Load Specifications
Load data in caliber 6.5-06 A-Square with .264 | 128gr | Hasler Hunting bullet and 100 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-26 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>> | 82% | 55,796 psi | 86% | 2782 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,710 psi | 87% | 2854 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,563 psi | 84% | 2894 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 55,985 psi | 86% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,985 psi | 88% | 2949 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,000 psi | 88% | 3038 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 58,247 psi | 90% | 2913 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,869 psi | 86% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,943 psi | 89% | 2995 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,288 psi | 85% | 2982 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,201 psi | 85% | 2992 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,666 psi | 87% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,029 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,406 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,361 psi | 85% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,217 psi | 88% | 2982 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,244 psi | 83% | 2979 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,517 psi | 79% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,802 psi | 69% | 2838 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,317 psi | 85% | 3054 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 58,334 psi | 90% | 2933 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,937 psi | 77% | 2904 fps | 97.3% |
| Bofors RP3 | <<locked>> | 86% | 57,798 psi | 89% | 2910 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,244 psi | 83% | 2979 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 57,072 psi | 88% | 2897 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 58,117 psi | 89% | 2927 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,419 psi | 85% | 2946 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 58,610 psi | 90% | 2956 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 98% | 55,637 psi | 86% | 2930 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,059 psi | 89% | 2966 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 58,030 psi | 89% | 2927 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,680 psi | 86% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,656 psi | 67% | 2861 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 90% | 55,492 psi | 85% | 2979 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,506 psi | 56% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,420 psi | 87% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,535 psi | 85% | 2854 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,175 psi | 89% | 2890 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 58,073 psi | 89% | 2930 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,668 psi | 90% | 2923 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 57,116 psi | 88% | 2933 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,479 psi | 90% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,261 psi | 88% | 2920 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,866 psi | 81% | 2956 fps | 96.6% |
| Lovex S060 | <<locked>> | 82% | 56,855 psi | 87% | 2835 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,796 psi | 86% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,274 psi | 85% | 2864 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,565 psi | 87% | 2907 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,542 psi | 70% | 2746 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 57,130 psi | 88% | 2858 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,711 psi | 89% | 2851 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,318 psi | 87% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,216 psi | 85% | 2927 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 57,870 psi | 89% | 3068 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 55,332 psi | 85% | 2930 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,217 psi | 88% | 2927 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,084 psi | 82% | 2969 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 57,783 psi | 89% | 2986 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,572 psi | 73% | 2844 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,043 psi | 57% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 58,059 psi | 89% | 2913 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,363 psi | 90% | 2986 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,621 psi | 84% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,826 psi | 87% | 2972 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,332 psi | 85% | 2999 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,714 psi | 67% | 2858 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 84% | 57,769 psi | 89% | 2858 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,986 psi | 89% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,767 psi | 86% | 2904 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 98% | 56,521 psi | 87% | 2969 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 57,072 psi | 88% | 2897 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,274 psi | 85% | 2864 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,796 psi | 86% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,565 psi | 87% | 2907 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,695 psi | 86% | 2913 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,811 psi | 87% | 2887 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,696 psi | 89% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 58,726 psi | 90% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,682 psi | 90% | 2874 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,043 psi | 86% | 2963 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 57,522 psi | 88% | 2782 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,885 psi | 89% | 2900 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,798 psi | 89% | 2900 fps | 96.8% |
| Somchem S365 | <<locked>> | 96% | 58,726 psi | 90% | 2986 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,898 psi | 88% | 2940 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 82% | 58,218 psi | 90% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,986 psi | 89% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,262 psi | 90% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,579 psi | 86% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,696 psi | 89% | 2927 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,504 psi | 81% | 2854 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 56,420 psi | 87% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,811 psi | 87% | 2933 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,580 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 3058 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,363 psi | 88% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,419 psi | 85% | 2946 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,412 psi | 71% | 2969 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,116 psi | 88% | 2897 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,334 psi | 88% | 2936 fps | 98.4% |
