Load Specifications
Bullet:.264 | 101gr | Osprey Virtus
Bullet Manufacturer:Virtus
Bullet Weight:101 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5-06 Ackley Improved load data
Case Length (l3):2.489"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:72 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:64,977 psi
Recommended Twist Rate:1:13.5
Load data in caliber 6.5-06 Ackley Improved with .264 | 101gr | Osprey Virtus bullet and 103 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 H414.
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% | 55,071 psi | 85% | 3150 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,406 psi | 88% | 3219 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,908 psi | 78% | 3176 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 55,492 psi | 85% | 3205 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,652 psi | 87% | 3310 fps | 99.8% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,159 psi | 86% | 3396 fps | 96% |
| ADI AR 2206H | <<locked>> | 84% | 58,610 psi | 90% | 3301 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,376 psi | 87% | 3245 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,247 psi | 90% | 3353 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,348 psi | 88% | 3241 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,651 psi | 86% | 3373 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 58,407 psi | 90% | 3353 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,927 psi | 88% | 3268 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,406 psi | 88% | 3294 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,595 psi | 89% | 3379 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,405 psi | 85% | 3350 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,537 psi | 89% | 3340 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,734 psi | 78% | 3258 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,761 psi | 74% | 3199 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,626 psi | 64% | 3087 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,303 psi | 85% | 3412 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,042 psi | 85% | 3248 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 57,914 psi | 89% | 3287 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,734 psi | 78% | 3258 fps | 95.9% |
| Bofors RP7 | <<locked>> | 92% | 57,290 psi | 88% | 3258 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,523 psi | 90% | 3219 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,450 psi | 88% | 3268 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,537 psi | 90% | 3304 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 55,608 psi | 86% | 3307 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 90% | 55,259 psi | 85% | 3261 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 55,680 psi | 86% | 3255 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,841 psi | 89% | 3291 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,912 psi | 86% | 3284 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,173 psi | 86% | 3343 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 55% | 2067 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,724 psi | 87% | 3251 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,956 psi | 86% | 3232 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,767 psi | 86% | 3225 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,042 psi | 85% | 3199 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 58,349 psi | 90% | 3291 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,738 psi | 86% | 3235 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 57,276 psi | 88% | 3304 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,013 psi | 85% | 3264 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,348 psi | 88% | 3241 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,172 psi | 85% | 3209 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,435 psi | 88% | 3219 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,695 psi | 86% | 3219 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,317 psi | 85% | 3225 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 56,811 psi | 87% | 3271 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,858 psi | 64% | 2995 fps | 96.1% |
| Norma 201 | <<locked>> | 84% | 57,130 psi | 88% | 3235 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,073 psi | 89% | 3235 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,652 psi | 87% | 3281 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,666 psi | 86% | 3284 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 54,230 psi | 83% | 3360 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 55,550 psi | 85% | 3297 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 57,566 psi | 89% | 3304 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 58,262 psi | 90% | 3353 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 57,769 psi | 89% | 3264 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,841 psi | 89% | 3284 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,390 psi | 56% | 2113 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,610 psi | 90% | 3284 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,436 psi | 90% | 3369 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,868 psi | 84% | 3346 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,811 psi | 87% | 3333 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,535 psi | 85% | 3366 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 57,464 psi | 88% | 3209 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,624 psi | 89% | 3235 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,740 psi | 89% | 3278 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,550 psi | 87% | 3320 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 57,290 psi | 88% | 3258 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,317 psi | 85% | 3225 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,172 psi | 85% | 3209 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,695 psi | 86% | 3219 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,811 psi | 87% | 3271 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,130 psi | 86% | 3287 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,420 psi | 87% | 3241 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,159 psi | 88% | 3264 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,218 psi | 90% | 3166 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,492 psi | 85% | 3110 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,361 psi | 85% | 3173 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,057 psi | 86% | 3314 fps | 97.1% |
| Somchem S335 | <<locked>> | 84% | 57,754 psi | 89% | 3159 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,985 psi | 86% | 3225 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,725 psi | 89% | 3274 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 58,610 psi | 90% | 3360 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 3291 fps | 98% |
| Vihtavuori N133 | <<locked>> | 84% | 58,697 psi | 90% | 3150 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,885 psi | 89% | 3192 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,755 psi | 90% | 3212 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,637 psi | 86% | 3192 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,769 psi | 89% | 3294 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,414 psi | 76% | 3136 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 57,754 psi | 89% | 3241 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,855 psi | 88% | 3202 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,927 psi | 88% | 3294 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,301 psi | 82% | 3287 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 58,189 psi | 90% | 3261 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,465 psi | 90% | 3291 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,608 psi | 86% | 3307 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,134 psi | 66% | 3238 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,305 psi | 88% | 3271 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,925 psi | 83% | 3225 fps | 96.4% |
