 204 | <<locked>> | 98% | 58,784 psi | 90% | 3301 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,718 psi | 75% | 3222 fps | 96.4% |
| Norma URP | <<locked>> | 98% | 57,798 psi | 89% | 3304 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 56,797 psi | 87% | 3261 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,000 psi | 88% | 3301 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 57,450 psi | 88% | 3222 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,203 psi | 88% | 3241 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,653 psi | 89% | 3199 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,998 psi | 55% | 2064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,856 psi | 89% | 3235 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,566 psi | 89% | 3327 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,595 psi | 89% | 3363 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,114 psi | 85% | 3278 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 58,479 psi | 90% | 3383 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 57,087 psi | 88% | 3173 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,159 psi | 88% | 3192 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,652 psi | 87% | 3232 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 56,869 psi | 88% | 3212 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 58,160 psi | 90% | 3238 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 58,450 psi | 90% | 3228 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 58,784 psi | 90% | 3235 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,753 psi | 86% | 3219 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,969 psi | 85% | 3241 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,840 psi | 86% | 3196 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,768 psi | 87% | 3225 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 58,001 psi | 89% | 3130 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 58,595 psi | 90% | 3123 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 58,523 psi | 90% | 3186 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 58,581 psi | 90% | 3238 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 57,377 psi | 88% | 3123 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,709 psi | 86% | 3189 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 57,029 psi | 88% | 3232 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,594 psi | 87% | 3307 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 3173 fps | 96.6% |
| Unknown powder | <<locked>> | 94% | 54,882 psi | 84% | 3251 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 82% | 57,348 psi | 88% | 3084 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 58,349 psi | 90% | 3110 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,319 psi | 88% | 3156 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 58,247 psi | 90% | 3176 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 58,755 psi | 90% | 3209 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,666 psi | 87% | 3245 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 57,363 psi | 88% | 3199 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,260 psi | 87% | 3163 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,738 psi | 86% | 3245 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,022 psi | 74% | 3169 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,116 psi | 88% | 3219 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,784 psi | 90% | 3268 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,738 psi | 86% | 3278 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,566 psi | 59% | 3087 fps | 99.4% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,607 psi | 84% | 3202 fps | 96% |
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 2015 | <<locked>> | 80% | 51,837 psi | 80% | 3041 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,034 psi | 68% | 2943 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,517 psi | 78% | 3107 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,645 psi | 73% | 2989 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 42,279 psi | 65% | 2982 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 41,655 psi | 64% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,781 psi | 55% | 2858 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 47,776 psi | 74% | 3074 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,640 psi | 63% | 2907 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,937 psi | 77% | 3084 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,821 psi | 78% | 3068 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,063 psi | 68% | 3114 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,509 psi | 62% | 2930 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,366 psi | 67% | 3002 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,737 psi | 55% | 2881 fps | 95.6% |
| Alliant Reloder-17 | 48 gr | 80% | 35,215 psi | 54% | 2890 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,995 psi | 48% | 2759 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,332 psi | 56% | 2969 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,529 psi | 73% | 3081 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 40,176 psi | 62% | 2930 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 46,775 psi | 72% | 3025 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,445 psi | 79% | 3071 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,342 psi | 76% | 3107 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,258 psi | 82% | 3130 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,988 psi | 63% | 2933 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 86% | 45,136 psi | 69% | 3074 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 92% | 49,603 psi | 76% | 3120 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 48,298 psi | 74% | 3091 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,777 psi | 47% | 2700 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,974 psi | 65% | 2999 fps | 99.2% |
| Hodgdon Superformance | 57.1 gr | 90% | 47,413 psi | 73% | 3146 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,426 psi | 41% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,815 psi | 66% | 2959 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 44,440 psi | 68% | 3009 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,784 psi | 61% | 2881 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,701 psi | 69% | 2963 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 47,369 psi | 73% | 3058 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,658 psi | 70% | 3005 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 35,679 psi | 55% | 2841 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 44,483 psi | 68% | 3035 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 49,937 psi | 77% | 3084 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,340 psi | 73% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,543 psi | 73% | 3009 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,612 psi | 66% | 2949 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 39,784 psi | 61% | 2881 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 43,149 psi | 66% | 2972 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,572 psi | 72% | 3018 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 47,297 psi | 73% | 3028 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,714 psi | 66% | 2986 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 54,723 psi | 84% | 3235 fps | 95.9% |
| Norma MRP | <<locked>> | 98% | 45,368 psi | 70% | 3153 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 36,056 psi | 55% | 2864 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 42,786 psi | 66% | 3002 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 40,437 psi | 62% | 2976 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,082 psi | 77% | 3094 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,995 psi | 77% | 3117 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,983 psi | 83% | 3140 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 41% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,495 psi | 64% | 2920 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,369 psi | 71% | 3123 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,550 psi | 58% | 2969 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,679 psi | 55% | 2877 fps | 95% |
| ReloadSwiss RS 70 | 52.4 gr | 86% | 38,159 psi | 59% | 2953 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 50,662 psi | 78% | 3068 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,382 psi | 68% | 2966 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,724 psi | 58% | 2864 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 46,775 psi | 72% | 3025 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,784 psi | 61% | 2881 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,340 psi | 73% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,612 psi | 66% | 2949 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 43,149 psi | 66% | 2972 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,015 psi | 60% | 2923 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,602 psi | 75% | 3068 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,383 psi | 71% | 3041 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,066 psi | 74% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,205 psi | 62% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,715 psi | 69% | 2940 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 54,476 psi | 84% | 3173 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,456 psi | 73% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,341 psi | 74% | 3061 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 38,435 psi | 59% | 2871 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 28,065 psi | 43% | 2674 fps | 95.6% |
| Somchem S385 | <<locked>> | 98% | 48,370 psi | 74% | 3104 fps | 95.7% |
| Unknown powder | <<locked>> | 84% | 39,160 psi | 60% | 2933 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 54,143 psi | 83% | 3038 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,573 psi | 75% | 2966 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,324 psi | 68% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,686 psi | 69% | 2953 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,637 psi | 56% | 2799 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 35,186 psi | 54% | 2805 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,183 psi | 77% | 3081 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,163 psi | 66% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,188 psi | 57% | 2867 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 34,011 psi | 52% | 2851 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,532 psi | 50% | 2713 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 54,534 psi | 84% | 3202 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 45,136 psi | 69% | 3074 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,444 psi | 48% | 2858 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,662 psi | 78% | 3133 fps | 95% |
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 99 powders for 6.5-06 Ackley Improved loaded with the .264 | 102gr | CutEdge ESP Raptor. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,383 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,383 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 102.0 gr projectile in 0.264" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 6.5-06 Ackley Improved with the .264 | 102gr | CutEdge ESP Raptor 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.