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% | 52,199 psi | 80% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,676 psi | 76% | 2740 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 33,997 psi | 52% | 2503 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,443 psi | 76% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,652 psi | 58% | 2605 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 98% | 52,939 psi | 81% | 2972 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 54,665 psi | 84% | 2861 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,673 psi | 72% | 2717 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,454 psi | 68% | 2756 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 48,385 psi | 74% | 2858 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,605 psi | 79% | 2933 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,021 psi | 72% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,154 psi | 77% | 2808 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,724 psi | 56% | 2615 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,713 psi | 64% | 2743 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,135 psi | 68% | 2749 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,539 psi | 64% | 2740 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,992 psi | 42% | 2365 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,503 psi | 50% | 2539 fps | 95.1% |
| Alliant Reloder-26 | 48.1 gr | 82% | 30,850 psi | 47% | 2536 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,810 psi | 84% | 2881 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 43,758 psi | 67% | 2785 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,456 psi | 73% | 2753 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,539 psi | 64% | 2740 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,669 psi | 64% | 2621 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 47,834 psi | 74% | 2762 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,726 psi | 61% | 2654 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,554 psi | 65% | 2674 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,011 psi | 80% | 2871 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,763 psi | 78% | 2848 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,243 psi | 53% | 2510 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,228 psi | 80% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,901 psi | 63% | 2795 fps | 95.2% |
| Hodgdon Superformance | 48.4 gr | 80% | 38,667 psi | 59% | 2661 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 42% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,924 psi | 81% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,081 psi | 76% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,285 psi | 79% | 2779 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,885 psi | 61% | 2602 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,076 psi | 66% | 2651 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,361 psi | 56% | 2559 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,459 psi | 79% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,444 psi | 78% | 2808 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,458 psi | 76% | 2894 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 53,708 psi | 83% | 2789 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,385 psi | 76% | 2749 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,698 psi | 63% | 2605 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 39,015 psi | 60% | 2585 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 35,273 psi | 54% | 2533 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 53,592 psi | 82% | 2805 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,143 psi | 83% | 2802 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,545 psi | 76% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,034 psi | 69% | 2746 fps | 95.8% |
| Norma MRP | <<locked>> | 88% | 38,189 psi | 59% | 2694 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,608 psi | 58% | 2602 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,067 psi | 77% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,195 psi | 71% | 2841 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,434 psi | 56% | 2585 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 41,118 psi | 63% | 2717 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 43% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,819 psi | 74% | 2746 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,592 psi | 84% | 2930 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,324 psi | 68% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,420 psi | 58% | 2621 fps | 97.9% |
| ReloadSwiss RS 70 | 46.5 gr | 80% | 36,390 psi | 56% | 2628 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,072 psi | 59% | 2720 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,097 psi | 79% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,788 psi | 69% | 2700 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 49,240 psi | 76% | 2795 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 43,163 psi | 66% | 2733 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,669 psi | 64% | 2621 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,698 psi | 63% | 2605 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,385 psi | 76% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,015 psi | 60% | 2585 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,934 psi | 71% | 2753 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,374 psi | 82% | 2835 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,346 psi | 84% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,021 psi | 71% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,755 psi | 61% | 2546 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,757 psi | 66% | 2726 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 54,099 psi | 83% | 2736 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,020 psi | 69% | 2697 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,647 psi | 78% | 2785 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 33,968 psi | 52% | 2559 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,479 psi | 59% | 2602 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 54,926 psi | 85% | 2720 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,401 psi | 79% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,590 psi | 79% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,047 psi | 66% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,812 psi | 60% | 2598 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,480 psi | 62% | 2638 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,777 psi | 77% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,421 psi | 59% | 2602 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,747 psi | 46% | 2444 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 96% | 50,560 psi | 78% | 2930 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,101 psi | 59% | 2572 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,726 psi | 61% | 2654 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,440 psi | 39% | 2392 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,330 psi | 82% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,265 psi | 67% | 2697 fps | 95.4% |
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 106 powders for 6.5-06 A-Square loaded with the .264 | 128gr | Hasler Hunting. Norma MRP delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,068 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 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 128.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-26, Hodgdon Superformance rank at the top here: for 6.5-06 A-Square with the .264 | 128gr | Hasler Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.