Load Specifications
Load data in caliber 6.5-06 Ackley Improved with .264 | 135gr | TWENTY-NINE ERTP bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate MAGPRO and Accurate High Country.
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 2700 | <<locked>> | 82% | 57,827 psi | 89% | 2835 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 57,595 psi | 89% | 2897 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,769 psi | 89% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,492 psi | 85% | 2881 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,274 psi | 85% | 2989 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 96% | 56,246 psi | 87% | 2992 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 57,232 psi | 88% | 2848 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,304 psi | 87% | 2933 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 57,696 psi | 89% | 2989 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,005 psi | 69% | 2756 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,030 psi | 62% | 2717 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,536 psi | 87% | 2930 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,536 psi | 87% | 2930 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,363 psi | 90% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,682 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,217 psi | 87% | 2933 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,667 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,796 psi | 86% | 2920 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,232 psi | 88% | 2986 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 58,175 psi | 90% | 2956 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,459 psi | 78% | 2907 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,868 psi | 84% | 2999 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,072 psi | 86% | 2966 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,970 psi | 86% | 2835 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,340 psi | 71% | 2831 fps | 97% |
| Bofors RP5 | <<locked>> | 98% | 57,232 psi | 88% | 2986 fps | 99.4% |
| Bofors RP7 | <<locked>> | 88% | 58,508 psi | 90% | 2884 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,545 psi | 76% | 2848 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,999 psi | 86% | 2854 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,566 psi | 89% | 2936 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,652 psi | 87% | 2890 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 57,812 psi | 89% | 2933 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,811 psi | 87% | 2917 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,652 psi | 87% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,342 psi | 76% | 2959 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 88% | 58,146 psi | 89% | 2979 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 57% | 1788 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,768 psi | 87% | 2828 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,246 psi | 87% | 2864 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,536 psi | 87% | 2854 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,086 psi | 86% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,390 psi | 85% | 2858 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 55,448 psi | 85% | 2969 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 57,159 psi | 88% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,869 psi | 88% | 2851 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 58,421 psi | 90% | 2897 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,242 psi | 79% | 2802 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,972 psi | 89% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,334 psi | 88% | 2923 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 57,319 psi | 88% | 3012 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,638 psi | 89% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,043 psi | 86% | 2989 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 56,565 psi | 87% | 2923 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,143 psi | 83% | 2923 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 58% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,811 psi | 86% | 2841 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,188 psi | 88% | 2943 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,622 psi | 86% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,740 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,719 psi | 77% | 2956 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 56,144 psi | 86% | 2835 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,667 psi | 89% | 2900 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,230 psi | 85% | 2910 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 58,508 psi | 90% | 2884 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,869 psi | 88% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,159 psi | 88% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 58,421 psi | 90% | 2897 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,609 psi | 89% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,405 psi | 87% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,231 psi | 87% | 2805 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 58,363 psi | 90% | 2959 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 55,941 psi | 86% | 2828 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,767 psi | 86% | 2841 fps | 97.6% |
| Somchem S365 | <<locked>> | 92% | 57,914 psi | 89% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,782 psi | 86% | 2884 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 56,985 psi | 88% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,898 psi | 86% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,158 psi | 85% | 2861 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,740 psi | 89% | 2795 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 58,740 psi | 90% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,072 psi | 88% | 2936 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,232 psi | 88% | 3005 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,649 psi | 81% | 2913 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,535 psi | 85% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,566 psi | 89% | 2936 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,955 psi | 85% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,724 psi | 86% | 2877 fps | 99% |
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 2700 | <<locked>> | 80% | 54,172 psi | 83% | 2782 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 31,357 psi | 48% | 2402 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 54,346 psi | 84% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,322 psi | 65% | 2661 fps | 99.6% |
| Accurate High Country | 51.8 gr | 86% | 41,626 psi | 64% | 2733 fps | 95.1% |
| Accurate MAGPRO | 56.5 gr | 92% | 48,704 psi | 75% | 2861 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,763 psi | 78% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,611 psi | 63% | 2644 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 90% | 44,280 psi | 68% | 2749 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 42,206 psi | 65% | 2697 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 35,273 psi | 54% | 2595 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,305 psi | 59% | 2589 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,305 psi | 59% | 2589 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,750 psi | 80% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,940 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,683 psi | 63% | 2667 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,760 psi | 72% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,927 psi | 58% | 2582 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,305 psi | 59% | 2631 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,168 psi | 46% | 2431 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,110 psi | 46% | 2444 fps | 95.4% |
| Alliant Reloder-26 | 49.7 gr | 80% | 32,590 psi | 50% | 2556 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 38,029 psi | 59% | 2625 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 52,330 psi | 81% | 2782 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,524 psi | 62% | 2713 fps | 95.2% |
| Bofors RP5 | <<locked>> | 86% | 38,305 psi | 59% | 2631 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,672 psi | 70% | 2667 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 40,451 psi | 62% | 2664 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,417 psi | 81% | 2799 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,048 psi | 68% | 2707 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,746 psi | 72% | 2723 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 47,239 psi | 73% | 2756 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,427 psi | 71% | 2740 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,334 psi | 59% | 2556 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,898 psi | 58% | 2697 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 43,076 psi | 66% | 2723 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1598 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,417 psi | 82% | 2779 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,205 psi | 63% | 2598 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,065 psi | 72% | 2697 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 40,422 psi | 62% | 2608 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,064 psi | 71% | 2697 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 42,279 psi | 65% | 2720 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 53,809 psi | 83% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,512 psi | 69% | 2644 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,801 psi | 66% | 2631 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 30,792 psi | 47% | 2385 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 54,331 psi | 84% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,756 psi | 63% | 2628 fps | 95.8% |
| Norma MRP | <<locked>> | 82% | 34,911 psi | 54% | 2579 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,698 psi | 64% | 2651 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 42,032 psi | 65% | 2730 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 40,495 psi | 62% | 2641 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 37,507 psi | 58% | 2608 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 43% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,301 psi | 80% | 2789 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,617 psi | 76% | 2835 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,105 psi | 65% | 2677 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,466 psi | 62% | 2687 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,722 psi | 53% | 2612 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 49,284 psi | 76% | 2733 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,945 psi | 65% | 2621 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 39,726 psi | 61% | 2625 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 45,672 psi | 70% | 2667 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,512 psi | 69% | 2644 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 53,809 psi | 83% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,801 psi | 66% | 2631 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,473 psi | 78% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,835 psi | 77% | 2621 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,511 psi | 67% | 2592 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,378 psi | 61% | 2618 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 49,284 psi | 76% | 2726 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,716 psi | 70% | 2667 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 38,551 psi | 59% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,273 psi | 54% | 2493 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 47,152 psi | 73% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,120 psi | 66% | 2648 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 37,202 psi | 57% | 2533 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 54,157 psi | 83% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,511 psi | 65% | 2648 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,721 psi | 52% | 2507 fps | 98.5% |
| Vihtavuori N560 | <<locked>> | 90% | 46,311 psi | 71% | 2815 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 94% | 43,062 psi | 66% | 2736 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,061 psi | 65% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,280 psi | 68% | 2710 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,687 psi | 41% | 2421 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,465 psi | 61% | 2585 fps | 95.6% |
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 87 powders for 6.5-06 Ackley Improved loaded with the .264 | 135gr | TWENTY-NINE ERTP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,035 fps. ADI AR 2217 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.265" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Alliant Reloder-26, Accurate MAGPRO, Accurate High Country rank at the top here: for 6.5-06 Ackley Improved with the .264 | 135gr | TWENTY-NINE ERTP 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.