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% | 47,964 psi | 74% | 3035 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,818 psi | 72% | 3025 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 40,901 psi | 63% | 2972 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,411 psi | 70% | 3031 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,214 psi | 53% | 2838 fps | 95.2% |
| Accurate High Country | <<locked>> | 98% | 52,170 psi | 80% | 3320 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 51,459 psi | 79% | 3176 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,787 psi | 67% | 3005 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 96% | 50,821 psi | 78% | 3219 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,606 psi | 83% | 3179 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,196 psi | 74% | 3232 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 51,039 psi | 79% | 3219 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,874 psi | 68% | 3028 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,949 psi | 72% | 3104 fps | 99.2% |
| Alliant Reloder-16 | 48.4 gr | 80% | 33,924 psi | 52% | 2854 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,595 psi | 59% | 3005 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,328 psi | 77% | 3209 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,456 psi | 73% | 3192 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,950 psi | 46% | 2749 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 39,044 psi | 60% | 3018 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,652 psi | 58% | 3028 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,445 psi | 79% | 3186 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 44,034 psi | 68% | 3038 fps | 99.6% |
| Bofors RP5 | <<locked>> | 98% | 47,456 psi | 73% | 3192 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 44,208 psi | 68% | 3005 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 55,056 psi | 85% | 3166 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,664 psi | 83% | 3209 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,556 psi | 69% | 3041 fps | 97.9% |
| Hodgdon H414 | 53.6 gr | 84% | 42,192 psi | 65% | 3035 fps | 95% |
| Hodgdon H4350 | <<locked>> | 86% | 48,443 psi | 75% | 3130 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 52,011 psi | 80% | 3189 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,357 psi | 48% | 2743 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,660 psi | 75% | 3159 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 44,846 psi | 69% | 3120 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 41% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,995 psi | 77% | 3136 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 52,344 psi | 81% | 3176 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,035 psi | 71% | 3048 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,341 psi | 74% | 3074 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 45,194 psi | 70% | 3041 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,265 psi | 67% | 2989 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 35,520 psi | 55% | 2854 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 48,153 psi | 74% | 3136 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 53,606 psi | 83% | 3179 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,416 psi | 79% | 3150 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,778 psi | 78% | 3104 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 46,035 psi | 71% | 3048 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,681 psi | 58% | 2858 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 43,888 psi | 68% | 3022 fps | 95.9% |
| Lovex S071 | <<locked>> | 98% | 39,059 psi | 60% | 2933 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 50,067 psi | 77% | 3117 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,879 psi | 78% | 3120 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,311 psi | 71% | 3091 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 51,851 psi | 80% | 3215 fps | 95.8% |
| Norma MRP | <<locked>> | 94% | 43,613 psi | 67% | 3140 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,490 psi | 53% | 2844 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,804 psi | 72% | 3110 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 41,307 psi | 64% | 3022 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 53,824 psi | 83% | 3196 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,824 psi | 83% | 3215 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 42% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,715 psi | 69% | 3025 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,604 psi | 78% | 3235 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,104 psi | 63% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,854 psi | 57% | 2923 fps | 95.8% |
| ReloadSwiss RS 70 | 55.6 gr | 84% | 38,798 psi | 60% | 3002 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 53,998 psi | 83% | 3156 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,616 psi | 73% | 3061 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,321 psi | 64% | 2972 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 96% | 49,182 psi | 76% | 3186 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 44,208 psi | 68% | 3005 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,681 psi | 58% | 2858 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,416 psi | 79% | 3150 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,035 psi | 71% | 3048 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 43,888 psi | 68% | 3022 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,525 psi | 65% | 3028 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,373 psi | 81% | 3169 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,966 psi | 77% | 3140 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,126 psi | 79% | 3058 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,018 psi | 66% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,308 psi | 65% | 2920 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,733 psi | 75% | 3179 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,807 psi | 78% | 3051 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,315 psi | 81% | 3166 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,698 psi | 64% | 2976 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 30,966 psi | 48% | 2785 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 46,717 psi | 72% | 3097 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 51,692 psi | 80% | 3045 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,761 psi | 74% | 3035 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,370 psi | 74% | 3048 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,929 psi | 61% | 2900 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 35,853 psi | 55% | 2848 fps | 95.7% |
| Vihtavuori N165 | <<locked>> | 98% | 45,977 psi | 71% | 3068 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 54,157 psi | 83% | 3182 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,673 psi | 72% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,389 psi | 54% | 2844 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 32,909 psi | 51% | 2835 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,389 psi | 54% | 2818 fps | 98% |
| Winchester 748 | <<locked>> | 80% | 54,578 psi | 84% | 3232 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 42,192 psi | 65% | 3035 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,371 psi | 47% | 2848 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,995 psi | 77% | 3146 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,067 psi | 77% | 3156 fps | 95.5% |
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 103 powders for 6.5-06 Ackley Improved loaded with the .264 | 101gr | Osprey Virtus. Alliant Reloder-26 delivers the highest muzzle velocity at 3,412 fps; across all powders the maximum-charge window runs from 2,067 fps to 3,412 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 101.0 gr projectile in 0.264" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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 H414 rank at the top here: for 6.5-06 Ackley Improved with the .264 | 101gr | Osprey Virtus 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.