Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:128 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5-06 A-Square load data
Case Length (l3):2.494"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65.7 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:8.5
Load data in caliber 6.5-06 A-Square with .264 | 128gr | MRR Green Long Range 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, 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% | 56,014 psi | 86% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,826 psi | 87% | 2858 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,042 psi | 85% | 2904 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,188 psi | 86% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,159 psi | 88% | 2953 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,421 psi | 88% | 3048 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 58,726 psi | 90% | 2920 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,347 psi | 87% | 2877 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 58,030 psi | 89% | 2995 fps | 98.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,738 psi | 86% | 2992 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,709 psi | 86% | 2999 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,188 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,188 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,885 psi | 89% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,492 psi | 85% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,334 psi | 88% | 2982 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,665 psi | 84% | 2986 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,590 psi | 79% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,889 psi | 69% | 2844 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,767 psi | 86% | 3061 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,053 psi | 77% | 2907 fps | 97.3% |
| Bofors RP3 | <<locked>> | 86% | 58,305 psi | 90% | 2917 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,665 psi | 84% | 2986 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 57,246 psi | 88% | 2900 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 58,610 psi | 90% | 2936 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,579 psi | 86% | 2949 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,448 psi | 85% | 2910 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 56,072 psi | 86% | 2936 fps | 96.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 58,523 psi | 90% | 2976 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 58,204 psi | 90% | 2930 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,188 psi | 86% | 2917 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,990 psi | 68% | 2871 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 55,927 psi | 86% | 2989 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 56% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,623 psi | 87% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,709 psi | 86% | 2858 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 58,320 psi | 90% | 2894 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 58,189 psi | 90% | 2933 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 58,784 psi | 90% | 2927 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 57,566 psi | 89% | 2943 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 58,682 psi | 90% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,319 psi | 88% | 2923 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,287 psi | 82% | 2963 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 57,043 psi | 88% | 2838 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,985 psi | 86% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,724 psi | 86% | 2874 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,000 psi | 88% | 2917 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,658 psi | 70% | 2749 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 57,290 psi | 88% | 2861 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,943 psi | 89% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,478 psi | 87% | 2904 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,666 psi | 86% | 2933 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 58,291 psi | 90% | 3074 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 55,854 psi | 86% | 2936 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,696 psi | 89% | 2936 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,461 psi | 82% | 2976 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 58,233 psi | 90% | 2992 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,964 psi | 74% | 2854 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 57% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 58,233 psi | 90% | 2917 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 58,537 psi | 90% | 2992 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,781 psi | 84% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,971 psi | 88% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,448 psi | 85% | 3005 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,034 psi | 68% | 2867 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 57,928 psi | 89% | 2861 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,131 psi | 89% | 2910 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,188 psi | 86% | 2910 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 56,652 psi | 87% | 2969 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,246 psi | 88% | 2900 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,724 psi | 86% | 2874 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,985 psi | 86% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,000 psi | 88% | 2917 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,159 psi | 86% | 2920 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,956 psi | 88% | 2890 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,885 psi | 89% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,535 psi | 85% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 58,798 psi | 90% | 2877 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,159 psi | 86% | 2966 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 57,740 psi | 89% | 2785 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,030 psi | 89% | 2907 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 58,146 psi | 89% | 2907 fps | 96.9% |
| Somchem S365 | <<locked>> | 94% | 55,042 psi | 85% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,319 psi | 88% | 2946 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 82% | 58,421 psi | 90% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 58,233 psi | 90% | 2815 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 58,436 psi | 90% | 2831 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,738 psi | 86% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,827 psi | 89% | 2930 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,924 psi | 81% | 2864 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 56,579 psi | 87% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,913 psi | 88% | 2933 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,711 psi | 89% | 2995 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 58,508 psi | 90% | 3064 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,769 psi | 89% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,912 psi | 86% | 2953 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,760 psi | 72% | 2979 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,290 psi | 88% | 2900 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,769 psi | 89% | 2946 fps | 98.5% |
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% | 52,417 psi | 81% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,140 psi | 77% | 2746 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 34,113 psi | 52% | 2507 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,690 psi | 76% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,072 psi | 59% | 2615 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 53,359 psi | 82% | 2982 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 55,143 psi | 85% | 2871 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,847 psi | 72% | 2720 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 42,003 psi | 65% | 2707 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 48,776 psi | 75% | 2867 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,779 psi | 80% | 2936 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,224 psi | 73% | 2743 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,662 psi | 78% | 2818 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,898 psi | 57% | 2621 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,901 psi | 64% | 2746 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,524 psi | 64% | 2697 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,930 psi | 65% | 2749 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,122 psi | 42% | 2372 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,808 psi | 50% | 2549 fps | 95.3% |
| Alliant Reloder-26 | 48.3 gr | 82% | 30,980 psi | 48% | 2543 fps | 95.4% |
| Bofors RP15 | <<locked>> | 96% | 44,150 psi | 68% | 2795 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,616 psi | 73% | 2756 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,930 psi | 65% | 2749 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,829 psi | 64% | 2625 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,022 psi | 74% | 2769 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,885 psi | 61% | 2657 fps | 96.3% |
| Hodgdon H4350 | <<locked>> | 80% | 42,714 psi | 66% | 2677 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 52,112 psi | 80% | 2874 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,169 psi | 79% | 2858 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,418 psi | 53% | 2513 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,373 psi | 81% | 2861 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,220 psi | 63% | 2805 fps | 95.4% |
| Hodgdon Superformance | 48.6 gr | 80% | 38,769 psi | 60% | 2664 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 42% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,142 psi | 82% | 2825 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,255 psi | 76% | 2756 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,474 psi | 79% | 2785 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 40,059 psi | 62% | 2608 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,250 psi | 67% | 2657 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 36,564 psi | 56% | 2566 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 51,938 psi | 80% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,531 psi | 78% | 2808 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,835 psi | 77% | 2900 fps | 95.9% |
| Lovex S060 | <<locked>> | 80% | 53,867 psi | 83% | 2792 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,559 psi | 76% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,886 psi | 63% | 2608 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 39,146 psi | 60% | 2589 fps | 96.3% |
| Lovex S071 | <<locked>> | 90% | 33,272 psi | 51% | 2487 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 53,766 psi | 83% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,331 psi | 84% | 2805 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,038 psi | 77% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,279 psi | 65% | 2690 fps | 95% |
| Norma MRP | <<locked>> | 88% | 38,334 psi | 59% | 2700 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,768 psi | 58% | 2605 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,227 psi | 77% | 2822 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,528 psi | 72% | 2851 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,608 psi | 56% | 2592 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 41,234 psi | 63% | 2720 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 43% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,964 psi | 74% | 2749 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,839 psi | 84% | 2936 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,498 psi | 68% | 2802 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,811 psi | 58% | 2631 fps | 98% |
| ReloadSwiss RS 70 | 46.7 gr | 80% | 36,535 psi | 56% | 2635 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,159 psi | 59% | 2723 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 51,329 psi | 79% | 2766 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,005 psi | 69% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,267 psi | 71% | 2740 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,569 psi | 67% | 2743 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 41,829 psi | 64% | 2625 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,886 psi | 63% | 2608 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 49,559 psi | 76% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,146 psi | 60% | 2589 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,079 psi | 71% | 2756 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,505 psi | 82% | 2838 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,549 psi | 84% | 2743 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,195 psi | 71% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,900 psi | 61% | 2549 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,178 psi | 66% | 2736 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 54,273 psi | 83% | 2740 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,194 psi | 70% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,720 psi | 78% | 2789 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,142 psi | 53% | 2562 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,827 psi | 60% | 2612 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 55,129 psi | 85% | 2723 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,648 psi | 79% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,764 psi | 80% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,236 psi | 67% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,247 psi | 60% | 2608 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,596 psi | 62% | 2641 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,937 psi | 77% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,551 psi | 59% | 2605 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,921 psi | 46% | 2451 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 96% | 50,981 psi | 78% | 2940 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,261 psi | 59% | 2575 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,885 psi | 61% | 2657 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,527 psi | 39% | 2398 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,461 psi | 82% | 2844 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,656 psi | 67% | 2707 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 99 powders for 6.5-06 A-Square loaded with the .264 | 128gr | MRR Green Long Range. Norma MRP delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,074 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 56–90 %, 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 | MRR Green Long Range 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.